Never stop thinking.
Microcontrollers
Data Sheet, V1.0, May 2001
C164CM/SM
16-Bit Single-Chip Microcontroller
Edition 2001-05
Published by Infineon Technologies AG,
St.-Martin-Strasse 53,
D-81541 München, Germany
© Infineon Technologies AG 2001.
All Rights Reserved.
Attention please!
The information herein is given to describe certain components and shall not be considered as warranted
characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding
circuits, descriptions and charts stated herein.
Infineon Technologies is an approved CECC manufacturer.
Information
For further information on technology, delivery terms and conditions and prices please contact your nearest
Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide.
Warnings
Due to technical requirements components may contain dangerous substances. For information on the types in
question please contact your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-support devices or systems with the express written
approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure
of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support
devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
Microcontrollers
Data Sheet, V1.0, May 2001
Never stop thinking.
C164CM/SM
16-Bit Single-Chip Microcontroller
Controller Area Network (CAN): License of Robert Bosch GmbH
C164CM
Revision History: 2001-05 V1.0
Previous Version: ---
Page Subjects (major changes since last revision)
We Listen to Your Comments
Any information within this document that you feel is wrong, unclear or missing at all?
Your feedback will help us to continuously improve the quality of this document.
Please send your proposal (including a reference to this document) to:
mcdocu.comments@infineon.com
Data Sheet 1 V1.0, 2001-05
C164CM16-Bit Single-Chip Microcontroller
C166 Family
C164CM, C164SM
• High Performance 16-bit CPU with 4-Stage Pipeline
– 80 ns Instruction Cycle Time at 25 MHz CPU Clock
– 400 ns Multiplication (16 × 16 bit), 800 ns Division (32 / 16 bit)
– Enhanced Boolean Bit Manipulation Facilities
– Additional Instructions to Support HLL and Operating Systems
– Register-Based Design with Multiple Variable Register Banks
– Single-Cycle Context Switching Support
– 16 MBytes Total Linear Address Space for Code and Data
– 1024 Bytes On-Chip Special Function Register Area
• 16-Priority-Level Interrupt System with 32 Sources, Sample-Rate down to 40 ns
• 8-Channel Interrupt-Driven Single-Cycle Data Transfer Facilities via
Peripheral Event Controller (PEC)
• Clock Generation via on-chip PLL (factors 1:1.5/2/2.5/3/4/5),
via prescaler or via direct clock input
• On-Chip Memory Modules
– 2 KBytes On-Chip Internal RAM (IRAM)
– 32 KBytes On-Chip Program Mask ROM or OTP Memory
• On-Chip Peripheral Modules
– 8-Channel 10-bit A/D Converter with Programmable Conversion Time
down to 7.8 µs
– 12-Channel General Purpose Capture/Compare Unit (CAPCOM2)
– Capture/Compare Unit for flexible PWM Signal Generation (CAPCOM6)
(3/6 Capture/Compare Channels and 1 Compare Channel)
– Multi-Functional General Purpose Timer Unit with 3 Timers
– Two Serial Channels (Synchronous/Asynchronous and High-Speed-Synchronous)
– On-Chip CAN Interface (Rev. 2.0B active) with 15 Message Objects
(Full CAN/Basic CAN)
– On-Chip Real Time Clock
• Up to 64 KBytes External Address Space for Code and Data
– Programmable External Bus Characteristics for Different Address Ranges
– Multiplexed External Address/Data Bus with
- 8-Bit Data Bus Width (2 KBytes Address Space, A10 … A0, Serial Interfaces)
- 16-Bit Data Bus Width (64 KBytes Address Space, A15 … A0)
• Idle, Sleep, and Power Down Modes with Flexible Power Management
• Programmable Watchdog Timer and Oscillator Watchdog
• Up to 50 General Purpose I/O Lines
C164CM
C164SM
Data Sheet 2 V1.0, 2001-05
• Supported by a Large Range of Development Tools like C-Compilers,
Macro-Assembler Packages, Emulators, Evaluation Boards, HLL-Debuggers,
Simulators, Logic Analyzer Disassemblers, Programming Boards
• On-Chip Bootstrap Loader
• 64-Pin TQFP Package, 0.5 mm pitch
This document describes several derivatives of the C164 group. Table 1 enumerates
these derivatives and summarizes the differences. As this document refers to all of these
derivatives, some descriptions may not apply to a specific product.
For simplicity all versions are referred to by the term C164CM throughout this document.
Table 1 C164CM Derivative Synopsis
Derivative1)
1) This Data Sheet is valid for ROM(less) devices starting with and including design step AA, and for OTP devices
starting with and including design step AA.
Program
Memory
CAPCOM6 CAN Interf. Operating
Frequency
SAK-C164CM-4RF
SAF-C164CM-4RF
32 KByte ROM Full function CAN1 20 MHz
SAK-C164CM-4R25F
SAF-C164CM-4R25F
32 KByte ROM Full function CAN1 25 MHz
SAK-C164SM-4RF
SAF-C164SM-4RF
32 KByte ROM Full function --- 20 MHz
SAK-C164SM-4R25F
SAF-C164SM-4R25F
32 KByte ROM Full function --- 25 MHz
SAK-C164CM-4EF
SAF-C164CM-4EF
32 KByte OTP Full function CAN1 20 MHz
C164CM
C164SM
Data Sheet 3 V1.0, 2001-05
Ordering Information
The ordering code for Infineon microcontrollers provides an exact reference to the
required product. This ordering code identifies:
• the derivative itself, i.e. its function set, the temperature range, and the supply voltage
• the package and the type of delivery.
For the available ordering codes for the C164CM please refer to the “Product Catalog
Microcontrollers”, which summarizes all available microcontroller variants.
Note: The ordering codes for Mask-ROM versions are defined for each product after
verification of the respective ROM code.
Introduction
The C164CM derivatives of the Infineon C166 Family of full featured single-chip CMOS
microcontrollers are especially suited for cost sensitive applications. They combine high
CPU performance (up to 12.5 million instructions per second) with high peripheral
functionality and enhanced IO-capabilities. They also provide clock generation via PLL
and various on-chip memory modules such as program ROM or OTP, internal RAM, and
extension RAM.
Figure 1 Logic Symbol
MCL04954
V
DD
V
SS
XTAL1
XTAL2
Port 0
16 Bit
Port 1
16 Bit
Port 8
4 Bit
Port 5
8 Bit
RSTIN
NMI
V
AREF
V
AGND
Port 20
6 Bit
C164CM
C164CM
C164SM
Data Sheet 4 V1.0, 2001-05
Pin Configuration
(top view)
Figure 2
*) The marked pins of Port 8 can have CAN interface lines assigned to them. Table 2 on
the pages below lists the possible assignments.
MCP04955
XTAL2
49505152535455565758596061626364
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32313029282726252423222120191817
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
P5.7/AN7/T4IN (TRSEL)
V
SS
P5.6/AN6/T2IN
P5.5/AN5/T4EUD
P5.4/AN4/T2EUD
P5.3/AN3/T3IN
P0.13/AD13/MRST
P0.14/AD14/MTSR
P0.15/AD15/SCLK
VSS
P0.8/AD8
P0.9/AD9
P0.10/AD10
P0.11/AD11/TxD0
P0.12/AD12/RxD0
VDD
VDD
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
NMI
RSTIN
P20.0/RD
P20.1/WR
P20.4/ALE
P20.5/EA/Vpp
V
DD
P20.12/RSTOUT
P1.0/CC60
P1.1/COUT60
P1.2/CC61
P1.3/COUT61
P1.4/CC62
P1.5/COUT62
P1.6/COUT63
P1.7/CTRAP
P1.8/CC6POS0/EX0IN/CC28IO
P1.9/CC6POS1/EX1IN/CC29IO
P1.10/CC6POS2/EX2IN/CC30IO
P1.11/EX3IN/T7IN/CC31IO
VDD
P20.8/CLKOUT/FOUT
VSS
XTAL1
V
SS
P1.12/CC24IO
P1.13/CC25IO
P1.14/CC26IO
P1.15/CC27IO
P8.0/CC16IO/CAN_RxD
P8.1/CC17IO/CAN_TxD
P8.2/CC18IO/CAN_RxD
P8.3/CC19IO/CAN_TxD
P5.0/AN0
P5.1/AN1
P5.2/AN2/T3EUD
V
AGND
V
AREF
C164CM
C164CM
C164SM
Data Sheet 5 V1.0, 2001-05
Table 2 Pin Definitions and Functions
Symbol Pin
No.
Input
Outp.
Function
PORT0
P0H.7
P0H.6
P0H.5
P0H.4
P0H.3
P0H.2
P0H.1
P0H.0
P0L.7
P0L.6
P0L.5
P0L.4
P0L.3
P0L.2
P0L.1
P0L.0
8
9
10
11
12
13
14
15
18
19
20
21
22
23
24
25
IO
(I)/O
I/O
(I)/O
I/O
(I)/O
I/O
(I)/O
I/O
(I)/O
O
(I)/O
(I)/O
(I)/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
PORT0 consists of the two 8-bit bidirectional I/O ports P0L
and P0H. It is bit-wise programmable for input or output via
direction bits. For a pin configured as input, the output driver
is put into high-impedance state.
In case of an external bus configuration, PORT0 serves as
the address (A) and address/data (AD) bus in multiplexed
bus modes.
A(D)15 Most Significant Address(/Data) Line
SCLK SSC Master Clock Output / Slave Clock Input.
A(D)14 Address(/Data) Line
MTSR SSC Master-Transmit/Slave-Receive Outp./Inp.
A(D)13 Address(/Data) Line
MRST SSC Master-Receive/Slave-Transmit Inp./Outp.
A(D)12 Address(/Data) Line
RxD0 ASC0 Data Input (Async.) or Inp./Outp. (Sync.)
A(D)11 Address(/Data) Line
TxD0 ASC0 Clock/Data Output (Async./Sync.)
A(D)10 Address(/Data) Line
A(D)9 Address(/Data) Line
A(D)8 Address(/Data) Line
AD7 Address/Data Line
AD6 Address/Data Line
AD5 Address/Data Line
AD4 Address/Data Line
AD3 Address/Data Line
AD2 Address/Data Line
AD1 Address/Data Line
AD0 Least Significant Address/Data Line
NMI 26 I Non-Maskable Interrupt Input. A high to low transition at this
pin causes the CPU to vector to the NMI trap routine. When
the PWRDN (power down) instruction is executed, the NMI
pin must be low in order to force the C164CM into power
down mode. If NMI is high, when PWRDN is executed, the
part will continue to run in normal mode.
If not used, pin NMI should be pulled high externally.
C164CM
C164SM
Data Sheet 6 V1.0, 2001-05
RSTIN 27 I/O Reset Input with Schmitt-Trigger characteristics. A low level
at this pin while the oscillator is running resets the C164CM.
An internal pullup resistor permits power-on reset using only
a capacitor connected to VSS.
A spike filter suppresses input pulses <10 ns. Input pulses
>100 ns safely pass the filter. The minimum duration for a
safe recognition should be 100 ns + 2 CPU clock cycles.
In bidirectional reset mode (enabled by setting bit BDRSTEN
in register SYSCON) the RSTIN line is internally pulled low
for the duration of the internal reset sequence upon any reset
(HW, SW, WDT). See note below this table.
Note: To let the reset configuration of PORT0 settle and to
let the PLL lock a reset duration of ca. 1 ms is
recommended.
Table 2 Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input
Outp.
Function
C164CM
C164SM
Data Sheet 7 V1.0, 2001-05
P20
P20.0
P20.1
P20.4
P20.5
P20.8
P20.12
28
29
30
31
34
35
IO
O
O
O
I
–
O
O
O
Port 20 is a 6-bit bidirectional I/O port (no P20.5 output driver
in the OTP versions). It is bit-wise programmable for input or
output via direction bits. For a pin configured as input, the
output driver is put into high-impedance state.
The following Port 20 pins also serve for alternate functions:
RD External Memory Read Strobe, activated for
every external instruction or data read access.
WR External Memory Write Strobe, activated for
every external data write access.
ALE Address Latch Enable Output.
Can be used for latching the address into external memory
or an address latch in the multiplexed bus modes.
EA External Access Enable pin.
A low level at this pin during and after Reset forces the
C164CM to latch the configuration from PORT0 and pin RD,
and to begin instruction execution out of external memory.
A high level forces the C164CM to latch the configuration
from pins RD, ALE, and WR, and to begin instruction
execution out of the internal program memory.
“ROMless” versions must have this pin tied to ‘0’.
VPP OTP Programming voltage
The OTP versions of the C164CM receive the programming
voltage via this pin. (No output driver for P20.5 in this case!)
CLKOUT System Clock Output (= CPU Clock),
FOUT Programmable Frequency Output
RSTOUT Internal Reset Indication Output. This pin is set
to a low level when the part is executing either a hardware-,
a software- or a watchdog timer reset. RSTOUT remains low
until the EINIT (end of initialization) instruction is executed.
Table 2 Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input
Outp.
Function
C164CM
C164SM
Data Sheet 8 V1.0, 2001-05
PORT1
P1L.0
P1L.1
P1L.2
P1L.3
P1L.4
P1L.5
P1L.6
P1L.7
P1H.0
P1H.1
P1H.2
P1H.3
P1H.4
P1H.5
P1H.6
P1H.7
36
37
38
39
40
41
42
43
44
45
46
47
52
53
54
55
IO
I/O
O
I/O
O
I/O
O
O
I
I
I
I/O
I
I
I/O
I
I
I/O
I
I
I/O
I/O
I/O
I/O
I/O
PORT1 consists of the two 8-bit bidirectional I/O ports P1L
and P1H. It is bit-wise programmable for input or output via
direction bits. For a pin configured as input, the output driver
is put into high-impedance state.
The following PORT1 pins also serve for alt. functions:
CC60 CAPCOM6: Input / Output of Channel 0
COUT60 CAPCOM6: Output of Channel 0
CC61 CAPCOM6: Input / Output of Channel 1
COUT61 CAPCOM6: Output of Channel 1
CC62 CAPCOM6: Input / Output of Channel 2
COUT62 CAPCOM6: Output of Channel 2
COUT63 Output of 10-bit Compare Channel
CTRAP CAPCOM6: Trap Input
CTRAP is an input pin with an internal pullup resistor. A low
level on this pin switches the CAPCOM6 compare outputs to
the logic level defined by software (if enabled).
CC6POS0 CAPCOM6: Position 0 Input,
EX0IN Fast External Interrupt 0 Input,
CC28IO CAPCOM2: CC28 Capture Inp./Compare Outp.
CC6POS1 CAPCOM6: Position 1 Input,
EX1IN Fast External Interrupt 1 Input,
CC29IO CAPCOM2: CC29 Capture Inp./Compare Outp.
CC6POS2 CAPCOM6: Position 2 Input,
EX2IN Fast External Interrupt 2 Input,
CC30IO CAPCOM2: CC30 Capture Inp./Compare Outp.
EX3IN Fast External Interrupt 3 Input,
T7IN CAPCOM2: Timer T7 Count Input,
CC31IO CAPCOM2: CC31 Capture Inp./Compare Outp.
CC24IO CAPCOM2: CC24 Capture Inp./Compare Outp.
CC25IO CAPCOM2: CC25 Capture Inp./Compare Outp.
CC26IO CAPCOM2: CC26 Capture Inp./Compare Outp.
CC27IO CAPCOM2: CC27 Capture Inp./Compare Outp.
XTAL2
XTAL1
49
50
O
I
XTAL2: Output of the oscillator amplifier circuit.
XTAL1: Input to the oscillator amplifier and input to
the internal clock generator
To clock the device from an external source, drive XTAL1,
while leaving XTAL2 unconnected. Minimum and maximum
high/low and rise/fall times specified in the AC
Characteristics must be observed.
Table 2 Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input
Outp.
Function
C164CM
C164SM
Data Sheet 9 V1.0, 2001-05
P8
P8.0
P8.1
P8.2
P8.3
56
57
58
59
IO
I/O
I
I/O
O
I/O
I
I/O
O
Port 8 is a 4-bit bidirectional I/O port. It is bit-wise
programmable for input or output via direction bits. For a pin
configured as input, the output driver is put into high-
impedance state. Port 8 outputs can be configured as push/
pull or open drain drivers.
The following Port 8 pins also serve for alternate functions:
CC16IO CAPCOM2: CC16 Capture Inp./Compare Outp.,
CAN1_RxD CAN1 Receive Data Input
CC17IO CAPCOM2: CC17 Capture Inp./Compare Outp.,
CAN1_TxD CAN1 Transmit Data Output
CC18IO CAPCOM2: CC18 Capture Inp./Compare Outp.,
CAN1_RxD CAN1 Receive Data Input
CC19IO CAPCOM2: CC19 Capture Inp./Compare Outp.,
CAN1_TxD CAN1 Transmit Data Output
Note: The CAN interface lines are only available in the
C164CM.
P5
P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P5.6
P5.7
62
63
64
1
2
3
4
5
I
I
I
I
I
I
I
I
I
Port 5 is an 8-bit input-only port with Schmitt-Trigger
characteristic.
The pins of Port 5 also serve as analog input channels for the
A/D converter, or they serve as timer inputs:
AN0
AN1
AN2, T3EUD GPT1 Timer T3 Ext. Up/Down Ctrl. Inp.
AN3, T3IN GPT1 Timer T3 Count Input
AN4, T2EUD GPT1 Timer T5 Ext. Up/Down Ctrl. Inp.
AN5, T4EUD GPT1 Timer T4 Ext. Up/Down Ctrl. Inp.
AN6, T2IN GPT1 Timer T2 Count Input
AN7, T4IN GPT1 Timer T4 Count Input
VAGND 60 –Reference ground for the A/D converter.
VAREF 61 –Reference voltage for the A/D converter.
VDD 7, 16,
32, 48
–Digital Supply Voltage:
+5 V during normal operation and idle mode.
≥2.5 V during power down mode.
VSS 6, 17,
33, 51
–Digital Ground.
Table 2 Pin Definitions and Functions (cont’d)
Symbol Pin
No.
Input
Outp.
Function
C164CM
C164SM
Data Sheet 10 V1.0, 2001-05
Note: The following behavior differences must be observed when the bidirectional reset
is active:
•Bit BDRSTEN in register SYSCON cannot be changed after EINIT and is cleared
automatically after a reset.
•The reset indication flags always indicate a long hardware reset.
•The PORT0 configuration is treated as if it were a hardware reset. In particular, the
bootstrap loader may be activated when P0L.4 is low.
•Pin RSTIN may only be connected to external reset devices with an open drain output
driver.
•A short hardware reset is extended to the duration of the internal reset sequence.
C164CM
C164SM
Data Sheet 11 V1.0, 2001-05
Functional Description
The architecture of the C164CM combines advantages of both RISC and CISC
processors and of advanced peripheral subsystems in a very well-balanced way. In
addition the on-chip memory blocks allow the design of compact systems with maximum
performance.
The following block diagram gives an overview of the different on-chip components and
of the advanced, high bandwidth internal bus structure of the C164CM.
Note: All time specifications refer to a CPU clock of 25 MHz
(see definition in the AC Characteristics section).
Figure 3 Block Diagram
The program memory, the internal RAM (IRAM) and the set of generic peripherals are
connected to the CPU via separate buses. A fourth bus, the XBUS, connects external
resources as well as additional on-chip resoures, the X-Peripherals (see Figure 3).
The XBUS resources (CAN) of the C164CM can be enabled or disabled during
initialization by setting the general X-Peripheral enable bit XPEN (SYSCON.2). Modules
that are disabled consume neither address space nor port pins.
C166-Core
CPU
Interrupt Bus
XTAL
MCB04323_4cm
Osc / PLL
RTC WDT
32
16
Interrupt Controller 16-Level
Priority
PEC
External Instr. / Data
GPT1
T2
T3
T4
SSC
BRGen
(SPI)
ASC0
BRGen
(USART)
ADC
10-Bit
8
Channels
CCOM2
T7
T8
CCOM6
T12
T13
EBC
XBUS Control
External Bus
Control
IRAM
Dual Port
Internal
RAM
2 KByte
ProgMem
ROM / OTP
32 KByte
Data
Data
16
16
16
CAN
Rev 2.0B active
Instr. / Data
Port 0
6
16 8
Port 5 Port 1
Port 20
On-Chip XBUS (16-Bit Demux)
Peripheral Data Bus
16
16
Port 8
4
C164CM
C164SM
Data Sheet 12 V1.0, 2001-05
Memory Organization
The memory space of the C164CM is configured in a Von Neumann architecture which
means that code memory, data memory, registers and I/O ports are organized within the
same linear address space which includes 16 MBytes. The entire memory space can be
accessed bytewise or wordwise. Particular portions of the on-chip memory have
additionally been made directly bitaddressable.
The C164CM incorporates 32 KBytes of on-chip OTP memory or on-chip mask-
programmable ROM (not in the ROM-less derivative, of course) for code or constant
data. The on-chip ROM/OTP can be mapped either to segment 0 or segment 1.
The OTP memory can be programmed by the CPU itself (in system, e.g. during booting)
or directly via an external interface (e.g. before assembly). The programming time is
approx. 100 µs per word. An external programming voltage VPP =11.5V must be
supplied for this purpose (via pin EA/VPP).
2 KBytes of on-chip Internal RAM (IRAM) are provided as a storage for user defined
variables, for the system stack, general purpose register banks and even for code. A
register bank can consist of up to 16 wordwide (R0 to R15) and/or bytewide (RL0, RH0,
…, RL7, RH7) so-called General Purpose Registers (GPRs).
1024 bytes (2 × 512 bytes) of the address space are reserved for the Special Function
Register areas (SFR space and ESFR space). SFRs are wordwide registers which are
used for controlling and monitoring functions of the different on-chip units. Unused SFR
addresses are reserved for future members of the C166 Family.
In order to meet the needs of designs where more memory is required than is provided
on chip, up to 64 KBytes of external RAM and/or ROM can be connected to the
microcontroller.
C164CM
C164SM
Data Sheet 13 V1.0, 2001-05
External Bus Controller
All of the external memory accesses are performed by a particular on-chip External Bus
Controller (EBC). It can be programmed either to Single Chip Mode when no external
memory is required, or to one of two different external memory access modes, which are
as follows:
–16-bit Addresses, 16-bit Data, Multiplexed
–11-bit Addresses, 8-bit Data, Multiplexed
Both addresses and data use PORT0 for input/output.
Important timing characteristics of the external bus interface (Memory Cycle Time,
Memory Tri-State Time, Length of ALE and Read Write Delay) have been made
programmable to allow the user the adaption of a wide range of different types of
memories and external peripherals.
In addition, up to 4 independent address windows may be defined (via register pairs
ADDRSELx / BUSCONx) which control the access to different resources with different
bus characteristics. These address windows are arranged hierarchically where
BUSCON4 overrides BUSCON3 and BUSCON2 overrides BUSCON1. All accesses to
locations not covered by these 4 address windows are controlled by BUSCON0.
Note: The programmable bus features and the window mechanism are standard
features of the C166 architecture. Due to the C164CM’s limited external address
space, however, they can be utilized only to a small extend.
The C164CM will preferably be used in single-chip mode. Applications which require
access to external resources such as peripherals or small memories, will use the 8-bit
data bus with 11-bit address bus in most cases. In this case the upper pins of PORT0
can be used for the serial interfaces. If a wider address or a 16-bit data bus is required
the serial interfaces cannot be used.
C164CM
C164SM
Data Sheet 14 V1.0, 2001-05
Central Processing Unit (CPU)
The main core of the CPU consists of a 4-stage instruction pipeline, a 16-bit arithmetic
and logic unit (ALU) and dedicated SFRs. Additional hardware has been spent for a
separate multiply and divide unit, a bit-mask generator and a barrel shifter.
Based on these hardware provisions, most of the C164CM’s instructions can be
executed in just one machine cycle which requires 2 CPU clocks (4 TCL). For example,
shift and rotate instructions are always processed during one machine cycle
independent of the number of bits to be shifted. All multiple-cycle instructions have been
optimized so that they can be executed very fast as well: branches in 2 cycles, a
16 ×16 bit multiplication in 5 cycles and a 32-/16-bit division in 10 cycles. Another
pipeline optimization, the so-called ‘Jump Cache’, reduces the execution time of
repeatedly performed jumps in a loop from 2 cycles to 1 cycle.
Figure 4 CPU Block Diagram
MCB02147
CPU
SP
STKOV
STKUN
Instr. Reg.
Instr. Ptr.
Exec. Unit
4-Stage
Pipeline
MDH
MDL
PSW
SYSCON Context Ptr.
Mul/Div-HW
R15
R0
General
Purpose
Registers
Bit-Mask Gen
Barrel - Shifter
ALU
(16-bit)
Data Page Ptr. Code Seg. Ptr.
Internal
RAM
R15
R0
ROM
16
16
32
BUSCON 0
BUSCON 1
BUSCON 2
BUSCON 3
BUSCON 4 ADDRSEL 4
ADDRSEL 3
ADDRSEL 2
ADDRSEL 1
C164CM
C164SM
Data Sheet 15 V1.0, 2001-05
The CPU has a register context consisting of up to 16 wordwide GPRs at its disposal.
These 16 GPRs are physically allocated within the on-chip RAM area. A Context Pointer
(CP) register determines the base address of the active register bank to be accessed by
the CPU at any time. The number of register banks is only restricted by the available
internal RAM space. For easy parameter passing, a register bank may overlap others.
A system stack of up to 1024 words is provided as a storage for temporary data. The
system stack is allocated in the on-chip RAM area, and it is accessed by the CPU via the
stack pointer (SP) register. Two separate SFRs, STKOV and STKUN, are implicitly
compared against the stack pointer value upon each stack access for the detection of a
stack overflow or underflow.
The high performance offered by the hardware implementation of the CPU can efficiently
be utilized by a programmer via the highly efficient C164CM instruction set which
includes the following instruction classes:
–Arithmetic Instructions
–Logical Instructions
–Boolean Bit Manipulation Instructions
–Compare and Loop Control Instructions
–Shift and Rotate Instructions
–Prioritize Instruction
–Data Movement Instructions
–System Stack Instructions
–Jump and Call Instructions
–Return Instructions
–System Control Instructions
–Miscellaneous Instructions
The basic instruction length is either 2 or 4 bytes. Possible operand types are bits, bytes
and words. A variety of direct, indirect or immediate addressing modes are provided to
specify the required operands.
C164CM
C164SM
Data Sheet 16 V1.0, 2001-05
Interrupt System
With an interrupt response time within a range from just 5 to 12 CPU clocks (in case of
internal program execution), the C164CM is capable of reacting very fast to the
occurrence of non-deterministic events.
The architecture of the C164CM supports several mechanisms for fast and flexible
response to service requests that can be generated from various sources internal or
external to the microcontroller. Any of these interrupt requests can be programmed to
being serviced by the Interrupt Controller or by the Peripheral Event Controller (PEC).
In contrast to a standard interrupt service where the current program execution is
suspended and a branch to the interrupt vector table is performed, just one cycle is
‘stolen’ from the current CPU activity to perform a PEC service. A PEC service implies a
single byte or word data transfer between any two memory locations with an additional
increment of either the PEC source or the destination pointer. An individual PEC transfer
counter is implicity decremented for each PEC service except when performing in the
continuous transfer mode. When this counter reaches zero, a standard interrupt is
performed to the corresponding source related vector location. PEC services are very
well suited, for example, for supporting the transmission or reception of blocks of data.
The C164CM has 8 PEC channels each of which offers such fast interrupt-driven data
transfer capabilities.
A separate control register which contains an interrupt request flag, an interrupt enable
flag and an interrupt priority bitfield exists for each of the possible interrupt sources. Via
its related register, each source can be programmed to one of sixteen interrupt priority
levels. Once having been accepted by the CPU, an interrupt service can only be
interrupted by a higher prioritized service request. For the standard interrupt processing,
each of the possible interrupt sources has a dedicated vector location.
Fast external interrupt inputs are provided to service external interrupts with high
precision requirements. These fast interrupt inputs feature programmable edge
detection (rising edge, falling edge or both edges).
Software interrupts are supported by means of the ‘TRAP’ instruction in combination with
an individual trap (interrupt) number.
Table 3 shows all of the possible C164CM interrupt sources and the corresponding
hardware-related interrupt flags, vectors, vector locations and trap (interrupt) numbers.
Note: Interrupt nodes which are not used by associated peripherals, may be used to
generate software controlled interrupt requests by setting the respective interrupt
request bit (xIR).
C164CM
C164SM
Data Sheet 17 V1.0, 2001-05
Table 3 C164CM Interrupt Nodes
Source of Interrupt or
PEC Service Request
Request
Flag
Enable
Flag
Interrupt
Vector
Vector
Location
Trap
Number
Fast External Interrupt 0 CC8IR CC8IE CC8INT 00’0060H18H
Fast External Interrupt 1 CC9IR CC9IE CC9INT 00’0064H19H
Fast External Interrupt 2 CC10IR CC10IE CC10INT 00’0068H1AH
Fast External Interrupt 3 CC11IR CC11IE CC11INT 00’006CH1BH
GPT1 Timer 2 T2IR T2IE T2INT 00’0088H22H
GPT1 Timer 3 T3IR T3IE T3INT 00’008CH23H
GPT1 Timer 4 T4IR T4IE T4INT 00’0090H24H
A/D Conversion
Complete
ADCIR ADCIE ADCINT 00’00A0H28H
A/D Overrun Error ADEIR ADEIE ADEINT 00’00A4H29H
ASC0 Transmit S0TIR S0TIE S0TINT 00’00A8H2AH
ASC0 Transmit Buffer S0TBIR S0TBIE S0TBINT 00’011CH47H
ASC0 Receive S0RIR S0RIE S0RINT 00’00ACH2BH
ASC0 Error S0EIR S0EIE S0EINT 00’00B0H2CH
SSC Transmit SCTIR SCTIE SCTINT 00’00B4H2DH
SSC Receive SCRIR SCRIE SCRINT 00’00B8H2EH
SSC Error SCEIR SCEIE SCEINT 00’00BCH2FH
CAPCOM Register 16 CC16IR CC16IE CC16INT 00’00C0H30H
CAPCOM Register 17 CC17IR CC17IE CC17INT 00’00C4H31H
CAPCOM Register 18 CC18IR CC18IE CC18INT 00’00C8H32H
CAPCOM Register 19 CC19IR CC19IE CC19INT 00’00CCH33H
CAPCOM Register 24 CC24IR CC24IE CC24INT 00’00E0H38H
CAPCOM Register 25 CC25IR CC25IE CC25INT 00’00E4H39H
CAPCOM Register 26 CC26IR CC26IE CC26INT 00’00E8H3AH
CAPCOM Register 27 CC27IR CC27IE CC27INT 00’00ECH3BH
CAPCOM Timer 7 T7IR T7IE T7INT 00’00F4H3DH
CAPCOM Timer 8 T8IR T8IE T8INT 00’00F8H3EH
CAPCOM6 Interrupt CC6IR CC6IE CC6INT 00’00FCH3FH
CAN Interface 1 XP0IR XP0IE XP0INT 00’0100H40H
PLL/OWD and RTC XP3IR XP3IE XP3INT 00’010CH43H
C164CM
C164SM
Data Sheet 18 V1.0, 2001-05
CAPCOM 6 Timer 12 T12IR T12IE T12INT 00’0134H4DH
CAPCOM 6 Timer 13 T13IR T13IE T13INT 00’0138H4EH
CAPCOM 6 Emergency CC6EIR CC6EIE CC6EINT 00’013CH4FH
Table 3 C164CM Interrupt Nodes (cont’d)
Source of Interrupt or
PEC Service Request
Request
Flag
Enable
Flag
Interrupt
Vector
Vector
Location
Trap
Number
C164CM
C164SM
Data Sheet 19 V1.0, 2001-05
The C164CM also provides an excellent mechanism to identify and to process
exceptions or error conditions that arise during run-time, so-called ‘Hardware Traps’.
Hardware traps cause immediate non-maskable system reaction which is similar to a
standard interrupt service (branching to a dedicated vector table location). The
occurrence of a hardware trap is additionally signified by an individual bit in the trap flag
register (TFR). Except when another higher prioritized trap service is in progress, a
hardware trap will interrupt any actual program execution. In turn, hardware trap services
can normally not be interrupted by standard or PEC interrupts.
Table 4 shows all of the possible exceptions or error conditions that can arise during run-
time:
Table 4 Hardware Trap Summary
Exception Condition Trap
Flag
Trap
Vector
Vector
Location
Trap
Number
Trap
Priority
Reset Functions:
–Hardware Reset
–Software Reset
–W-dog Timer Overflow
–
RESET
RESET
RESET
00’0000H
00’0000H
00’0000H
00H
00H
00H
III
III
III
Class A Hardware Traps:
–Non-Maskable Interrupt
–Stack Overflow
–Stack Underflow
NMI
STKOF
STKUF
NMITRAP
STOTRAP
STUTRAP
00’0008H
00’0010H
00’0018H
02H
04H
06H
II
II
II
Class B Hardware Traps:
–Undefined Opcode
–Protected Instruction
Fault
–Illegal Word Operand
Access
–Illegal Instruction
Access
–Illegal External Bus
Access
UNDOPC
PRTFLT
ILLOPA
ILLINA
ILLBUS
BTRAP
BTRAP
BTRAP
BTRAP
BTRAP
00’0028H
00’0028H
00’0028H
00’0028H
00’0028H
0AH
0AH
0AH
0AH
0AH
I
I
I
I
I
Reserved –– [2CH –
3CH]
[0BH –
0FH]
–
Software Traps
–TRAP Instruction
–– Any
[00’0000H –
00’01FCH]
in steps
of 4H
Any
[00H –
7FH]
Current
CPU
Priority
C164CM
C164SM
Data Sheet 20 V1.0, 2001-05
The Capture/Compare Unit CAPCOM2
The general purpose CAPCOM2 unit supports generation and control of timing
sequences on up to 12 channels with a maximum resolution of 16 TCL. The CAPCOM
units are typically used to handle high speed I/O tasks such as pulse and waveform
generation, pulse width modulation (PMW), Digital to Analog (D/A) conversion, software
timing, or time recording relative to external events.
Two 16-bit timers (T7/T8) with reload registers provide two independent time bases for
the capture/compare register array.
Each dual purpose capture/compare register, which may be individually allocated to
either CAPCOM timer and programmed for capture or compare function, has one port
pin associated with it which serves as an input pin for triggering the capture function, or
as an output pin to indicate the occurrence of a compare event.
When a capture/compare register has been selected for capture mode, the current
contents of the allocated timer will be latched (‘capture’d) into the capture/compare
register in response to an external event at the port pin which is associated with this
register. In addition, a specific interrupt request for this capture/compare register is
generated. Either a positive, a negative, or both a positive and a negative external signal
transition at the pin can be selected as the triggering event. The contents of all registers
which have been selected for one of the five compare modes are continuously compared
with the contents of the allocated timers. When a match occurs between the timer value
and the value in a capture/compare register, specific actions will be taken based on the
selected compare mode.
Table 5 Compare Modes (CAPCOM)
Compare Modes Function
Mode 0 Interrupt-only compare mode;
several compare interrupts per timer period are possible
Mode 1 Pin toggles on each compare match;
several compare events per timer period are possible
Mode 2 Interrupt-only compare mode;
only one compare interrupt per timer period is generated
Mode 3 Pin set ‘1’ on match; pin reset ‘0’ on compare time overflow;
only one compare event per timer period is generated
Double
Register Mode
Two registers operate on one pin; pin toggles on each compare
match;
several compare events per timer period are possible.
Registers CC16 & CC24 ➞ pin CC16IO
Registers CC17 & CC25 ➞ pin CC17IO
Registers CC18 & CC26 ➞ pin CC18IO
Registers CC19 & CC27 ➞ pin CC19IO
C164CM
C164SM
Data Sheet 21 V1.0, 2001-05
The Capture/Compare Unit CAPCOM6
The CAPCOM6 unit supports generation and control of timing sequences on up to three
16-bit capture/compare channels plus one 10-bit compare channel.
In compare mode the CAPCOM6 unit provides two output signals per channel which
have inverted polarity and non-overlapping pulse transitions. The compare channel can
generate a single PWM output signal and is further used to modulate the capture/
compare output signals.
In capture mode the contents of compare timer 12 is stored in the capture registers upon
a signal transition at pins CCx.
Compare timers T12 (16-bit) and T13 (10-bit) are free running timers which are clocked
by the prescaled CPU clock.
Figure 5 CAPCOM6 Block Diagram
For motor control applications both subunits may generate versatile multichannel PWM
signals which are basically either controlled by compare timer 12 or by a typical hall
sensor pattern at the interrupt inputs (block commutation).
Control
CC Channel 0
CC60
CC Channel 1
CC61
CC Channel 2
CC62
MCB04109
Prescaler
Offset Register
T12OF
Compare
Timer T12
16-Bit
Period Register
T12P
Mode
Select Register
CC6MSEL
Trap Register
Port
Control
Logic
Control Register
CTCON
Compare Register
CMP13
Prescaler
Compare
Timer T13
10-Bit
Period Register
T13P
Block
Commutation
Control
CC6MCON.H
CC60
COUT60
CC61
COUT61
CC62
COUT62
CTRAP
CC6POS0
CC6POS1
CC6POS2
fCPU
fCPU COUT63
The timer registers (T12, T13) are not directly accessible.
The period and offset registers are loading a value into the timer registers.
C164CM
C164SM
Data Sheet 22 V1.0, 2001-05
General Purpose Timer (GPT) Unit
The GPT unit represents a very flexible multifunctional timer/counter structure which
may be used for many different time related tasks such as event timing and counting,
pulse width and duty cycle measurements, pulse generation, or pulse multiplication.
The GPT unit incorporates three 16-bit timers. Each timer may operate independently in
a number of different modes, or may be concatenated with another timer.
Each of the three timers T2, T3, T4 of module GPT1 can be configured individually for
one of four basic modes of operation, which are Timer, Gated Timer, Counter, and
Incremental Interface Mode. In Timer Mode, the input clock for a timer is derived from
the CPU clock, divided by a programmable prescaler, while Counter Mode allows a timer
to be clocked in reference to external events.
Pulse width or duty cycle measurement is supported in Gated Timer Mode, where the
operation of a timer is controlled by the ‘gate’ level on an external input pin. For these
purposes, each timer has one associated port pin (TxIN) which serves as gate or clock
input. The maximum resolution of the timers in module GPT1 is 16 TCL.
The count direction (up/down) for each timer is programmable by software or may
additionally be altered dynamically by an external signal on a port pin (TxEUD) to
facilitate e.g. position tracking.
In Incremental Interface Mode the GPT1 timers (T2, T3, T4) can be directly connected
to the incremental position sensor signals A and B via their respective inputs TxIN and
TxEUD. Direction and count signals are internally derived from these two input signals,
so the contents of the respective timer Tx corresponds to the sensor position. The third
position sensor signal TOP0 can be connected to an interrupt input.
Timer T3 has an output toggle latch (T3OTL) which changes its state on each timer over-
flow/underflow. The state of this latch may be used internally to clock timers T2 and T4
for measuring long time periods with high resolution.
In addition to their basic operating modes, timers T2 and T4 may be configured as reload
or capture registers for timer T3. When used as capture or reload registers, timers T2
and T4 are stopped. The contents of timer T3 is captured into T2 or T4 in response to a
signal at their associated input pins (TxIN). Timer T3 is reloaded with the contents of T2
or T4 triggered either by an external signal or by a selectable state transition of its toggle
latch T3OTL.
C164CM
C164SM
Data Sheet 23 V1.0, 2001-05
Figure 6 Block Diagram of GPT1
T3
Mode
Control
2
n
: 1f
CPU
2
n
: 1f
CPU
T2
Mode
Control
GPT1 Timer T2
Reload
Capture
2
n
: 1f
CPU
T4
Mode
Control GPT1 Timer T4
Reload
Capture
GPT1 Timer T3 T3OTL
U/D
T2EUD
T2IN
T3IN
T3EUD
T4IN
T4EUD
Toggle FF
U/D
U/D
Interrupt
Request
(T2IR)
Interrupt
Request
(T3IR)
Interrupt
Request
(T4IR)
Other
Timers
Mct04825_4.vsd
n = 3 … 10
C164CM
C164SM
Data Sheet 24 V1.0, 2001-05
Real Time Clock
The Real Time Clock (RTC) module of the C164CM consists of a chain of 3 divider
blocks, a fixed 8:1 divider, the reloadable 16-bit timer T14, and the 32-bit RTC timer
(accessible via registers RTCH and RTCL). The RTC module is directly clocked with the
on-chip oscillator frequency divided by 32 via a separate clock driver (fRTC = fOSC/32)
and is therefore independent from the selected clock generation mode of the C164CM.
All timers count up.
The RTC module can be used for different purposes:
•System clock to determine the current time and date
•Cyclic time based interrupt
•48-bit timer for long term measurements
Figure 7 RTC Block Diagram
Note: The registers associated with the RTC are not affected by a reset in order to
maintain the correct system time even when intermediate resets are executed.
MCD04432
T14REL
T14 8:1
RTC
f
RTCLRTCH
Interrupt
Request
Reload
C164CM
C164SM
Data Sheet 25 V1.0, 2001-05
A/D Converter
For analog signal measurement, a 10-bit A/D converter with 8 multiplexed input channels
and a sample and hold circuit has been integrated on-chip. It uses the method of
successive approximation. The sample time (for loading the capacitors) and the
conversion time is programmable and can so be adjusted to the external circuitry.
Overrun error detection/protection is provided for the conversion result register
(ADDAT): either an interrupt request will be generated when the result of a previous
conversion has not been read from the result register at the time the next conversion is
complete, or the next conversion is suspended in such a case until the previous result
has been read.
For applications which require less than 8 analog input channels, the remaining channel
inputs can be used as digital input port pins.
The A/D converter of the C164CM supports four different conversion modes. In the
standard Single Channel conversion mode, the analog level on a specified channel is
sampled once and converted to a digital result. In the Single Channel Continuous mode,
the analog level on a specified channel is repeatedly sampled and converted without
software intervention. In the Auto Scan mode, the analog levels on a prespecified
number of channels (standard or extension) are sequentially sampled and converted. In
the Auto Scan Continuous mode, the number of prespecified channels is repeatedly
sampled and converted. In addition, the conversion of a specific channel can be inserted
(injected) into a running sequence without disturbing this sequence. This is called
Channel Injection Mode.
The Peripheral Event Controller (PEC) may be used to automatically store the
conversion results into a table in memory for later evaluation, without requiring the
overhead of entering and exiting interrupt routines for each data transfer.
After each reset and also during normal operation the ADC automatically performs
calibration cycles. This automatic self-calibration constantly adjusts the converter to
changing operating conditions (e.g. temperature) and compensates process variations.
These calibration cycles are part of the conversion cycle, so they do not affect the normal
operation of the A/D converter.
In order to decouple analog inputs from digital noise and to avoid input trigger noise
those pins used for analog input can be disconnected from the digital IO or input stages
under software control. This can be selected for each pin separately via register P5DIDIS
(Port 5 Digital Input Disable).
C164CM
C164SM
Data Sheet 26 V1.0, 2001-05
Serial Channels
Serial communication with other microcontrollers, processors, terminals or external
peripheral components is provided by two serial interfaces with different functionality, an
Asynchronous/Synchronous Serial Channel (ASC0) and a High-Speed Synchronous
Serial Channel (SSC).
The ASC0 is upward compatible with the serial ports of the Infineon 8-bit microcontroller
families and supports full-duplex asynchronous communication at up to 781 Kbit/s and
half-duplex synchronous communication at up to 3.1 Mbit/s (@ 25 MHz CPU clock).
A dedicated baud rate generator allows to set up all standard baud rates without
oscillator tuning. For transmission, reception and error handling 4 separate interrupt
vectors are provided. In asynchronous mode, 8- or 9-bit data frames are transmitted or
received, preceded by a start bit and terminated by one or two stop bits. For
multiprocessor communication, a mechanism to distinguish address from data bytes has
been included (8-bit data plus wake up bit mode).
In synchronous mode, the ASC0 transmits or receives bytes (8 bits) synchronously to a
shift clock which is generated by the ASC0. The ASC0 always shifts the LSB first. A loop
back option is available for testing purposes.
A number of optional hardware error detection capabilities has been included to increase
the reliability of data transfers. A parity bit can automatically be generated on
transmission or be checked on reception. Framing error detection allows to recognize
data frames with missing stop bits. An overrun error will be generated, if the last
character received has not been read out of the receive buffer register at the time the
reception of a new character is complete.
The SSC supports full-duplex synchronous communication at up to 6.25 Mbit/s
(@ 25 MHz CPU clock). It may be configured so it interfaces with serially linked
peripheral components. A dedicated baud rate generator allows to set up all standard
baud rates without oscillator tuning. For transmission, reception and error handling
3 separate interrupt vectors are provided.
The SSC transmits or receives characters of 2 …16 bits length synchronously to a shift
clock which can be generated by the SSC (master mode) or by an external master (slave
mode). The SSC can start shifting with the LSB or with the MSB and allows the selection
of shifting and latching clock edges as well as the clock polarity.
A number of optional hardware error detection capabilities has been included to increase
the reliability of data transfers. Transmit and receive error supervise the correct handling
of the data buffer. Phase and baudrate error detect incorrect serial data.
C164CM
C164SM
Data Sheet 27 V1.0, 2001-05
CAN-Module
The integrated CAN-Module handles the completely autonomous transmission and
reception of CAN frames in accordance with the CAN specification V2.0 part B (active),
i.e. the on-chip CAN-Modules can receive and transmit standard frames with 11-bit
identifiers as well as extended frames with 29-bit identifiers.
The module provides Full CAN functionality on up to 15 message objects. Message
object 15 may be configured for Basic CAN functionality. Both modes provide separate
masks for acceptance filtering which allows to accept a number of identifiers in Full CAN
mode and also allows to disregard a number of identifiers in Basic CAN mode. All
message objects can be updated independent from the other objects and are equipped
for the maximum message length of 8 bytes.
The bit timing is derived from the XCLK and is programmable up to a data rate of 1 Mbit/
s. Each CAN-Module uses two pins of Port 4 or Port 8 to interface to an external bus
transceiver. The interface pins are assigned via software.
Note: When the CAN interface is assigned to Port 8, the respective CAPCOM IO lines
on Port 8 cannot be used.
Watchdog Timer
The Watchdog Timer represents one of the fail-safe mechanisms which have been
implemented to prevent the controller from malfunctioning for longer periods of time.
The Watchdog Timer is always enabled after a reset of the chip, and can only be
disabled in the time interval until the EINIT (end of initialization) instruction has been
executed. Thus, the chip’s start-up procedure is always monitored. The software has to
be designed to service the Watchdog Timer before it overflows. If, due to hardware or
software related failures, the software fails to do so, the Watchdog Timer overflows and
generates an internal hardware reset and pulls the RSTOUT pin low in order to allow
external hardware components to be reset.
The Watchdog Timer is a 16-bit timer, clocked with the system clock divided by 2/4/128/
256. The high byte of the Watchdog Timer register can be set to a prespecified reload
value (stored in WDTREL) in order to allow further variation of the monitored time
interval. Each time it is serviced by the application software, the high byte of the
Watchdog Timer is reloaded. Thus, time intervals between 20 µs and 336 ms can be
monitored (@ 25 MHz).
The default Watchdog Timer interval after reset is 5.24 ms (@ 25 MHz).
C164CM
C164SM
Data Sheet 28 V1.0, 2001-05
Parallel Ports
The C164CM provides up to 50 I/O lines which are organized into four input/output ports
and one input port. All port lines are bit-addressable, and all input/output lines are
individually (bit-wise) programmable as inputs or outputs via direction registers. The I/O
ports are true bidirectional ports which are switched to high impedance state when
configured as inputs. The output drivers of Port 8 can be configured (pin by pin) for push/
pull operation or open-drain operation via a control register. During the internal reset, all
port pins are configured as inputs.
All port lines have programmable alternate input or output functions associated with
them. All port lines that are not used for these alternate functions may be used as general
purpose IO lines.
PORT0 may be used as address and data lines when accessing external memory. Also
the serial interfaces ASC0 and SSC use the upper pins of P0H.
Ports P1L, P1H, and P8 are associated with the capture inputs or compare outputs of
the CAPCOM units and/or serve as external interrupt inputs.
Port 5 is used for the analog input channels to the A/D converter or timer control signals.
Port 20 includes the bus control signals RD, WR, ALE, the configuration input EA, the
the system control output RSTOUT, and the system clock output CLKOUT (or the
programmable frequency output FOUT).
The edge characteristics (transition time) and driver characteristics (output current) of
the C164CM’s port drivers can be selected via the Port Output Control registers
(POCONx).
C164CM
C164SM
Data Sheet 29 V1.0, 2001-05
Oscillator Watchdog
The Oscillator Watchdog (OWD) monitors the clock signal generated by the on-chip
oscillator (either with a crystal or via external clock drive). For this operation the PLL
provides a clock signal which is used to supervise transitions on the oscillator clock. This
PLL clock is independent from the XTAL1 clock. When the expected oscillator clock
transitions are missing the OWD activates the PLL Unlock/OWD interrupt node and
supplies the CPU with the PLL clock signal. Under these circumstances the PLL will
oscillate with its basic frequency.
In direct drive mode the PLL base frequency is used directly (fCPU = 2 …5 MHz).
In prescaler mode the PLL base frequency is divided by 2 (fCPU = 1 …2.5 MHz).
Note: The CPU clock source is only switched back to the oscillator clock after a
hardware reset.
The oscillator watchdog can be disabled by setting bit OWDDIS in register SYSCON.
In this case (OWDDIS = ‘1’) the PLL remains idle and provides no clock signal, while the
CPU clock signal is derived directly from the oscillator clock or via prescaler or SDD. Also
no interrupt request will be generated in case of a missing oscillator clock.
Note: At the end of a reset bit OWDDIS reflects the inverted level of pin RD at that time.
Thus the oscillator watchdog may also be disabled via hardware by (externally)
pulling the RD line low upon a reset, similar to the standard reset configuration via
PORT0.
C164CM
C164SM
Data Sheet 30 V1.0, 2001-05
Power Management
The C164CM provides several means to control the power it consumes either at a given
time or averaged over a certain timespan. Three mechanisms can be used (partly in
parallel):
•Power Saving Modes switch the C164CM into a special operating mode (control via
instructions).
Idle Mode stops the CPU while the peripherals can continue to operate.
Sleep Mode and Power Down Mode stop all clock signals and all operation (RTC may
optionally continue running). Sleep Mode can be terminated by external interrupt
signals.
•Clock Generation Management controls the distribution and the frequency of
internal and external clock signals (control via register SYSCON2).
Slow Down Mode lets the C164CM run at a CPU clock frequency of fOSC/1 …32 (half
for prescaler operation) which drastically reduces the consumed power. The PLL can
be optionally disabled while operating in Slow Down Mode.
External circuitry can be controlled via the programmable frequency output FOUT.
•Peripheral Management permits temporary disabling of peripheral modules (control
via register SYSCON3).
Each peripheral can separately be disabled/enabled. A group control option disables
a major part of the peripheral set by setting one single bit.
The on-chip RTC supports intermittend operation of the C164CM by generating cyclic
wakeup signals. This offers full performance to quickly react on action requests while the
intermittend sleep phases greatly reduce the average power consumption of the system.
C164CM
C164SM
Data Sheet 31 V1.0, 2001-05
Instruction Set Summary
Table 6 lists the instructions of the C164CM in a condensed way.
The various addressing modes that can be used with a specific instruction, the operation
of the instructions, parameters for conditional execution of instructions, and the opcodes
for each instruction can be found in the “C166 Family Instruction Set Manual”.
This document also provides a detailed description of each instruction.
Table 6 Instruction Set Summary
Mnemonic Description Bytes
ADD(B) Add word (byte) operands 2 / 4
ADDC(B) Add word (byte) operands with Carry 2 / 4
SUB(B) Subtract word (byte) operands 2 / 4
SUBC(B) Subtract word (byte) operands with Carry 2 / 4
MUL(U) (Un)Signed multiply direct GPR by direct GPR (16-16-bit) 2
DIV(U) (Un)Signed divide register MDL by direct GPR (16-/16-bit) 2
DIVL(U) (Un)Signed long divide reg. MD by direct GPR (32-/16-bit) 2
CPL(B) Complement direct word (byte) GPR 2
NEG(B) Negate direct word (byte) GPR 2
AND(B) Bitwise AND, (word/byte operands) 2 / 4
OR(B) Bitwise OR, (word/byte operands) 2 / 4
XOR(B) Bitwise XOR, (word/byte operands) 2 / 4
BCLR Clear direct bit 2
BSET Set direct bit 2
BMOV(N) Move (negated) direct bit to direct bit 4
BAND, BOR,
BXOR
AND/OR/XOR direct bit with direct bit 4
BCMP Compare direct bit to direct bit 4
BFLDH/L Bitwise modify masked high/low byte of bit-addressable
direct word memory with immediate data
4
CMP(B) Compare word (byte) operands 2 / 4
CMPD1/2 Compare word data to GPR and decrement GPR by 1/2 2 / 4
CMPI1/2 Compare word data to GPR and increment GPR by 1/2 2 / 4
PRIOR Determine number of shift cycles to normalize direct
word GPR and store result in direct word GPR
2
SHL / SHR Shift left/right direct word GPR 2
ROL / ROR Rotate left/right direct word GPR 2
ASHR Arithmetic (sign bit) shift right direct word GPR 2
C164CM
C164SM
Data Sheet 32 V1.0, 2001-05
MOV(B) Move word (byte) data 2 / 4
MOVBS Move byte operand to word operand with sign extension 2 / 4
MOVBZ Move byte operand to word operand with zero extension 2 / 4
JMPA, JMPI,
JMPR
Jump absolute/indirect/relative if condition is met 4
JMPS Jump absolute to a code segment 4
J(N)B Jump relative if direct bit is (not) set 4
JBC Jump relative and clear bit if direct bit is set 4
JNBS Jump relative and set bit if direct bit is not set 4
CALLA, CALLI,
CALLR
Call absolute/indirect/relative subroutine if condition is met 4
CALLS Call absolute subroutine in any code segment 4
PCALL Push direct word register onto system stack and call
absolute subroutine
4
TRAP Call interrupt service routine via immediate trap number 2
PUSH, POP Push/pop direct word register onto/from system stack 2
SCXT Push direct word register onto system stack and update
register with word operand
4
RET Return from intra-segment subroutine 2
RETS Return from inter-segment subroutine 2
RETP Return from intra-segment subroutine and pop direct
word register from system stack
2
RETI Return from interrupt service subroutine 2
SRST Software Reset 4
IDLE Enter Idle Mode 4
PWRDN Enter Power Down Mode (supposes NMI-pin being low) 4
SRVWDT Service Watchdog Timer 4
DISWDT Disable Watchdog Timer 4
EINIT Signify End-of-Initialization on RSTOUT-pin 4
ATOMIC Begin ATOMIC sequence 2
EXTR Begin EXTended Register sequence 2
EXTP(R) Begin EXTended Page (and Register) sequence 2 / 4
EXTS(R) Begin EXTended Segment (and Register) sequence 2 / 4
NOP Null operation 2
Table 6 Instruction Set Summary (cont’d)
Mnemonic Description Bytes
C164CM
C164SM
Data Sheet 33 V1.0, 2001-05
Special Function Registers Overview
Table 7 lists all SFRs which are implemented in the C164CM in alphabetical order.
Bit-addressable SFRs are marked with the letter “b” in column “Name”. SFRs within the
Extended SFR-Space (ESFRs) are marked with the letter “E” in column “Physical
Address”. Registers within on-chip X-peripherals are marked with the letter “X” in column
“Physical Address”.
An SFR can be specified via its individual mnemonic name. Depending on the selected
addressing mode, an SFR can be accessed via its physical address (using the Data
Page Pointers), or via its short 8-bit address (without using the Data Page Pointers).
Table 7 C164CM Registers, Ordered by Name
Name Physical
Address
8-Bit
Addr.
Description Reset
Value
ADCIC b FF98HCCHA/D Converter End of Conversion
Interrupt Control Register
0000H
ADCON b FFA0HD0HA/D Converter Control Register 0000H
ADDAT FEA0H50HA/D Converter Result Register 0000H
ADDAT2 F0A0HE50HA/D Converter 2 Result Register 0000H
ADDRSEL1 FE18H0CHAddress Select Register 1 0000H
ADDRSEL2 FE1AH0DHAddress Select Register 2 0000H
ADDRSEL3 FE1CH0EHAddress Select Register 3 0000H
ADDRSEL4 FE1EH0FHAddress Select Register 4 0000H
ADEIC b FF9AHCDHA/D Converter Overrun Error Interrupt
Control Register
0000H
BUSCON0 b FF0CH86HBus Configuration Register 0 0000H
BUSCON1 b FF14H8AHBus Configuration Register 1 0000H
BUSCON2 b FF16H8BHBus Configuration Register 2 0000H
BUSCON3 b FF18H8CHBus Configuration Register 3 0000H
BUSCON4 b FF1AH8DHBus Configuration Register 4 0000H
C1BTR EF04HX--- CAN1 Bit Timing Register UUUUH
C1CSR EF00HX--- CAN1 Control / Status Register XX01H
C1GMS EF06HX--- CAN1 Global Mask Short UFUUH
C1LARn EFn4HX--- CAN Lower Arbitration Register (msg. n) UUUUH
C1LGML EF0AHX--- CAN Lower Global Mask Long UUUUH
C1LMLM EF0EHX--- CAN Lower Mask of Last Message UUUUH
C164CM
C164SM
Data Sheet 34 V1.0, 2001-05
C1MCFGn EFn6HX--- CAN Message Configuration Register
(msg. n)
UUH
C1MCRn EFn0HX--- CAN Message Control Register (msg. n) UUUUH
C1PCIR EF02HX--- CAN1 Port Control / Interrupt Register XXXXH
C1UARn EFn2HX--- CAN Upper Arbitration Register (msg. n) UUUUH
C1UGML EF08HX--- CAN Upper Global Mask Long UUUUH
C1UMLM EF0CHX--- CAN Upper Mask of Last Message UUUUH
CC16 FE60H30HCAPCOM Register 16 0000H
CC16IC b F160HEB0HCAPCOM Reg. 16 Interrupt Ctrl. Reg. 0000H
CC17 FE62H31HCAPCOM Register 17 0000H
CC17IC b F162HEB1HCAPCOM Reg. 17 Interrupt Ctrl. Reg. 0000H
CC18 FE64H32HCAPCOM Register 18 0000H
CC18IC b F164HEB2HCAPCOM Reg. 18 Interrupt Ctrl. Reg. 0000H
CC19 FE66H33HCAPCOM Register 19 0000H
CC19IC b F166HEB3HCAPCOM Reg. 19 Interrupt Ctrl. Reg. 0000H
CC20 FE68H34HCAPCOM Register 20 0000H
CC20IC b F168HEB4HCAPCOM Reg. 20 Interrupt Ctrl. Reg. 0000H
CC21 FE6AH35HCAPCOM Register 21 0000H
CC21IC b F16AHEB5HCAPCOM Reg. 21 Interrupt Ctrl. Reg. 0000H
CC22 FE6CH36HCAPCOM Register 22 0000H
CC22IC b F16CHEB6HCAPCOM Reg. 22 Interrupt Ctrl. Reg. 0000H
CC23 FE6EH37HCAPCOM Register 23 0000H
CC23IC b F16EHEB7HCAPCOM Reg. 23 Interrupt Ctrl. Reg. 0000H
CC24 FE70H38HCAPCOM Register 24 0000H
CC24IC b F170HEB8HCAPCOM Reg. 24 Interrupt Ctrl. Reg. 0000H
CC25 FE72H39HCAPCOM Register 25 0000H
CC25IC b F172HEB9HCAPCOM Reg. 25 Interrupt Ctrl. Reg. 0000H
CC26 FE74H3AHCAPCOM Register 26 0000H
CC26IC b F174HEBAHCAPCOM Reg. 26 Interrupt Ctrl. Reg. 0000H
CC27 FE76H3BHCAPCOM Register 27 0000H
Table 7 C164CM Registers, Ordered by Name (cont’d)
Name Physical
Address
8-Bit
Addr.
Description Reset
Value
C164CM
C164SM
Data Sheet 35 V1.0, 2001-05
CC27IC b F176HEBBHCAPCOM Reg. 27 Interrupt Ctrl. Reg. 0000H
CC28 FE78H3CHCAPCOM Register 28 0000H
CC28IC b F178HEBCHCAPCOM Reg. 28 Interrupt Ctrl. Reg. 0000H
CC29 FE7AH3DHCAPCOM Register 29 0000H
CC29IC b F184HEC2HCAPCOM Reg. 29 Interrupt Ctrl. Reg. 0000H
CC30 FE7CH3EHCAPCOM Register 30 0000H
CC30IC b F18CHEC6HCAPCOM Reg. 30 Interrupt Ctrl. Reg. 0000H
CC31 FE7EH3FHCAPCOM Register 31 0000H
CC31IC b F194HECAHCAPCOM Reg. 31 Interrupt Ctrl. Reg. 0000H
CC60 FE30H18HCAPCOM 6 Register 0 0000H
CC61 FE32H19HCAPCOM 6 Register 1 0000H
CC62 FE34H1AHCAPCOM 6 Register 2 0000H
CC6EIC b F188HEC4HCAPCOM 6 Emergency Interrupt Control
Register
0000H
CC6CIC b F17EHEBFHCAPCOM 6 Interrupt Control Register 0000H
CC6MCON b FF32H99HCAPCOM 6 Mode Control Register 00FFH
CC6MIC b FF36H9BHCAPCOM 6 Mode Interrupt Ctrl. Reg. 0000H
CC6MSEL F036HE1BHCAPCOM 6 Mode Select Register 0000H
CC8IC b FF88HC4HExternal Interrupt 0 Control Register 0000H
CC9IC b FF8AHC5HExternal Interrupt 1 Control Register 0000H
CCM4 b FF22H91HCAPCOM Mode Control Register 4 0000H
CCM5 b FF24H92HCAPCOM Mode Control Register 5 0000H
CCM6 b FF26H93HCAPCOM Mode Control Register 6 0000H
CCM7 b FF28H94HCAPCOM Mode Control Register 7 0000H
CMP13 FE36H1BHCAPCOM 6 Timer 13 Compare Reg. 0000H
CP FE10H08HCPU Context Pointer Register FC00H
CSP FE08H04HCPU Code Segment Pointer Register
(8 bits, not directly writeable)
0000H
CTCON b FF30H98HCAPCOM 6 Compare Timer Ctrl. Reg. 1010H
DP0H b F102HE81HP0H Direction Control Register 00H
Table 7 C164CM Registers, Ordered by Name (cont’d)
Name Physical
Address
8-Bit
Addr.
Description Reset
Value
C164CM
C164SM
Data Sheet 36 V1.0, 2001-05
DP0L b F100HE80HP0L Direction Control Register 00H
DP1H b F106HE83HP1H Direction Control Register 00H
DP1L b F104HE82HP1L Direction Control Register 00H
DP20 b FFB6HDBHPort 20 Direction Control Register 00H
DP8 b FFD6HEBHPort 8 Direction Control Register 00H
DPP0 FE00H00HCPU Data Page Pointer 0 Reg. (10 bits) 0000H
DPP1 FE02H01HCPU Data Page Pointer 1 Reg. (10 bits) 0001H
DPP2 FE04H02HCPU Data Page Pointer 2 Reg. (10 bits) 0002H
DPP3 FE06H03HCPU Data Page Pointer 3 Reg. (10 bits) 0003H
EXICON b F1C0HEE0HExternal Interrupt Control Register 0000H
EXISEL b F1DAHEEDHExternal Interrupt Source Select Reg. 0000H
FOCON b FFAAHD5HFrequency Output Control Register 0000H
IDCHIP F07CHE3EHIdentifier XXXXH
IDMANUF F07EHE3FHIdentifier 1820H
IDMEM F07AHE3DHIdentifier X008H
IDPROG F078HE3CHIdentifier XXXXH
IDMEM2 F076HE3BHIdentifier 0000H
ISNC b F1DEHEEFHInterrupt Subnode Control Register 0000H
MDC b FF0EH87HCPU Multiply Divide Control Register 0000H
MDH FE0CH06HCPU Multiply Divide Reg. – High Word 0000H
MDL FE0EH07HCPU Multiply Divide Reg. – Low Word 0000H
ODP8 b F1D6HEEBHPort 8 Open Drain Control Register 00H
ONES b FF1EH8FHConstant Value 1’s Register (read only) FFFFH
OPAD EDC2HX--- OTP Progr. Interface Address Register 0000H
OPCTRL EDC0HX--- OTP Progr. Interface Control Register 0007H
OPDAT EDC4HX--- OTP Progr. Interface Data Register 0000H
P0H b FF02H81HPort 0 High Reg. (Upper half of PORT0) 00H
P0L b FF00H80HPort 0 Low Reg. (Lower half of PORT0) 00H
P1H b FF06H83HPort 1 High Reg. (Upper half of PORT1) 00H
P1L b FF04H82HPort 1 Low Reg. (Lower half of PORT1) 00H
Table 7 C164CM Registers, Ordered by Name (cont’d)
Name Physical
Address
8-Bit
Addr.
Description Reset
Value
C164CM
C164SM
Data Sheet 37 V1.0, 2001-05
P5 b FFA2HD1HPort 5 Register (read only) XXXXH
P5DIDIS b FFA4HD2HPort 5 Digital Input Disable Register 0000H
P20 b FFB4HDAHPort 20 Register (6 bits) 00H
P8 b FFD4HEAHPort 8 Register (4 bits) 00H
PECC0 FEC0H60HPEC Channel 0 Control Register 0000H
PECC1 FEC2H61HPEC Channel 1 Control Register 0000H
PECC2 FEC4H62HPEC Channel 2 Control Register 0000H
PECC3 FEC6H63HPEC Channel 3 Control Register 0000H
PECC4 FEC8H64HPEC Channel 4 Control Register 0000H
PECC5 FECAH65HPEC Channel 5 Control Register 0000H
PECC6 FECCH66HPEC Channel 6 Control Register 0000H
PECC7 FECEH67HPEC Channel 7 Control Register 0000H
POCON0H F082HE41HPort P0H Output Control Register 0011H
POCON0L F080HE40HPort P0L Output Control Register 0011H
POCON1H F086HE43HPort P1H Output Control Register 0011H
POCON1L F084HE42HPort P1L Output Control Register 0011H
POCON20 F0AAHE55HPort P20 Output Control Register 0000H
POCON8 F092HE49HPort P8 Output Control Register 0022H
PSW b FF10H88HCPU Program Status Word 0000H
RP0H b F108HE84HSystem Startup Config. Reg. (Rd. only) XXH
RSTCON b F1E0Hm--- Reset Control Register 00XXH
RTCH F0D6HE6BHRTC High Register no
RTCL F0D4HE6AHRTC Low Register no
S0BG FEB4H5AHSerial Channel 0 Baud Rate Generator
Reload Register
0000H
S0CON b FFB0HD8HSerial Channel 0 Control Register 0000H
S0EIC b FF70HB8HSerial Channel 0 Error Interrupt Ctrl.
Reg.
0000H
S0RBUF FEB2H59HSerial Channel 0 Receive Buffer Reg.
(read only)
XXXXH
Table 7 C164CM Registers, Ordered by Name (cont’d)
Name Physical
Address
8-Bit
Addr.
Description Reset
Value
C164CM
C164SM
Data Sheet 38 V1.0, 2001-05
S0RIC b FF6EHB7HSerial Channel 0 Receive Interrupt
Control Register
0000H
S0TBIC b F19CHECEHSerial Channel 0 Transmit Buffer
Interrupt Control Register
0000H
S0TBUF FEB0H58HSerial Channel 0 Transmit Buffer Reg.
(write only)
0000H
S0TIC b FF6CHB6HSerial Channel 0 Transmit Interrupt
Control Register
0000H
SP FE12H09HCPU System Stack Pointer Register FC00H
SSCBR F0B4HE5AHSSC Baudrate Register 0000H
SSCCON b FFB2HD9HSSC Control Register 0000H
SSCEIC b FF76HBBHSSC Error Interrupt Control Register 0000H
SSCRB F0B2HE59HSSC Receive Buffer XXXXH
SSCRIC b FF74HBAHSSC Receive Interrupt Control Register 0000H
SSCTB F0B0HE58HSSC Transmit Buffer 0000H
SSCTIC b FF72HB9HSSC Transmit Interrupt Control Register 0000H
STKOV FE14H0AHCPU Stack Overflow Pointer Register FA00H
STKUN FE16H0BHCPU Stack Underflow Pointer Register FC00H
SYSCON b FF12H89HCPU System Configuration Register 1)0xx0H
SYSCON1 b F1DCHEEEHCPU System Configuration Register 1 0000H
SYSCON2 b F1D0HEE8HCPU System Configuration Register 2 0000H
SYSCON3 b F1D4HEEAHCPU System Configuration Register 3 0000H
T12IC b F190HEC8HCAPCOM 6 Timer 12 Interrupt Ctrl. Reg. 0000H
T12OF F034HE1AHCAPCOM 6 Timer 12 Offset Register 0000H
T12P F030HE18HCAPCOM 6 Timer 12 Period Register 0000H
T13IC b F198HECCHCAPCOM 6 Timer 13 Interrupt Ctrl. Reg. 0000H
T13P F032HE19HCAPCOM 6 Timer 13 Period Register 0000H
T14 F0D2HE69HRTC Timer 14 Register no
T14REL F0D0HE68HRTC Timer 14 Reload Register no
T2 FE40H20HGPT1 Timer 2 Register 0000H
T2CON b FF40HA0HGPT1 Timer 2 Control Register 0000H
Table 7 C164CM Registers, Ordered by Name (cont’d)
Name Physical
Address
8-Bit
Addr.
Description Reset
Value
C164CM
C164SM
Data Sheet 39 V1.0, 2001-05
Note: The three registers of the OTP programming interface are, of course, only
implemented in the OTP versions of the C164CM.
T2IC b FF60HB0HGPT1 Timer 2 Interrupt Control Register 0000H
T3 FE42H21HGPT1 Timer 3 Register 0000H
T3CON b FF42HA1HGPT1 Timer 3 Control Register 0000H
T3IC b FF62HB1HGPT1 Timer 3 Interrupt Control Register 0000H
T4 FE44H22HGPT1 Timer 4 Register 0000H
T4CON b FF44HA2HGPT1 Timer 4 Control Register 0000H
T4IC b FF64HB2HGPT1 Timer 4 Interrupt Control Register 0000H
T7 F050HE28HCAPCOM Timer 7 Register 0000H
T78CON b FF20H90HCAPCOM Timer 7 and 8 Ctrl. Reg. 0000H
T7IC b F17AHEBDHCAPCOM Timer 7 Interrupt Ctrl. Reg. 0000H
T7REL F054HE2AHCAPCOM Timer 7 Reload Register 0000H
T8 F052HE29HCAPCOM Timer 8 Register 0000H
T8IC b F17CHEBEHCAPCOM Timer 8 Interrupt Ctrl. Reg. 0000H
T8REL F056HE2BHCAPCOM Timer 8 Reload Register 0000H
TFR b FFACHD6HTrap Flag Register 0000H
TRCON b FF34H9AHCAPCOM 6 Trap Enable Ctrl. Reg. 00XXH
WDT FEAEH57HWatchdog Timer Register (read only) 0000H
WDTCON FFAEHD7HWatchdog Timer Control Register 2)00xxH
XP0IC b F186HEC3HCAN1 Module Interrupt Control Register 0000H
XP1IC b F18EHEC7HUnassigned Interrupt Control Reg. 0000H
XP3IC b F19EHECFHPLL/RTC Interrupt Control Register 0000H
ZEROS b FF1CH8EHConstant Value 0’s Register (read only) 0000H
1) The system configuration is selected during reset.
2) The reset value depends on the indicated reset source.
Table 7 C164CM Registers, Ordered by Name (cont’d)
Name Physical
Address
8-Bit
Addr.
Description Reset
Value
C164CM
C164SM
Data Sheet 40 V1.0, 2001-05
Absolute Maximum Ratings
Note: Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in
the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
During absolute maximum rating overload conditions (VIN >VDD or VIN <VSS) the
voltage on VDD pins with respect to ground (VSS) must not exceed the values
defined by the absolute maximum ratings.
Table 8 Absolute Maximum Rating Parameters
Parameter Symbol Limit Values Unit Notes
min. max.
Storage temperature TST -65 150 °C–
Junction temperature TJ-40 150 °C under bias
Voltage on VDD pins with
respect to ground (VSS)
VDD -0.5 6.5 V –
Voltage on any pin with
respect to ground (VSS)
VIN -0.5 VDD + 0.5 V –
Input current on any pin
during overload condition
–-10 10 mA –
Absolute sum of all input
currents during overload
condition
–– |100| mA –
Power dissipation PDISS –1.5 W –
C164CM
C164SM
Data Sheet 41 V1.0, 2001-05
Operating Conditions
The following operating conditions must not be exceeded in order to ensure correct
operation of the C164CM. All parameters specified in the following sections refer to
these operating conditions, unless otherwise noticed.
Table 9 Operating Condition Parameters
Parameter Symbol Limit Values Unit Notes
min. max.
Digital supply voltage VDD 4.5 5.5 V Active mode,
fCPUmax = 25 MHz
2.51)
1) Output voltages and output currents will be reduced when VDD leaves the range defined for active mode.
5.5 V PowerDown mode
Digital ground voltage VSS 0 V Reference voltage
Overload current IOV –±5 mA Per pin2)3)
2) Overload conditions occur if the standard operatings conditions are exceeded, i.e. the voltage on any pin
exceeds the specified range (i.e. VOV >VDD + 0.5 V or VOV <VSS - 0.5 V). The absolute sum of input overload
currents on all pins may not exceed 50 mA. The supply voltage must remain within the specified limits.
Proper operation is not guaranteed if overload conditions occur on functional pins line XTAL1, RD, WR, etc.
3) Not 100% tested, guaranteed by design and characterization.
Absolute sum of overload
currents
Σ|IOV|–50 mA 3)
External Load
Capacitance
CL–100 pF Pin drivers in
default mode4)
4) The timing is valid for pin drivers operating in default current mode (selected after reset). Reducing the output
current may lead to increased delays or reduced driving capability (CL).
Ambient temperature TA070°C SAB-C164CM …
-40 85 °C SAF-C164CM …
-40 125 °C SAK-C164CM …
C164CM
C164SM
Data Sheet 42 V1.0, 2001-05
Parameter Interpretation
The parameters listed in the following partly represent the characteristics of the C164CM
and partly its demands on the system. To aid in interpreting the parameters right, when
evaluating them for a design, they are marked in column “Symbol”:
CC (Controller Characteristics):
The logic of the C164CM will provide signals with the respective characteristics.
SR (System Requirement):
The external system must provide signals with the respective characteristics to the
C164CM.
DC Characteristics
(Operating Conditions apply)1)
Parameter Symbol Limit Values Unit Test Conditions
min. max.
Input low voltage (TTL,
all except XTAL1)
VIL SR -0.5 0.2 VDD
- 0.1
V–
Input low voltage XTAL1 VIL2 SR -0.5 0.3 VDD V–
Input high voltage (TTL,
all except RSTIN, XTAL1)
VIH SR 0.2 VDD
+ 0.9
VDD +
0.5
V–
Input high voltage RSTIN
(when operated as input)
VIH1 SR 0.6 VDD VDD +
0.5
V–
Input high voltage XTAL1 VIH2 SR 0.7 VDD VDD +
0.5
V–
Output low voltage2) VOL CC –1.0 V IOL ≤ IOLmax3)
–0.45 V IOL ≤ IOLnom3)4)
Output high voltage5) VOH CC VDD -
1.0
–VIOH ≥ IOHmax3)
VDD -
0.45
–VIOH ≥ IOHnom3)4)
Input leakage current (Port 5) IOZ1 CC –±200 nA 0 V < VIN < VDD
Input leakage current (all other) IOZ2 CC –±500 nA 0.45 V < VIN <
VDD
RSTIN inactive current6) IRSTH7) –-10 µAVIN = VIH1
RSTIN active current6) IRSTL8) -100 –µAVIN = VIL
RD/WR inact. current9) IRWH7) –-40 µAVOUT = 2.4 V
RD/WR active current9) IRWL8) -500 –µAVOUT = VOLmax
C164CM
C164SM
Data Sheet 43 V1.0, 2001-05
ALE inactive current9) IALEL7) –40 µAVOUT = VOLmax
ALE active current9) IALEH8) 500 –µAVOUT = 2.4 V
PORT0 configuration current10) IP0H7) –-10 µAVIN = VIHmin
IP0L8) -100 –µAVIN = VILmax
XTAL1 input current IIL CC –±20 µA0 V < VIN < VDD
Pin capacitance11)
(digital inputs/outputs)
CIO CC –10 pF f = 1 MHz
TA = 25 °C
1) Keeping signal levels within the levels specified in this table, ensures operation without overload conditions.
For signal levels outside these specifications also refer to the specification of the overload current IOV.
2) For pin RSTIN this specification is only valid in bidirectional reset mode.
3) The maximum deliverable output current of a port driver depends on the selected output driver mode, see
Table 10, Current Limits for Port Output Drivers. The limit for pin groups must be respected.
4) As a rule, with decreasing output current the output levels approach the respective supply level (VOL → VSS,
VOH → VDD). However, only the levels for nominal output currents are guaranteed.
5) This specification is not valid for outputs which are switched to open drain mode. In this case the respective
output will float and the voltage results from the external circuitry.
6) These parameters describe the RSTIN pullup, which equals a resistance of ca. 50 to 250 kΩ.
7) The maximum current may be drawn while the respective signal line remains inactive.
8) The minimum current must be drawn in order to drive the respective signal line active.
9) This specification is valid during Reset and during Adapt-mode.
10) This specification is valid during Reset if required for configuration, and during Adapt-mode.
11) Not 100% tested, guaranteed by design and characterization.
Table 10 Current Limits for Port Output Drivers
Port Output Driver
Mode
Maximum Output Current
(IOLmax, -IOHmax)1)
1) An output current above |IOXnom| may be drawn from up to three pins at the same time.
For any group of 16 neighboring port output pins the total output current in each direction (ΣIOL and Σ-IOH)
must remain below 50 mA.
Nominal Output Current
(IOLnom, -IOHnom)
Strong driver 10 mA 2.5 mA
Medium driver 4.0 mA 1.0 mA
Weak driver 0.5 mA 0.1 mA
DC Characteristics (cont’d)
(Operating Conditions apply)1)
Parameter Symbol Limit Values Unit Test Conditions
min. max.
C164CM
C164SM
Data Sheet 44 V1.0, 2001-05
Power Consumption C164CM (ROM)
(Operating Conditions apply)
Parameter Symbol Limit Values Unit Test
Conditions
min. max.
Power supply current (active)
with all peripherals active
IDD –1 +
2.5 × fCPU
mA RSTIN = VIL
fCPU in [MHz]1)
Idle mode supply current
with all peripherals active
IIDX –1 +
1.1 × fCPU
mA RSTIN = VIH1
fCPU in [MHz]1)
Idle mode supply current
with all peripherals deactivated,
PLL off, SDD factor = 32
IIDO2) –500 +
50 × fOSC
µARSTIN = VIH1
fOSC in [MHz]1)
Sleep and Power-down mode
supply current with RTC running
IPDR2) –200 +
25 × fOSC
µAVDD = VDDmax
fOSC in [MHz]3)
Sleep and Power-down mode
supply current with RTC disabled
IPDO –50 µAVDD = VDDmax3)
1) The supply current is a function of the operating frequency. This dependency is illustrated in Figure 9.
These parameters are tested at VDDmax and maximum CPU clock with all outputs disconnected and all inputs
at VIL or VIH.
2) This parameter is determined mainly by the current consumed by the oscillator (see Figure 8). This current,
however, is influenced by the external oscillator circuitry (crystal, capacitors). The values given refer to a typical
circuitry and may change in case of a not optimized external oscillator circuitry.
3) This parameter is tested including leakage currents. All inputs (including pins configured as inputs) at 0 V to
0.1 V or at VDD - 0.1 V to VDD, VREF = 0 V, all outputs (including pins configured as outputs) disconnected.
Power Consumption C164CM (OTP)
(Operating Conditions apply)
Parameter Sym-
bol
Limit Values Unit Test
Conditions
min. max.
Power supply current (active)
with all peripherals active
IDD –10 +
3.5 × fCPU
mA RSTIN = VIL
fCPU in [MHz]1)
Idle mode supply current
with all peripherals active
IIDX –5 +
1.25 × fCPU
mA RSTIN = VIH1
fCPU in [MHz]1)
Idle mode supply current
with all peripherals deactivated,
PLL off, SDD factor = 32
IIDO2) –500 +
50 × fOSC
µARSTIN = VIH1
fOSC in [MHz]1)
C164CM
C164SM
Data Sheet 45 V1.0, 2001-05
Figure 8 Idle and Power Down Supply Current as a Function of Oscillator
Frequency
Sleep and Power-down mode
supply current with RTC running
IPDR2) –200 +
25 × fOSC
µAVDD = VDDmax
fOSC in [MHz]3)
Sleep and Power-down mode
supply current with RTC disabled
IPDO –50 µAVDD = VDDmax3)
1) The supply current is a function of the operating frequency. This dependency is illustrated in Figure 10.
These parameters are tested at VDDmax and maximum CPU clock with all outputs disconnected and all inputs
at VIL or VIH.
2) This parameter is determined mainly by the current consumed by the oscillator (see Figure 8). This current,
however, is influenced by the external oscillator circuitry (crystal, capacitors). The values given refer to a typical
circuitry and may change in case of a not optimized external oscillator circuitry.
3) This parameter is tested including leakage currents. All inputs (including pins configured as inputs) at 0 V to
0.1 V or at VDD - 0.1 V to VDD, VREF = 0 V, all outputs (including pins configured as outputs) disconnected.
Power Consumption C164CM (OTP) (cont’d)
(Operating Conditions apply)
Parameter Sym-
bol
Limit Values Unit Test
Conditions
min. max.
MCD04433
0f
OSC
Ι
PDOmax
I
4 8 12 16
0
250
MHz
µA
500
750
1000
1250
1500
PDRmax
I
IDOtyp
I
IDOmax
I
C164CM
C164SM
Data Sheet 46 V1.0, 2001-05
Figure 9 Supply/Idle Current as a Function of Operating Frequency
for ROM Derivatives
I [mA]
fCPU [MHz]
10 15 20 25
IDD5max
IDD5typ
IIDX5max
IIDX5typ
20
40
60
80
100
C164CM
C164SM
Data Sheet 47 V1.0, 2001-05
Figure 10 Supply/Idle Current as a Function of Operating Frequency
for OTP Derivatives
I [mA]
fCPU [MHz]
10 15 20 25
IDD5max
IDD5typ
IIDX5max
IIDX5typ
20
40
60
80
100
C164CM
C164SM
Data Sheet 48 V1.0, 2001-05
AC Characteristics
Definition of Internal Timing
The internal operation of the C164CM is controlled by the internal CPU clock fCPU. Both
edges of the CPU clock can trigger internal (e.g. pipeline) or external (e.g. bus cycles)
operations.
The specification of the external timing (AC Characteristics) therefore depends on the
time between two consecutive edges of the CPU clock, called “TCL” (see Figure 11).
Figure 11 Generation Mechanisms for the CPU Clock
The CPU clock signal fCPU can be generated from the oscillator clock signal fOSC via
different mechanisms. The duration of TCLs and their variation (and also the derived
external timing) depends on the used mechanism to generate fCPU. This influence must
be regarded when calculating the timings for the C164CM.
Note: The example for PLL operation shown in Figure 11 refers to a PLL factor of 4.
The used mechanism to generate the basic CPU clock is selected by bitfield CLKCFG
in register RP0H.7-5.
Upon a long hardware reset register RP0H is loaded with the logic levels present on the
upper half of PORT0 (P0H), i.e. bitfield CLKCFG represents the logic levels on pins
MCT04338
f
OSC
f
CPU
Phase Locked Loop Operation
TCL
f
OSC
f
CPU
Direct Clock Drive
f
OSC
f
CPU
Prescaler Operation
TCL
TCL
TCL
TCL
TCL
C164CM
C164SM
Data Sheet 49 V1.0, 2001-05
P0.15-13 (P0H.7-5). Register RP0H can be loaded from the upper half of register
RSTCON under software control.
Table 11 associates the combinations of these three bits with the respective clock
generation mode.
Prescaler Operation
When prescaler operation is configured (CLKCFG = 001B) the CPU clock is derived from
the internal oscillator (input clock signal) by a 2:1 prescaler.
The frequency of fCPU is half the frequency of fOSC and the high and low time of fCPU (i.e.
the duration of an individual TCL) is defined by the period of the input clock fOSC.
The timings listed in the AC Characteristics that refer to TCLs therefore can be
calculated using the period of fOSC for any TCL.
Phase Locked Loop
When PLL operation is configured (via CLKCFG) the on-chip phase locked loop is
enabled and provides the CPU clock (see Table 11). The PLL multiplies the input
frequency by the factor F which is selected via the combination of pins P0.15-13 (i.e.
fCPU = fOSC × F). With every F’th transition of fOSC the PLL circuit synchronizes the CPU
clock to the input clock. This synchronization is done smoothly, i.e. the CPU clock
frequency does not change abruptly.
Table 11 C164CM Clock Generation Modes
CLKCFG1)
(RP0H.7-5)
1) Please note that pin P0.15 (corresponding to RP0H.7) is inverted in emulation mode, and thus also in EHM.
CPU Frequency
fCPU = fOSC × F
External Clock
Input Range2)
2) The external clock input range refers to a CPU clock range of 10 …25 MHz.
Notes
11 1 fOSC × 4 2.5 to 6.25 MHz Default configuration
110 fOSC × 3 3.33 to 8.33 MHz –
101 fOSC × 2 5 to 12.5 MHz –
100 fOSC × 5 2 to 5 MHz –
011 fOSC × 1 1 to 25 MHz Direct drive3)
3) The maximum frequency depends on the duty cycle of the external clock signal.
010 fOSC × 1.5 6.66 to 16.66 MHz –
001 fOSC / 2 2 to 50 MHz CPU clock via prescaler
000 fOSC × 2.5 4 to 10 MHz –
C164CM
C164SM
Data Sheet 50 V1.0, 2001-05
Due to this adaptation to the input clock the frequency of fCPU is constantly adjusted so
it is locked to fOSC. The slight variation causes a jitter of fCPU which also effects the
duration of individual TCLs.
The timings listed in the AC Characteristics that refer to TCLs therefore must be
calculated using the minimum TCL that is possible under the respective circumstances.
The actual minimum value for TCL depends on the jitter of the PLL. As the PLL is
constantly adjusting its output frequency so it corresponds to the applied input frequency
(crystal or oscillator) the relative deviation for periods of more than one TCL is lower than
for one single TCL (see formula and Figure 12).
For a period of N×TCL the minimum value is computed using the corresponding
deviation DN:
(N × TCL)min = N × TCLNOM - DN; DN [ns] = ±(13.3 + N×6.3)/fCPU [MHz],
where N = number of consecutive TCLs and 1 ≤ N ≤ 40.
So for a period of 3 TCLs @ 25 MHz (i.e. N = 3): D3 = (13.3 + 3 × 6.3)/25 = 1.288 ns,
and (3TCL)min = 3TCLNOM - 1.288 ns = 58.7 ns (@ fCPU = 25 MHz).
This is especially important for bus cycles using waitstates and e.g. for the operation of
timers, serial interfaces, etc. For all slower operations and longer periods (e.g. pulse train
generation or measurement, lower baudrates, etc.) the deviation caused by the PLL jitter
is neglectible.
Note: For all periods longer than 40 TCL the N = 40 value can be used (see Figure 12).
Figure 12 Approximated Maximum Accumulated PLL Jitter
MCD04455
N
Max. jitter D
N
±1
±10
±20
±30
ns
±26.5
110 20 40
This approximated formula is valid for
1 N 40 and 10 MHz f
CPU
25 MHz.
10 MHz
16 MHz
20 MHz
25 MHz
30
<
–<
–<
–<
–
C164CM
C164SM
Data Sheet 51 V1.0, 2001-05
Direct Drive
When direct drive is configured (CLKCFG = 011B) the on-chip phase locked loop is
disabled and the CPU clock is directly driven from the internal oscillator with the input
clock signal.
The frequency of fCPU directly follows the frequency of fOSC so the high and low time of
fCPU (i.e. the duration of an individual TCL) is defined by the duty cycle of the input clock
fOSC.
The timings listed below that refer to TCLs therefore must be calculated using the
minimum TCL that is possible under the respective circumstances. This minimum value
can be calculated via the following formula:
TCLmin = 1/fOSC × DCmin (DC = duty cycle)
For two consecutive TCLs the deviation caused by the duty cycle of fOSC is compensated
so the duration of 2TCL is always 1/fOSC. The minimum value TCLmin therefore has to
be used only once for timings that require an odd number of TCLs (1, 3, …). Timings that
require an even number of TCLs (2, 4, …) may use the formula 2TCL = 1/fOSC.
C164CM
C164SM
Data Sheet 52 V1.0, 2001-05
AC Characteristics
External Clock Drive XTAL1
(Operating Conditions apply)
Figure 13 External Clock Drive XTAL1
Note: If the on-chip oscillator is used together with a crystal, the oscillator frequency is
limited to a range of 4 MHz to 16 MHz.
It is strongly recommended to measure the oscillation allowance (or margin) in the
final target system (layout) to determine the optimum parameters for the oscillator
operation. Please refer to the limits specified by the crystal supplier.
When driven by an external clock signal it will accept the specified frequency
range. Operation at lower input frequencies is possible but is guaranteed by
design only (not 100% tested).
Table 12 External Clock Drive Characteristics
Parameter Symbol Direct Drive
1:1
Prescaler
2:1
PLL
1:N
Unit
min. max. min. max. min. max.
Oscillator period tOSC SR 40 –20 –601)
1) The minimum and maximum oscillator periods for PLL operation depend on the selected CPU clock generation
mode. Please see respective table above.
5001) ns
High time2)
2) The clock input signal must reach the defined levels VIL2 and VIH2.
t1SR 203)
3) The minimum high and low time refers to a duty cycle of 50%. The maximum operating frequency (fCPU) in
direct drive mode depends on the duty cycle of the clock input signal.
–6–10 –ns
Low time2) t2SR 203) –6–10 –ns
Rise time2) t3SR –8–5–10 ns
Fall time2) t4SR –8–5–10 ns
MCT02534
3
t4
t
VIH2
VIL
VDD
0.5
1
t
2
t
OSC
t
C164CM
C164SM
Data Sheet 53 V1.0, 2001-05
A/D Converter Characteristics
(Operating Conditions apply)
Table 13 A/D Converter Characteristics
Parameter Symbol Limit Values Unit Test
Conditions
min. max.
Analog reference supply VAREF SR 4.0 VDD + 0.1 V 1)
1) TUE is tested at VAREF =5.0V, VAGND =0V, VDD = 4.9 V. It is guaranteed by design for all other voltages
within the defined voltage range.
If the analog reference supply voltage exceeds the power supply voltage by up to 0.2 V
(i.e. VAREF =VDD = +0.2 V) the maximum TUE is increased to ±3 LSB. This range is not 100% tested.
The specified TUE is guaranteed only if the absolute sum of input overload currents on Port 5 pins (see IOV
specification) does not exceed 10 mA.
During the reset calibration sequence the maximum TUE may be ±4 LSB.
Analog reference ground VAGNDSR VSS - 0.1 VSS + 0.2 V –
Analog input voltage range VAIN SR VAGND VAREF V2)
2) VAIN may exceed VAGND or VAREF up to the absolute maximum ratings. However, the conversion result in
these cases will be X000H or X3FFH, respectively.
Basic clock frequency fBC 0.5 6.25 MHz 3)
3) The limit values for fBC must not be exceeded when selecting the CPU frequency and the ADCTC setting.
Conversion time tCCC –40 tBC +
tS + 2tCPU
–4)
tCPU = 1 / fCPU
4) This parameter includes the sample time tS, the time for determining the digital result and the time to load the
result register with the conversion result.
Values for the basic clock tBC depend on programming and can be taken from Table 14.
This parameter depends on the ADC control logic. It is not a real maximum value, but rather a fixum.
Calibration time after reset tCAL CC –3328 tBC –5)
5) During the reset calibration conversions can be executed (with the current accuracy). The time required for
these conversions is added to the total reset calibration time.
Total unadjusted error TUE CC –±2LSB
1)
Internal resistance of
reference voltage source
RAREF SR –tBC / 60
- 0.25
kΩtBC in [ns]6)7)
6) During the conversion the ADC’s capacitance must be repeatedly charged or discharged. The internal
resistance of the reference voltage source must allow the capacitance to reach its respective voltage level
within each conversion step. The maximum internal resistance results from the programmed conversion
timing.
7) Not 100% tested, guaranteed by design and characterization.
Internal resistance of analog
source
RASRC SR –tS / 450
- 0.25
kΩtS in [ns]7)8)
ADC input capacitance CAIN CC –33 pF 7)
C164CM
C164SM
Data Sheet 54 V1.0, 2001-05
Sample time and conversion time of the C164CM’s A/D Converter are programmable.
Table 14 should be used to calculate the above timings.
The limit values for fBC must not be exceeded when selecting ADCTC.
Converter Timing Example:
Assumptions: fCPU = 25 MHz (i.e. tCPU = 40 ns), ADCTC = ‘00’, ADSTC = ‘00’.
Basic clock fBC = fCPU/4 = 6.25 MHz, i.e. tBC = 160 ns.
Sample time tS= tBC × 8 = 1280 ns.
Conversion time tC= tS + 40 tBC + 2 tCPU = (1280 + 6400 + 80) ns = 7.8 µs.
8) During the sample time the input capacitance CAIN can be charged/discharged by the external source. The
internal resistance of the analog source must allow the capacitance to reach its final voltage level within tS.
After the end of the sample time tS, changes of the analog input voltage have no effect on the conversion result.
Values for the sample time tS depend on programming and can be taken from Table 14.
Table 14 A/D Converter Computation Table
ADCON.15|14
(ADCTC)
A/D Converter
Basic Clock fBC
ADCON.13|12
(ADSTC)
Sample time
tS
00 fCPU / 4 00 tBC × 8
01 fCPU / 2 01 tBC × 16
10 fCPU / 16 10 tBC × 32
11 fCPU / 8 11 tBC × 64
C164CM
C164SM
Data Sheet 55 V1.0, 2001-05
Testing Waveforms
Figure 14 Input Output Waveforms
Figure 15 Float Waveforms
MCA04414
2.4 V
0.45 V
1.8 V
0.8 V
1.8 V
0.8 V
Test Points
AC inputs during testing are driven at 2.4 V for a logic ’1’ and 0.45 V for a logic ’0’.
Timing measurements are made at IH
V
min for a logic ’1’ and
V
IL max for a logic ’0’.
MCA00763
- 0.1 V
+ 0.1 V
+ 0.1 V
- 0.1 V
Reference
For timing purposes a port pin is no longer floating when a 100 mV change from load voltage occurs,
but begins to float when a 100 mV change from the loaded
OH
V
Timing
Points
Load
V
V
Load
OH
V
V
OL
/
V
OL
level occurs (
I
OH OL
I
/ = 20 mA).
C164CM
C164SM
Data Sheet 56 V1.0, 2001-05
Memory Cycle Variables
The timing tables below use three variables which are derived from the BUSCONx
registers and represent the special characteristics of the programmed memory cycle.
The following table describes, how these variables are to be computed.
Note: Please respect the maximum operating frequency of the respective derivative.
AC Characteristics
Table 15 Memory Cycle Variables
Description Symbol Values
ALE Extension tATCL × <ALECTL>
Memory Cycle Time Waitstates tC2TCL × (15 - <MCTC>)
Memory Tristate Time tF2TCL × (1 - <MTTC>)
Multiplexed Bus
(Operating Conditions apply)
ALE cycle time = 6 TCL + 2tA + tC + tF (120 ns at 25 MHz CPU clock without waitstates)
Parameter Symbol Max. CPU Clock
= 25 MHz
Variable CPU Clock
1 / 2TCL = 1 to 25 MHz
Unit
min. max. min. max.
ALE high time t5CC 10 + tA–TCL - 10
+ tA
–ns
Address setup to ALE t6CC 4 + tA–TCL - 16
+ tA
–ns
Address hold after ALE t7CC 10 + tA–TCL - 10
+ tA
–ns
ALE falling edge to RD,
WR (with RW-delay)
t8CC 10 + tA–TCL - 10
+ tA
–ns
ALE falling edge to RD,
WR (no RW-delay)
t9CC -10 + tA–-10 + tA–ns
Address float after RD,
WR (with RW-delay)
t10 CC –6–6ns
Address float after RD,
WR (no RW-delay)
t11 CC –26 –TCL + 6 ns
RD, WR low time
(with RW-delay)
t12 CC 30 + tC–2TCL - 10
+ tC
–ns
C164CM
C164SM
Data Sheet 57 V1.0, 2001-05
RD, WR low time
(no RW-delay)
t13 CC 50 + tC–3TCL - 10
+ tC
–ns
RD to valid data in
(with RW-delay)
t14 SR –20 + tC–2TCL - 20
+ tC
ns
RD to valid data in
(no RW-delay)
t15 SR –40 + tC–3TCL - 20
+ tC
ns
ALE low to valid data in t16 SR –40 + tA
+ tC
–3TCL - 20
+ tA + tC
ns
Address to valid data in t17 SR –50 + 2tA
+ tC
–4TCL - 30
+ 2tA + tC
ns
Data hold after RD
rising edge
t18 SR 0 –0–ns
Data float after RD t19 SR –26 + tF–2TCL - 14
+ tF
ns
Data valid to WR t22 CC 20 + tC–2TCL - 20
+ tC
–ns
Data hold after WR t23 CC 26 + tF–2TCL - 14
+ tF
–ns
ALE rising edge after RD,
WR
t25 CC 26 + tF–2TCL - 14
+ tF
–ns
Address hold after RD,
WR
t27 CC 26 + tF–2TCL - 14
+ tF
–ns
Multiplexed Bus (cont’d)
(Operating Conditions apply)
ALE cycle time = 6 TCL + 2tA + tC + tF (120 ns at 25 MHz CPU clock without waitstates)
Parameter Symbol Max. CPU Clock
= 25 MHz
Variable CPU Clock
1 / 2TCL = 1 to 25 MHz
Unit
min. max. min. max.
C164CM
C164SM
Data Sheet 58 V1.0, 2001-05
Figure 16 External Memory Cycle:
Multiplexed Bus, With Read/Write Delay, Normal ALE
(A10-A8)
Data In
Data OutAddress
Address
t10
Address
ALE
BUS
Read Cycle
RD
BUS
Write Cycle
WR
t5t16
t17
t6t7
t25
t27
t18
t19
t14
t12
t10 t22
t23
t12
t8
t8
C164CM
C164SM
Data Sheet 59 V1.0, 2001-05
Figure 17 External Memory Cycle:
Multiplexed Bus, With Read/Write Delay, Extended ALE
Data OutAddress
Data InAddress
t10
Address
ALE
(A10-A8)
BUS
Read Cycle
RD
BUS
Write Cycle
WR
t5t16
t17
t6t7
t25
t27
t18
t19
t14
t12
t10 t22
t23
t12
t8
t8
C164CM
C164SM
Data Sheet 60 V1.0, 2001-05
Figure 18 External Memory Cycle:
Multiplexed Bus, No Read/Write Delay, Normal ALE
Data OutAddress
Address Data In
Address
ALE
(A10-A8)
BUS
Read Cycle
RD
BUS
Write Cycle
WR
t5t16
t17
t6t7
t25
t27
t18
t19
t15
t13
t22
t23
t13
t9
t9t11
t11
C164CM
C164SM
Data Sheet 61 V1.0, 2001-05
Figure 19 External Memory Cycle:
Multiplexed Bus, No Read/Write Delay, Extended ALE
Data OutAddress
Data InAddress
Address
ALE
(A10-A8)
BUS
Read Cycle
RD
BUS
Write Cycle
WR
t5t16
t17
t6t7
t25
t27
t18
t19
t15
t13
t22
t23
t13
t9
t9t11
t11
C164CM
C164SM
Data Sheet 62 V1.0, 2001-05
AC Characteristics
Figure 20 CLKOUT Timing
Notes
1) Cycle as programmed, including MCTC waitstates (Example shows 0 MCTC WS).
2) The leading edge of the respective command depends on RW-delay.
3) Multiplexed bus modes have a MUX waitstate added after a bus cycle, and an additional MTTC waitstate may
be inserted here.
For a multiplexed bus with MTTC waitstate this delay is 2 CLKOUT cycles.
4) The next external bus cycle may start here.
CLKOUT
(Operating Conditions apply)
Parameter Symbol Max. CPU Clock
= 25 MHz
Variable CPU Clock
1 / 2TCL = 1 to 25 MHz
Unit
min. max. min. max.
CLKOUT cycle time t29 CC 40 40 2TCL 2TCL ns
CLKOUT high time t30 CC 14 –TCL - 6 –ns
CLKOUT low time t31 CC 10 –TCL - 10 –ns
CLKOUT rise time t32 CC –4–4ns
CLKOUT fall time t33 CC –4–4ns
CLKOUT rising edge to
ALE falling edge
t34 CC 0 + tA10 + tA0 + tA10 + tAns
CLKOUT
ALE
t30
t34
MUX/Tristate 3)
t32 t33
t29
Running cycle1)
t31
Command
RD, WR
2)
4)
C164CM
C164SM
Data Sheet 63 V1.0, 2001-05
Package Outlines
P-TQFP-64-4
(Plastic Metric Quad Flat Package)
GPP09297
Sorts of Packing
Package outlines for tubes, trays etc. are contained in our
Data Book “Package Information”.
Dimensions in mm
SMD = Surface Mounted Device
http://www.infineon.com
Published by Infineon Technologies AG
Infineon goes for Business Excellence
“Business excellence means intelligent approaches and clearly
defined processes, which are both constantly under review and
ultimately lead to good operating results.
Better operating results and business excellence mean less
idleness and wastefulness for all of us, more professional
success, more accurate information, a better overview and,
thereby, less frustration and more satisfaction.”
Dr. Ulrich Schumacher
