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MOS INTEGRATED CIRCUIT
µ
PD168113
SERIAL CONTROL 7-CHANNEL H-BRIDGE DRIVER
DATA SHEET
Document No. S16423EJ2V0DS00 (2nd edition)
Date Published April 2004 NS CP(K)
Printed in Japan 2003
The mark shows major revised points.
DESCRIPTION
The
µ
PD168113 is a serial control 7-channel H-bridge driver that consists of a CMOS controller and a MOS output
stage. It can reduce the current consumption and the voltage loss at the output stage compared with a conventional
driver using bipolar transistors, thanks to employment of a MOS process. The
µ
PD168113 can drive various motor
coils by controlling the serial, so that the number of signal lines necessary for controlling the motor can be decreased.
The package is a 56-pin WQFN that helps reduce the mounting area and height.
The
µ
PD168113 can be used to drive two stepping motors, or two DC motors and one coil.
FEATURES
• Seven H-bridge circuits employing power MOS FET
• Low-voltage driving
VDD = 2.7 to 3.6 V
VM = 2.7 to 5.5 V
• Output on-state resistance: 1.0 Ω TYP., 1.5 Ω MAX. (sum of top and bottom stage)
• Output current
<1 ch to 6 ch>
DC current: 0.4 A/ch (when each channel is used independently)
Peak current: 0.7 A/ch (when each channel is used independently)
<7 ch>
DC current: 0.5 A/ch (when used independently)
Peak current: 0.7 A/ch (when used independently)
• Input logic frequency: 6 MHz supported
• Undervoltage lockout circuit
Shuts down the internal circuit at VDD = 1.7 V TYP.
• Overheat protection circuit
Operates at 150°C or more and shuts down internal circuitry.
• 56-pin WQFN (□8 mm, 0.5 mm pitch)
ORDERING INFORMATION
Part Number Package
µ
PD168113K9-9B4-A 56-pin plastic WQFN (8 x 8)
Data Sheet S16423EJ2V0DS
2
µ
PD168113
1. PIN CONFIGURATION
Package: 56-pin plastic WQFN (8 x 8)
42 41 40 39 38 37 36 35 34 33 32 31 30 29
1
IN6B
IN6A
OUT6B
VM6
OUT6A
PGND56
OUT5A
VM5
OUT5B
IN5B
IN5A
LATCH
S DATA
RESETB
234567891011121314
28
27
26
25
24
23
22
21
20
19
18
17
16
15
MOB1
FIL1
FIL2
FB1
OUT1B
VM12
OUT1A
PGND12
OUT2B
VM12
OUT2A
FB2
LGND
SCLK
43
44
45
46
47
48
49
50
51
52
53
54
55
56
TEST
(NC)
FB7
PGND7
OUT7A
VM7
OUT7B
PGND7
CLKB
CLK
COSC
VDD
IN7B
IN7A
FB3
OUT3B
VM34
OUT3A
PGND34
OUT4B
VM34
OUT4A
FB4
FIL4
FIL3
MOB2
EXT2
EXT1
Data Sheet S16423EJ2V0DS 3
µ
PD168113
2. PIN FUNCTIONS
(1/2)
Pin No. Pin Name Function
1 IN6B H-bridge 6 input pin B
2 IN6A H-bridge 6 input pin A
3 OUT6B H-bridge 6 output pin B
4 VM6 H-bridge 6 power supply pin
5 OUT6A H-bridge 6 output pin A
6 PGND56 H-bridge 5, H-bridge 6 GND pin
7 OUT5A H-bridge 5 output pin A
8 VM5 H-bridge 5 power supply pin
9 OUT5B H-bridge 5 output pin B
10 IN5B H-bridge 5 input pin B
11 IN5A H-bridge 5 input pin A
12 LATCH Chip select input pin
13 SDATA Serial data input pin
14 RESETB Reset pin (low active)
15 SCLK Serial clock input pin
16 LGND Logic block GND pin
17 FB2 Current detection resistor connection pin 2
18 OUT2A H-bridge 2 output pin A
19 VM12 H-bridge 1, H-bridge 2 power supply pin
20 OUT2B H-bridge 2 output pin B
21 PGND12 H-bridge 1, H-bridge 2 GND pin
22 OUT1A H-bridge 1 output pin A
23 VM12 H-bridge 1, H-bridge 2 power supply pin
24 OUT1B H-bridge 1 output pin B
25 FB1 Current detection resistor connection pin 1
26 FIL2 Filter capacitor connection pin 2
27 FIL1 Filter capacitor connection pin 1
28 MOB1 MOB signal output pin 1 (open-drain output)
29 EXT1 EXT signal output pin 1
30 EXT2 EXT signal output pin 2
31 MOB2 MOB signal output pin 2 (open-drain output)
32 FIL3 Filter capacitor connection pin 3
33 FIL4 Filter capacitor connection pin 4
34 FB4 Current detection resistor connection pin 4
35 OUT4A H-bridge 4 output pin A
36 VM34 H-bridge 3, H-bridge 4 power supply pin
37 OUT4B H-bridge 4 output pin B
38 PGND34 H-bridge 3, H-bridge 4 GND pin
Data Sheet S16423EJ2V0DS
4
µ
PD168113
(2/2)
Pin No. Pin Name Function
39 OUT3A H-bridge 3 output pin A
40 VM34 H-bridge 3, H-bridge 4 power supply pin
41 OUT3B H-bridge 3 output pin B
42 FB3 Current detection resistor connection pin 3
43 TEST Test input pin (Connect to GND when normal using.)
44 (NC) Unused
45 FB7 Current detection resistor connection pin 7
46 PGND7 H-bridge 7 GND pin
47 OUT7A H-bridge 7 output pin A
48 VM7 H-bridge 7 power supply pin
49 OUT7B H-bridge 7 output pin B
50 PGND7 H-bridge 7 GND pin
51 CLKB External clock output pin/crystal oscillator connection pin 2
52 CLK External clock output pin/crystal oscillator connection pin 1
53 COSC Chopping frequency setting capacitor connection pin
54 VDD Logic block power supply pin
55 IN7B H-bridge 7 input pin B
56 IN7A H-bridge 7 input pin A
Data Sheet S16423EJ2V0DS 5
µ
PD168113
3. BLOCK DIAGRAM
42 41 40 39 38 37 36 35 34 33 32 31 30 29
1
IN
6B
IN
6A
OUT
6B
V
M6
OUT
6A
PGND
56
OUT
5A
V
M5
OUT
5B
IN
5B
IN
5A
LATCH
S DATA
RESETB
FB
3
OUT
3B
V
M34
OUT
3A
PGND
34
OUT
4B
V
M34
OUT
4A
FB
4
FIL
4
FIL
3
MOB
2
EXT
2
EXT
1
234567891011121314
28
27
26
25
24
23
22
21
20
19
18
17
16
15
MOB
1
FIL
1
FIL
2
FB
1
OUT
1B
V
M12
OUT
1A
PGND
12
OUT
2B
V
M12
OUT
2A
FB
2
LGND
SCLK
43
44
45
46
47
48
49
50
51
52
53
54
55
56
TEST
(NC)
FB
7
PGND
7
OUT
7A
V
M7
OUT
7B
PGND
7
CLKB
CLK
COSC
V
DD
IN
7B
IN
7A
H-bridge 3 H-bridge 4
H-bridge 5
H-bridge 6
H-bridge 7
H-bridge 1
H-bridge 2
OSC H-bridge 6
Pre-driver
H-bridge 3
Pre-driver
H-bridge 4
Pre-driver
H-bridge 5 to
H-bridge 7
Control
H-bridge 3, H-bridge 4
Control
H-bridge 1, H-bridge 2
Control
H-bridge 1
Pre-driver
H-bridge 7
Pre-driver
H-bridge 5
Pre-driver
Position
Logic
Current
Sense 1
Current
Sense 7
Current
Sense 3
Current
Sense 4
H-bridge 2
Pre-driver
Current
Sense 2
Srial
Controller
UVLO
TSD
Cautions 1. Be sure to connect all of the pins which have more than one.
2. A pull-down resistor (50 to 200 kΩ) is connected to the TEST, IN5A, IN5B, IN6A, IN6B, IN7A and IN7B
pins.
Fix these input pins to GND when they are not used.
Data Sheet S16423EJ2V0DS
6
µ
PD168113
4. STANDARD CONNECTION EXAMPLES
(1) For external control of only ch7 when external CLK is input and two stepping motors are used
3 to 5 V
M
OUT
3A
V
M34
OUT
3B
PGND
34
OUT
4A
V
M34
OUT
4B
V
DD
OUT
2B
V
M12
V
M12
OUT
2A
OUT
1B
V
M6
OUT
1A
PGND
12
CLKBCLKLGND
3 V
OUT
6B
V
M7
OUT
6A
OUT
7B
OUT
7A
PGND
7
PGND
7
OUT
5B
V
M5
OUT
5A
PGND
56
LATCH
SCLK
S D ATA
RESETB COSC
330 pF
2
Current
Sense 7
Current
Sense 4
Current
Sense 3
Current
Sense 1
Current
Sense 2
ch4
H-bridge
ch3
H-bridge
ch6
H-bridge
ch7
H-bridge
OSC
TEST
FB
1
FIL
1
FIL
2
FB
2
EXT
1
EXT
2
MOB
1
MOB
2
IN
7B
IN
7A
IN
6A
IN
6B
IN
5A
IN
5B
FIL
4
FIL
3
FB
3
FB
4
FB
7
Pre-driver
TSD
UVLO
Serial Control
Block
CPU
ch1
H-bridge
ch2
H-bridge
ch5
H-bridge
M
M
M
(2) For external control of ch5 to ch7 when crystal oscillator and one stepping motor are used
3 to 5 V
M
M
OUT
3A
V
M34
OUT
3B
PGND
34
OUT
4A
V
M34
OUT
4B
V
DD
OUT
2B
V
M12
V
M12
OUT
2A
OUT
1B
V
M6
OUT
1A
PGND
12
CLKBCLKLGND
3 V
OUT
6B
V
M7
OUT
6A
OUT
7B
OUT
7A
PGND
7
PGND
7
OUT
5B
V
M5
OUT
5A
PGND
56
LATCH
SCLK
S D ATA
RESETB COSC
330 pF
6
Current
Sense 7
Current
Sense 4
Current
Sense 3
Current
Sense 1
Current
Sense 2
ch4
H-bridge
ch3
H-bridge
ch6
H-bridge
ch7
H-bridge
OSC
TEST
FB
1
FIL
1
FIL
2
FB
2
EXT
1
EXT
2
MOB
1
MOB
2
IN
7B
IN
7A
IN
6A
IN
6B
IN
5A
IN
5B
FIL
4
FIL
3
FB
3
FB
4
FB
7
Pre-driver
TSD
UVLO
Serial Control
Block
CPU
ch1
H-bridge
ch2
H-bridge
ch5
H-bridge
M
M
Data Sheet S16423EJ2V0DS 7
µ
PD168113
5. FUNCTIONAL DEPLOYMENT
5.1 Serial Control
All information for driving the motor is processed by serial data from the CPU. The following parameters can be set
by commands.
• Control of DC motor driving and output duty
• Control during constant-current driving and current setting
• Wait value for setting timing during stepping motor driving
• Motor current, motor revolution direction, and output excitation mode
• Pulse cycle, and number of pulses
Each command is assigned an address. Each data can be updated by inputting 16-bit data. For the configuration of
the data and details of commands, refer to 9. SERIAL INTERFACE SPECIFICATIONS.
5.2 Reset Function
An initialization operation is performed and all the internal data is cleared to 0 when RESETB = L. The output
remains in the Hi-Z state.
When RESETB = H, commands can be input.
Once it sets the address 0 to address 2 for an initialization setting, they carry out latch operation inside, and prohibit
overwriting. In order that initialization operation is performed again, the reset operation is needed.
Be sure to perform a reset operation after turning on power supply. When RESETB = L, the internal circuitry is
stopped whenever possible, so that the self current consumption can be reduced. When input of the external CLK is
stopped, the current consumption can be lowered to 1
µ
A MAX.
Immediately after release of reset, excitation is started from the position where the current of ch1 is 100% and the
current of ch2 is 0%, in the micro step drive mode and 1-2 phase excitation drive mode. In the 2-phase excitation
drive mode, excitation is started from the position where the currents of ch1 and ch2 are 100%.
Remark L: Low level, H: High level, Hi-Z: High impedance
5.3 Current Detection Resistor Connection (FB) Pin
The current detection resistor is connected when current driving is necessary.
For example: When micro step driving, when solenoid driving.
The current that flows into the output is {set voltage value/FB pin resistance x 1000}.
Example) Where the set voltage value is 200 mV, FB = 2 kΩ
Output current value = 200 (mV) /2 (kΩ) x 1000
= 100 (mA)
Therefore, the load is driven at a constant current of 100 mA.
The set voltage value is a value that can be set by serial control.
Data Sheet S16423EJ2V0DS
8
µ
PD168113
5.4 Undervoltage Lockout (UVLO) Circuit
This function is to forcibly stop the operation of the IC to prevent malfunctioning if VDD drops.
If VDD drops abruptly in the order of several
µ
s, this function may not operate.
5.5 Overheat Protection (TSD) Circuit
This function is to forcibly stop the operation of the IC to protect it from destruction due to overheating if the chip
temperature of the IC rises.
The overheat protection circuit operates when the chip temperature rises to 150°C or more. When overheat is
detected, all the circuits are stopped. When reset is performed or when UVLO is detected, the overheat protection
circuit does not operate.
5.6 Power Up Sequence
This IC has a circuit that prevents current from flowing into the VM pin when VDD = 0 V. Therefore, the current that
flows into the VM pin is cut off when VDD = 0 V.
Because the VDD pin voltage and VM pin voltage are monitored, a current of 3
µ
A MAX. flows into the VM pin when
VDD is applied.
Data Sheet S16423EJ2V0DS 9
µ
PD168113
6. COMMAND INPUT TIMING CHART
This IC can drive a stepping motor, DC motor, and solenoid by serial control if serial control is set during initialization.
If direct input is set, this IC can drive the load by an input/output PWM control method.
With the serial control setting, two or more motors can be simultaneously controlled by commands.
Be sure to execute initialization (addresses 0 to 2) immediately after power application and immediately after reset.
After initialization, the motors can be controlled simply by inputting driving data (addresses 3 to F).
To execute initialization again from the start, the RESET pin must be made high and data of addresses 0 to 2 must
be input.
6.1 Setting Examples
6.1.1 Stepping motor
Starts output after wait time synchronized with LATCH has fallen.
LATCH
SCLK/SDATA
Pulse output
Wait time
Pulse output Pulse output
Excited status (stopped) Excited status (stopped)
6.1.2 DC motor/coil
Starts output after LATCH has fallen.
LATCH
SCLK/SDATA
Output status ON OFF OFF
ON
6.2 Example of Address Setting
LATCH
SCLK
Address 0
Initializaition
Address 0
Address 1
Address 2
Address 1 Address 2 Address 7
Constant-current driving
Address 7
Address 3
Constant-current driving
Address 3
Address 4
Address 4
SDATA
Address 5
DC motor
Address 5
Address 8 to address B
Stepping motor
Address 8 to address B
Data Sheet S16423EJ2V0DS
10
µ
PD168113
7. SERIAL DATA INPUT SEQUENCE
The
µ
PD168113 can control driving of two or more motors with only a few CPU signals by using a serial data input
method. The serial data is input as follows.
(1) Input addresses 0 to 2 after power up and initialization.
(2) Depending on the type of the motor set, input the necessary data of addresses 3 to F (two or more addresses may
be input).
(3) When performing the driving setting, only the necessary data of addresses 3 to F has to be input because the
previous data is retained.
Only the output related to the input address will change.
To perform an initialization operation such as selecting the motor, initialize the internal registers by using the
RESETB pin.
Figure 7−1. Operation Sequence When Serial Data Is Input
Motor type
Data updated ?
Stepping motor Constant-current driving
Y
N
Address 0
to
address 2
DC Motor
Address 8 to address B
or
Address C to address F
Address 5, address 6 Address 3,
address 4, address 7
Data Sheet S16423EJ2V0DS 11
µ
PD168113
8. NOTES ON TRANSMITTING DATA
• The first input data is loaded when SCLK changes from L to H after LATCH has changed from L to H.
Data is transmitted in 16-bit units, and is determined when LATCH changes from H to L. Invalid data of less than
16-bit is discarded.
• Data of different addresses can be input successively while LATCH = H.
• The access time can be shortened by updating only the necessary data after initialization has been performed.
If an address is not input, the previous value of that address is held as the data.
Examples) DC motor and constant current: The ON/OFF state is held.
Stepping motor: The excitation position is held if the excitation state is in ON.
• If the same address is input more than one while LATCH = H, the last input data is valid.
• If invalid data and correct data are input while LATCH = H, only the correct data is valid.
• If only LATCH is input, the data is not updated, and the driver holds the current status.
• If a command related to stepping motors (addresses 8 to F) is input during the “wait period” that lasts from input of
the preceding data to the start of counting, the data is ignored. A command related to the DC motor and coil
(addresses 3 to 7) is valid during the synchronization period.
• Data that is input when RESETB = L is ignored.
Data Sheet S16423EJ2V0DS
12
µ
PD168113
9. SERIAL INTERFACE SPECIFICATIONS
The internal data is determined by inputting 16-bit serial data SDATA synchronized with serial clock SCLK, and
making LATCH = L. Serial data is input from the LSB (D0) to the MSB (Df).
SDATA: When LATCH = H, data is loaded to the internal circuitry at the rising edge of SCLK, and latch
operation performed a the falling of SCLK
LATCH: Inputting SDATA is prohibited when LATCH is L. Inputting SDATA is enabled when it is H. The
internal data is determined when LATCH changes from H to L.
Because this IC generates the internal timing via the external CLK (OSCIN) its set values depend upon the
frequency of CLK.
An example where CLK = 5 MHz is given below. To input a frequency other than 5 MHz to CLK, use the following
expression. Items related to the serial register are marked .
Time: Set value = Setting example x (5/CLK [MHz] )
Frequency: Set value = Setting example x (CLK [MHz] /5)
<Data configuration>
16-bit data consists of address: 4-bit and data: 12-bit.
Four bits (Dc, Dd, De and Df) are used to set an address. Sixteen types of addresses 0 to F can be used.
Twelve bits (D0 to Db) are used to set data.
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data Address Data
Examples) Address 1: (Df, De, Dd, Dc) = (0, 0, 0, 1)
Address A: (Df, De, Dd, Dc) = (1, 0, 1, 0)
For how to set data, refer to Table 10−1. to Table 10−4. Serial Register List, and 11. SERIAL COMMAND
DETAILS.
The following chart shows an example of serial command waveforms.
0
SCLK
S D ATA
LATCH
123456789101112131415
SCLK
SDATA D0 DfFrom D1
LATCH
Data Sheet S16423EJ2V0DS 13
µ
PD168113
10. ADDRESS LIST
Address Address Data Item to Be Set
Df De Dd Dc
Address 0 0 0 0 0 Input mode selection, motor selection, wait setting
Address 1 0 0 0 1 Chopping frequency setting, MOB output selection
Address 2 0 0 1 0 Test function
Address 3 0 0 1 1 Constant current ch3
Address 4 0 1 0 0 Constant current ch4
Address 5 0 1 0 1 DC motor ch5
Address 6 0 1 1 0 DC motor ch6
Address 7 0 1 1 1 Constant current ch7
Address 8 1 0 0 0 Motor driving initialization setting, motor current setting
Address 9 1 0 0 1 Acceleration/deceleration parameter setting, plus number
multiplication factor setting
Address A 1 0 1 0 Pulse cycle setting
Address B 1 0 1 1 Number of pulses setting
Address C 1 1 0 0 Motor driving initialization setting, motor current setting
Address D 1 1 0 1 Acceleration/deceleration parameter setting, plus number
multiplication factor setting
Address E 1 1 1 0 Pulse cycle setting
Address F 1 1 1 1 Number of pulses setting
Data Sheet S16423EJ2V0DS
14
µ
PD168113
Table 10−1. Serial Register List (Address 0 to Address 3)
Bit Address 0 (0000) Bit Address 1 (0001)
f 0 f 0
e 0 e 0
d 0 d 0
c
Address
0 c
Address
1
b 0 (unused) b 0 (unused)
a 0 (unused) a 0 (unused)
9 ch7 serial/direct input mode selection 9 0 (unused)
8 ch6 serial/direct input mode selection 8 MOB output position setting (when micro step
7 ch5 serial/direct input mode selection driving or 1-2 phase excitation driving)
6 ch3, ch4 driving motor setting 7 MOB output selection setting
5 Wait setting 5 (only when micro step driving)
4 Wait setting 4 6 Pulse output function selection when EXT output
3 Wait setting 3 5 Chopping frequency 5
2 Wait setting 2 4 Chopping frequency 4
1 Wait setting 1 3 Chopping frequency 3
0 Wait setting 0 2 Chopping frequency 2
1 Chopping frequency 1
0 Chopping frequency 0
Bit Address 2 (0010) Bit Address 3 (0011)
f 0 f 0
e 0 e 0
d 1 d 1
c
Address
0 c
Address
1
b 0 (unused) b 0 (unused)
a 0 (unused) a 0 (unused)
9 0 (unused) 9 0 (unused)
8 0 (unused) 8 0 (unused)
7 0 (unused) 7 ch3 output current value setting 4
6 0 (unused) 6 ch3 output current value setting 3
5 0 (unused) 5 ch3 output current value setting 2
4 0 (unused) 4 ch3 output current value setting 1
3 0 (unused) 3 ch3 output current value setting 0
2 0 (unused) 2 0 (unused)
1 0 (unused) 1 ch3 excitation direction
0 0 (unused) 0 ch3 excitation ON/OFF
Data Sheet S16423EJ2V0DS 15
µ
PD168113
Table 10−2. Serial Register List (Address 4 to Address 7)
Bit Address 4 (0100) Bit Address 5 (0101)
f 0 f 0
e 1 e 1
d 0 d 0
c
Address
0 c
Address
1
b 0 (unused) b 0 (unused)
a 0 (unused) a 0 (unused)
9 0 (unused) 9 0 (unused)
8 0 (unused) 8 0 (unused)
7 ch4 output current value setting 4 7 ch5 output duty setting 4
6 ch4 output current value setting 3 6 ch5 output duty setting 3
5 ch4 output current value setting 2 5 ch5 output duty setting 2
4 ch4 output current value setting 1 4 ch5 output duty setting 1
3 ch4 output current value setting 0 3 ch5 output duty setting 0
2 0 (unused) 2 ch5 brake mode
1 ch4 excitation direction 1 ch5 revolution direction
0 ch4 excitation ON/OFF 0 ch5 motor ON/OFF
Bit Address 6 (0110) Bit Address 7 (0111)
f 0 f 0
e 1 e 1
d 1 d 1
c
Address
0 c
Address
1
b 0 (unused) b 0 (unused)
a 0 (unused) a 0 (unused)
9 0 (unused) 9 0 (unused)
8 0 (unused) 8 0 (unused)
7 ch6 output duty setting 4 7 ch7 output current value setting 4
6 ch6 output duty setting 3 6 ch7 output current value setting 3
5 ch6 output duty setting 2 5 ch7 output current value setting 2
4 ch6 output duty setting 1 4 ch7 output current value setting 1
3 ch6 output duty setting 0 3 ch7 output current value setting 0
2 ch6 brake mode 2 0 (unused)
1 ch6 revolution direction 1 ch7 excitation direction
0 ch6 motor ON/OFF 0 ch7 excitation ON/OFF
Data Sheet S16423EJ2V0DS
16
µ
PD168113
Table 10−3. Serial Register List (Address 8 to Address B)
Bit Address 8 (1000) Bit Address 9 (1001)
f 1 f 1
e 0 e 0
d 0 d 0
c
Address
0 c
Address
1
b 0 (unused) b 0 (unused)
a Constant-current changing when two-phase/1-2 a Acceleration valid/invalid change
phase driving 9 Deceleration valid/invalid change
9 Driving mode selection 1 8 For acceleration/deceleration control
8 Driving mode selection 0 7 For acceleration/deceleration control
7 Output enable setting 6 For acceleration/deceleration control
6 Stop mode setting 5 For acceleration/deceleration control
5 Revolution direction mode (CW/CCW) 4 For acceleration/deceleration control
4 Motor current setting 4 3 For acceleration/deceleration control
3 Motor current setting 3 2 For acceleration/deceleration control
2 Motor current setting 2 1 Motor pulse multiplication factor setting 1
1 Motor current setting 1 0 Motor pulse multiplication factor setting 0
0 Motor current setting 0
Bit Address A (1010) Bit Address B (1011)
f 1 f 1
e 0 e 0
d 1 d 1
c
Address
0 c
Address
1
b Motor pulse cycle setting 11 b Number of motor pulses setting 11
a Motor pulse cycle setting 10 a Number of motor pulses setting 10
9 Motor pulse cycle setting 9 9 Number of motor pulses setting 9
8 Motor pulse cycle setting 8 8 Number of motor pulses setting 8
7 Motor pulse cycle setting 7 7 Number of motor pulses setting 7
6 Motor pulse cycle setting 6 6 Number of motor pulses setting 6
5 Motor pulse cycle setting 5 5 Number of motor pulses setting 5
4 Motor pulse cycle setting 4 4 Number of motor pulses setting 4
3 Motor pulse cycle setting 3 3 Number of motor pulses setting 3
2 Motor pulse cycle setting 2 2 Number of motor pulses setting 2
1 Motor pulse cycle setting 1 1 Number of motor pulses setting 1
0 Motor pulse cycle setting 0 0 Number of motor pulses setting 0
Data Sheet S16423EJ2V0DS 17
µ
PD168113
Table 10−4. Serial Register List (Address C to Address F)
Bit Address C (1100) Bit Address D (1101)
f 1 f 1
e 1 e 1
d 0 d 0
c
Address
0 c
Address
1
b 0 (unused) b 0 (unused)
a Constant-current changing when two-phase/1-2 a Acceleration valid/invalid change
phase driving 9 Deceleration valid/invalid change
9 Driving mode selection 1 8 For acceleration/deceleration control
8 Driving mode selection 0 7 For acceleration/deceleration control
7 Output enable setting 6 For acceleration/deceleration control
6 Stop mode setting 5 For acceleration/deceleration control
5 Revolution direction mode (CW/CCW) 4 For acceleration/deceleration control
4 Motor current setting 4 3 For acceleration/deceleration control
3 Motor current setting 3 2 For acceleration/deceleration control
2 Motor current setting 2 1 Motor pulse multiplication factor setting 1
1 Motor current setting 1 0 Motor pulse multiplication factor setting 0
0 Motor current setting 0
Bit Address E (1110) Bit Address F (1111)
f 1 f 1
e 1 e 1
d 1 d 1
c
Address
0 c
Address
1
b Motor pulse cycle setting 11 b Number of motor pulses setting 11
a Motor pulse cycle setting 10 a Number of motor pulses setting 10
9 Motor pulse cycle setting 9 9 Number of motor pulses setting 9
8 Motor pulse cycle setting 8 8 Number of motor pulses setting 8
7 Motor pulse cycle setting 7 7 Number of motor pulses setting 7
6 Motor pulse cycle setting 6 6 Number of motor pulses setting 6
5 Motor pulse cycle setting 5 5 Number of motor pulses setting 5
4 Motor pulse cycle setting 4 4 Number of motor pulses setting 4
3 Motor pulse cycle setting 3 3 Number of motor pulses setting 3
2 Motor pulse cycle setting 2 2 Number of motor pulses setting 2
1 Motor pulse cycle setting 1 1 Number of motor pulses setting 1
0 Motor pulse cycle setting 0 0 Number of motor pulses setting 0
Data Sheet S16423EJ2V0DS
18
µ
PD168113
11. SERIAL COMMAND DETAILS
11.1 Address 0
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 0 0 0 0 0 0 Note 4 Note 3 Note 2 Note 1 Wait setting
Notes 1. ch3, ch4 driving motor setting 3. ch6 serial/direct input mode selection
2. ch5 serial/direct input mode selection 4. ch7 serial/direct input mode selection
11.1.1 Wait value
When the stepping motor is to be controlled, counting is started from the falling of the LATCH signal and the motor is
excited when the count value reaches 0. Even if transmission of serial data is delayed by the wait value, the stepping
motor can be driven at a predetermined timing if the LATCH signal is periodically input.
Note that the wait value must not be set to 0. The wait time can be set in a range of 64 to 2048
µ
s with a resolution
of 32
µ
s using data.
11.1.2 Example of setting wait value
D5......D0 Set Value (
µ
s)
000000 Input prohibited
000001 64
000010 96
: :
111101 1984
111110 2016
111111 2048
11.1.3 Definition by wait value
LATCH
Wait period
Wait 1
Wait 2
Driving mode
(microstep,
1-2 phase,
two-phase)
Driving mode
(when two-phase driving
immediately after reset)
Pulse output
Output disableOutput enable
EVR
(output current setting)
Fixed to
32 s
µ
Set value: −32 s
µ
Data Sheet S16423EJ2V0DS 19
µ
PD168113
11.1.4 ch3, ch4 driving motor setting
D6 = 0: Stepping motor driving
D6 = 1: Constant-current driving mode that can be set only by serial mode.
When D6 = 0, ch3 and ch4 have functions equivalent to ch1 and ch2, and can be used to drive a stepping motor.
When D6 = 1, ch3 and ch4 are independently used for constant-current driving. However, because ch3 and ch4
internally share the same driving power supply, these channels must be supplied from the same source.
11.1.5 ch5 to ch7 serial/direct input mode selection
<ch5 serial/direct input mode selection>
D7 = 0: ch5 is a setting mode by serial mode
D7 = 1: ch5 is a setting mode by direct input mode
<ch6 serial/direct input mode selection>
D8 = 0: ch6 is a setting mode by serial mode
D8 = 1: ch6 is a setting mode by direct input mode
<ch7 serial/direct input mode selection>
D9 = 0: ch7 is a setting mode by serial mode
D9 = 1: ch7 is a setting mode by direct input mode
If each or all of ch5 to ch7 is setting mode by direct input mode, refer to 13. FUNCTION OPERATION TABLE.
Data Sheet S16423EJ2V0DS
20
µ
PD168113
11.2 Address 1
This address is used to set a chopping frequency that is the reference of PWM output.
MSB LSB
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 0 0 0 1 0 0 0 Note 3Note 2Note 1 Chopping frequency
Notes 1. Pulse output function selection when EXT output
2. MOB output selection setting
3. MOB output position setting
11.2.1 Chopping frequency
A chopping mode is employed for the output to drive the motor on a constant current.
The chopping frequency that is the reference of the output can be changed with data, so that the PWM output does
not interfere with the other signals.
The chopping frequency can be set in a range of 40 to 250 kHz by the data of D0 to D5.
The set chopping frequency is used for output when executing stepping motor and constant-current driving.
<Output in accordance with set chopping frequency>
• For constant-current driving with stepping motor (ch1 to ch4)
• For constant-current driving (ch3, ch4, ch7)
Refer to the following table for the set value.
D5......D0 Chopping Frequency (kHz) D5......D0 Chopping Frequency (kHz) D5......D0 Chopping Frequency (kHz)
000000 0 (no pulse output) 011000 120 101100 225
000001 0 (no pulse output) 011001 125 101101
: : 011010 130 101110
000111 0 (no pulse output) 011011 101111
001000 40 011100 140 110000 250
001001 45 011101 145 110001
001010 50 011110 110010
001011 55 011111 155 110011
001100 60 100000 110100
001101 65 100001 165 110101
001110 70 100010 110110
001111 75 100011 180 110111
010000 80 100100 111000
010001 85 100101 111001
010010 90 100110 190 111010
010011 95 100111 111011
010100 10 101000 111100
010101 105 101001 210 111101
010110 110 101010 111110
010111 115 101011 111111
Data Sheet S16423EJ2V0DS 21
µ
PD168113
11.2.2 Pulse output function selection when EXT output
If D6 is set, the function which acts as the monitor of the output state of the driving pulse by the EXT pin can be
selected.
When D6 = 0,
EXT1: Output pulse synchronization mode of the micro step output 1
EXT2: Output pulse synchronization mode of the micro step output 2
When D6 = 1,
EXT1: Mode with output time of micro step output 1 fixed to H
EXT2: Mode with output time of micro step output 2 fixed to H
The output synchronization mode is duty 50% TYP. in accordance with the pulse frequency setting.
To count the number of pulses, count the rising edges.
11.2.3 Restrictions in pulse output synchronization mode
(1) Output is not guaranteed if the pulse period is 2
µ
s (Db to D0: 000000000001).
(2) Output is equivalent to the H time during steady-state driving (equivalent to pulse period setting) while an
acceleration/deceleration operation is performed.
(3) If the multiplication factor of the number of pulses is set to other than 1, the set number of pulses (address 5 x m)
is output.
11.2.4 Restrictions in mode in which output time is fixed to H
The output falls in synchronization with the falling of the pulse that is to be output at the same timing in the pulse
output synchronization mode.
When the last pulse is output , therefore, it rises earlier than the period of the pulse cycle (50% of pulse cycle or less)
Data Sheet S16423EJ2V0DS
22
µ
PD168113
11.2.5 MOB output selection setting (only when micro step driving)
The output function of MOB can be selected by D7. It becomes effective only when the micro step driving mode
selected.
D7 = 0: MOB is output once per cycle.
D7 = 1: MOB is output four times per cycle.
For the output position of MOB, refer to 11.2.6 MOB output position setting (set by D8).
D7 MOB Output
0 1 pulse/cycle
1 4 pulses/cycle
11.2.6 MOB output position setting (when micro step driving or 1-2 phase excitation driving)
The MOB output timing position can be selected by D8. It becomes effective when the micro step driving mode or
the 1-2 phase excitation driving mode selected.
D8 = 0: MOB is output at the one-phase excitation position (where the current of ch1 or ch2 is 100%) .
D8 = 1: MOB is output at the two-phase excitation position (where the currents of ch1 and ch2 are the same) .
Selection of MOB output (D7) is made in accordance with the setting of D8.
When D8 = 1, no signal is output from the MOB pin immediately after reset. In addition, MOB1 and MOB2 cannot be
set individually.
D8 MOB Output Position
0 one-phase excitation position
1 two-phase excitation position
Data Sheet S16423EJ2V0DS 23
µ
PD168113
11.2.7 MOB output timing chart
Figure 11−1. MOB Output Timing Chart When Micro Step Driving
MOB output
D7 = 0
D7 = 1
MOB output
0 5 10 20 25 30 35 40 45 50 55 60 65
0 5 10 20 25 30 35 40 45 50 55 60 65
−99.5
99.5
−95.7
95.7
100
98.1
92.4
−92.4
−98.1
−100
−88.2
88.2
−83.1
83.1
−77.3
77.3
−70.7
70.7
−63.4
63.4
−55.6
55.6
−47.1
47.1
−38.3
38.3
−29.0
29.0
−19.5
19.5
−9.8
9.8
0
−99.5
99.5
−95.7
95.7
100
98.1
92.4
−92.4
−98.1
−100
−88.2
88.2
−83.1
83.1
−77.3
77.3
−70.7
70.7
−63.4
63.4
−55.6
55.6
−47.1
47.1
−38.3
38.3
−29.0
29.0
−19.5
19.5
−9.8
9.8
0
ch2 current
ch1 current
RESET position
0 5 10 20 25 30 35 40 45 50 55 60 65
0 5 10 20 25 30 35 40 45 50 55 60 65
15
15
15
15
Data Sheet S16423EJ2V0DS
24
µ
PD168113
11.3 Address 2
This address is used as the test function for internal of the IC.
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 0 0 1 0 (Test function)
<Test function>
The test function is used to check the internal operations of the IC. Be sure to input the data of D0 to Db when
usually using.
Data Sheet S16423EJ2V0DS 25
µ
PD168113
11.4 Address 3, Address 4 and Address 7
These addresses set constant-current driving.
Address 3
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 0 0 1 1 0 0 0 0 ch3 output current value setting 0 Note 2 Note 1
Address 4
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 0 1 0 0 0 0 0 0 ch4 output current value setting 0 Note 2 Note 1
Address 7
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 0 1 1 1 0 0 0 0 ch7 output current value setting 0 Note 2 Note 1
Notes 1. Excitation ON/OFF
2. Excitation direction
11.4.1 Excitation ON/OFF
D0 selects whether the coil is to be driven.
D0 = 0: The output goes into a Hi-Z state.
D0 = 1: The output is turned ON, and the coil is driven in accordance with the revolution direction and the output
current value setting.
D0 Driving Mode
0 Hi-Z
1 Output ON
11.4.2 Excitation direction
D1 selects the direction in which the coil is to be excited.
In the forward direction, the current flows from phase A to B. In the reverse direction, the current flows from phase B
to A.
D1 Operation Mode
0 Current direction A → B (forward direction)
1 Current direction B → A (reverse direction)
Data Sheet S16423EJ2V0DS
26
µ
PD168113
11.4.3 Output current value setting
Data of D3 to D7 sets the current value for constant-current control. These bits select the internal voltage that serves
as a reference with a resolution of 20 mV. The current that flows to the output is { set voltage value/FB x 1000 } .
A voltage lower than 100 mV is fixed to 100 mV, and a voltage exceeding 500 mV is fixed to 500 mV. Therefore, the
reference voltage can be set in a range of 100 to 500 mV. The operation frequency of the output is the frequency
oscillation by the oscillator connected to COSC (100 kHz TYP.).
Example)
The set output current is calculated as follows where FB = 2 kΩ for constant-current driving at 100 mA.
Set voltage value = 100 (mA) x 2 (kΩ) /1000 = 200 (mV) → (D7......D3) = (01010)
D7......D3 Reference Voltage (mV) D7......D3 Reference Voltage (mV)
00000 100 10110 440
00001 100 10111 460
: : 11000 480
00101 100 11001 500
00110 120 : :
00111 140 11110 500
: : 11111 500
Data Sheet S16423EJ2V0DS 27
µ
PD168113
11.5 Address 5 and Address 6
These addresses specify how a DC motor is to be driven.
Address 5
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 0 1 0 1 0 0 0 0 ch5 output duty setting Note 3 Note 2 Note 1
Address 6
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 0 1 1 0 0 0 0 0 ch6 output duty setting Note 3 Note 2 Note 1
Notes 1. Motor ON/OFF
2. Revolution direction
3. Brake mode
11.5.1 Motor ON/OFF
D0 specifies whether the motor is to be driven.
D0 = 0: The motor is stopped (stop mode) .
The output status in the stop mode is Hi-Z or short brake mode, depending on the value of D2, which selects a brake
mode.
D0 = 1: The start mode is selected, and the motor is driven in accordance with the revolution direction and the output
duty setting.
D0 Driving Mode
0 Stop mode
1 Start mode
11.5.2 Revolution direction
D1 selects the revolution direction of the motor.
In the forward direction, the current flows from phase A to B. In the reverse direction, the current flows from phase B
to A.
D1 Operation Mode
0 Current direction A → B (forward direction)
1 Current direction B → A (reverse direction)
Data Sheet S16423EJ2V0DS
28
µ
PD168113
11.5.3 Brake mode
D2 is used to select the output status in the stop mode.
D2 = 0: The output goes into a Hi-Z state.
D2 = 1: The high side of both phase A and B is ON, and the short brake status is selected. At this time, the output
goes H.
D2 Operation Mode
0 Hi-Z
1 Short brake (both phases A and B output H)
11.5.4 Output duty setting
The output duty for current control is selected, and can be selected in 32 steps by data of D3 to D7.
The operation frequency of the output is set by counting the external CLK.
Operation frequency = 1/ (200 ns x 32) = 156.25 kHz (at 5 MHz)
D7......D3 Output Duty (%) D7......D3 Output Duty (%)
00000 100 10000 50
00001 3.125 10001 53.125
00010 6.25 10010 56.25
00011 9.375 : :
: : 11110 93.75
01111 46.875 11111 96.875
Caution When all of D3 to D7 is 0, the output duty is 100%. Be sure to use the stop mode when the output
duty is 0%.
Data Sheet S16423EJ2V0DS 29
µ
PD168113
11.6 Address 8
This address selects basic-operation setting of stepping motor (the maximum current value, the revolution direction
of the motor and the operation mode).
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 1 0 0 0 0 Note 6 Note 5 Note 4 Note 3 Note 2 Note 1 Output current setting
Notes 1. Motor revolution direction 4. Driving mode selection 0
2. Stop mode 5. Driving mode selection 1
3. Output enable setting 6. Constant-current changing when two-phase excitation
driving or 1-2 phase excitation driving
11.6.1 Output current setting
An internal reference voltage value (EVRMAX) for constant-current driving is set. The internal reference voltage is
specified by data of D0 to D4 at a resolution of 20 mV. Micro step driving can be performed with the set reference
voltage as the maximum value. The peak value of the drive current is EVRMAX (V) /FB (Ω) x 1000.
Set value: EVRMAX = (D4......D0) x 20 mV
However, 100 mV ≤ EVRMAX ≤ 500 mV
D4......D0 Reference Voltage (mV) D4......D0 Reference Voltage (mV)
00000 100 10110 440
00001 100 10111 460
: : 11000 480
00101 100 11001 500
00110 120 : :
00111 140 11110 500
: : 11111 500
Remark If a voltage less than 100 mV is set, the reference voltage is fixed to 100 mV. If a voltage higher than 500
mV is set, it is fixed to 500 mV.
Data Sheet S16423EJ2V0DS
30
µ
PD168113
11.6.2 Motor revolution direction setting
D5 is used to specify the motor revolution direction.
In the CW mode, the current of ch2 (ch4 in the case of address C) is output, 90° degrees in phase behind the current
of ch1 (ch3 in the case of address C).
In the CCW mode, the current of ch2 (ch4 in the case of address C) is output, 90° ahead in phase behind the current
of ch1 (ch3 in the case of address C).
D5 Operation Mode
0 CW mode (forward revolution)
1 CCW mode (reverse revolution)
11.6.3 Stop mode setting
When D6 = 1, the motor advances to the position of MOB1 output = L, and the output status is held.
The set number of pulses is held even in the stop mode.
Because the motor is driven regardless of the set number of pulses, however, the position information of the motor
must be taken into consideration when a command is set to resume driving.
D6 Operation Mode
0 Normal mode
1 Stop mode
Caution Inputting data is prohibited while the stop mode is set (MOB1 reaches L). Do not update the data.
No pulse is output if the stop mode is set while MOB1 = L
In addition, MOB2 is output in the case of address C.
11.6.4 Output enable setting
D7 = 1: The motor can be driven. To drive the motor, be sure to set this bit to 1.
D7 = 0: The output goes into a Hi-Z state, regardless of the other settings.
If D7 is changed from 0 to 1, the internal information is held and therefore the excitation position is recorded.
Therefore, excitation is started from the position where D7 is cleared to 0.
D7 Operation Mode
0 Output Hi-Z
1 Enable mode
Data Sheet S16423EJ2V0DS 31
µ
PD168113
11.6.5 Driving mode selection 0 and driving mode selection 1
D8 and D9 can be used to select driving mode of two-phase excitation, 1-2 phase excitation and micro step.
D8 = 0: The micro step driving mode is selected.
D8 = 1, D9 = 0: The two-phase excitation driving mode is selected.
D8 = 1, D9 = 1: The 1-2 phase excitation driving mode is selected.
Immediately after rest, The micro step driving mode is selected.
When changing the driving mode from micro step to two-phase excitation or 1-2 phase excitation, note the following
points.
<If the number of pulses is set to 0>
The stop position when the constant current is changed may differ depending on Da, which selects a constant
current in the two-phase or 1-2 phase excitation mode.
When Da = 0, the execution jumps to the two-phase or 1-2 phase position on the quadrant at the excitation position
after completion of wait, and the motor is excited at a duty factor of 100%. When Da = 1, the stop position is excited
and held.
<If pulse output is started by command setting to set a number of pulses of 1 or more>
At the first pulse, the operation skips to the two-phase excitation position or the1-2 phase excitation position of the
next quadrant and driving is started.
If the two-phase excitation driving mode is changed while the motor is stopped at the one-phase excitation position, it
is judged that the position is included in the quadrant in the CW direction, and motor operates.
Refer to Figure11−3. Transition of Switching of Micro Step Driving ÅÆ 1-2 Phase Excitation ÅÆ 2-phase
Excitation (If Number of Pulses Is Set to 1 for Switching) for details.
D8 D9 Operation Mode
Figure 11−2. Concept of Changing Driving Mode
0 0 Micro step driving from Micro Step to Two-phase Excitation
0 1
1 0 Two-phase excitation driving
1 1 1-2 phase excitation driving
Microstep stop
position (example 1)
Microstep stop
position (example 2)
2-phase excitation
stop position
Skipes to the next
quadrant
(4)
(3) (2)
(1)
Data Sheet S16423EJ2V0DS
32
µ
PD168113
Figure 11−3. Transition of Switching of Micro Step Driving ÅÆ 1-2 Phase Excitation ÅÆ 2-phase Excitation
(If Number of Pulses Is Set to 1 for Switching)
Driving mode
Micro step
1-2 phase
excitation
two-phase
excitation
1-2 phase
excitation
Micro step
two-phase
excitation
1st quadrant 2nd quadrant 3rd quadrant 4th quadrant
0 1 to 7 8 9 to 15 16 17 to 23 24 25 to 31 32 33 to 39 40 41 to 47 48 49 to 55 56 57 to 63
11.6.6 Constant-current changing when two-phase excitation/1-2 phase excitation
Da is used to select whether the motor is driven at an output duty of 100% (maximum torque operation) or under
constant-current control when the two-phase excitation driving or the 1-2 phase excitation driving is selected.
When Da = 0, the motor is driven at an output duty of 100%. It is excited in two-phase or 1-2 phase and driven at the
maximum torque regardless of the current setting.
When Da = 1, the motor is excited in two-phase or 1-2 phase at the motor current setting. The output current value
is controlled to be the same value as the driving current at the phase A = phase B position (position of step
θ
8) in the
micro step driving mode.
Da Operation Mode
0 Output duty 100% drive
1 Constant-current control drive
Examples of the motor current waveform is shown 12. STEPPING MOTOR DRIVING WAVEFORM.
Data Sheet S16423EJ2V0DS 33
µ
PD168113
11.7 Address 9
This address is used to set parameters for acceleration/deceleration control, the pulse multiplication factor.
By setting the parameters for acceleration/deceleration control, the pulse cycle can be gradually changed while the
motor is accelerated or decelerated, so that step out of the motor can prevent.
By setting the pulse number multiplication factor to a value other than 1, the number of pulses can be extended in
combination with the number of pulses set by address B. If the default value is not changed, the motor is driven
without being accelerated or decelerated, and under the condition that the pulse number multiplication factor is 1.
MSB LSB MSB LSB
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 1 0 0 1 0 Note 2 Note 1 For acceleration/deceleration control Pulse
multiplication
factor setting
Notes 1. Selects whether deceleration is valid or invalid
2. Selects whether acceleration is valid or invalid
11.7.1 Pulse number multiplication factor
D1 and D0 are used to set the pulse number multiplication factor.
By setting a multiplication factor, if the number of motor pulses set at address B is insufficient, the number of pulses
can be extended maintaining 64 steps/cycle.
D1 D0 Pulse Number Multiplication Factor m
0 0 m = 1
0 1
1 0 m = 2
1 1 m = 4
Data Sheet S16423EJ2V0DS
34
µ
PD168113
11.7.2 For acceleration/deceleration control
Seven bits, D2 to D8, are used to set a driving profile for acceleration/deceleration.
The pulse rate vs. time draws an S-shaped curve. The shape of this S-curve can be changed according to the
values set to D2 to D7.
The image of the operation during acceleration or deceleration is shown below.
94 pulses Note each are necessary for acceleration and deceleration.
Usually, therefore, set 188 pulses Note or more (acceleration pulses + deceleration pulses) to perform acceleration and
deceleration. If the set number of pulses is less than 94 Note during acceleration or deceleration, refer to 11.7.10
Example of acceleration/deceleration operation.
Pulse rate at constant velacity
(address A)
Deceleration
(= mirror of
acceleration)
Pulse width at startup
Acceleration time
(Sum of step 1 to step 15)
Deceleration time
(= acceleration time)
Pulse rate
Acceleration pulse number or deceleration pulse number: 94 pulses Note
Note The number of pulses when startup time setting is one time is shown. If the startup time setting is two times
and four times, the number of pulses is 188 pulses and 376 pulses. It is twice further the number of the pulses
in acceleration/deceleration operation, and it is 376 pulses and 752 pulses.
Data Sheet S16423EJ2V0DS 35
µ
PD168113
11.7.3 Parameter for acceleration/deceleration control
Reference increment = pulse cycle (address A) /reference increment setting
Pulse cycle of each step = pulse cycle (address A) + reference increment x pulse cycle increment table
Time of each step = pulse cycle of each step x selected data table (number of pulses)
Table 11−1. Selected Data Table List
Table STEP
1
STEP
2
STEP
3
STEP
4
STEP
5
STEP
6
STEP
7
STEP
8
STEP
9
STEP
10
STEP
11
STEP
12
STEP
13
STEP
14
STEP
15
1 2 5 2 1 1 1 1 1 1 1 2 3 11 31 31
2 1 4 4 3 2 2 2 2 2 2 4 6 12 17 31
3 1 3 3 4 3 4 3 3 3 3 5 9 13 15 22
Total: 94 pulses
Table 11−2. Pulse Cycle Increment Table List
STEP
1
STEP
2
STEP
3
STEP
4
STEP
5
STEP
6
STEP
7
STEP
8
STEP
9
STEP
10
STEP
11
STEP
12
STEP
13
STEP
14
STEP
15
120 56 35 24 18 13 10 8 7 6 5 4 3 2 1
Example) Driving time at each step in case of table 1
STEP 1 (Pulse cycle + reference increment x 120) x 2
STEP 2 (Pulse cycle + reference increment x 56) x 5
STEP 3 (Pulse cycle + reference increment x 35) x 2
STEP 4 (Pulse cycle + reference increment x 24) x 1
STEP 5 (Pulse cycle + reference increment x 18) x 1
STEP 6 (Pulse cycle + reference increment x 13) x 1
STEP 7 (Pulse cycle + reference increment x 10) x 1
STEP 8 (Pulse cycle + reference increment x 8) x 1
STEP 9 (Pulse cycle + reference increment x 7) x 1
STEP 10 (Pulse cycle + reference increment x 6) x 1
STEP 11 (Pulse cycle + reference increment x 5) x 2
STEP 12 (Pulse cycle + reference increment x 4) x 3
STEP13 (Pulse cycle + reference increment x 3) x 11
STEP 14 (Pulse cycle + reference increment x 2) x 31
STEP 15 (Pulse cycle + reference increment x 1) x 31
Remark The number of an end indicates the number of pulses in the case of table 1. To use table 2 or table 3, refer
to Table 11−1. Selected Data Table List.
Acceleration time = deceleration time = sum of STEP 1 to STEP 15
Data Sheet S16423EJ2V0DS
36
µ
PD168113
11.7.4 Reference increment setting
D2 to D4 are sued to set a parameter that determines the pulse cycle at each step.
The reference increment is the pulse frequency set by address A that is divided by the reference increment setting.
So that the speed changes draw a typical S-shape curve, it is recommended to set a value of 8 ( (D4, D3, D2) = (1,
0, 0) ) .
Reference increment = pulse cycle (address A) /reference increment setting
D4 D3 D2 Reference Increment Setting
0 0 0 2
0 0 1
0 1 0
0 1 1 4
1 0 0 8
1 0 1 16
1 1 0 32
1 1 1
11.7.5 Table selection
This IC approximates the speed change curve during acceleration/deceleration operation to the shape S.
The speed change curve can be changed by selecting an internal table.
Table 1: S curve with abrupt speed change
Table 2: S curve with gentle speed change
Table 3: S curve with linear speed change (equivalent to trapezoid waveform)
D6 D5 Table Selection
0 0 Table 1
0 1
1 0 Table 2
1 1 Table 3
Data Sheet S16423EJ2V0DS 37
µ
PD168113
11.7.6 Start time setting
D7 and D8 are used to select the operation time multiplication factor during an acceleration/deceleration operation.
The number of pulses necessary for each step during acceleration/deceleration can be selected from x 1, x 2 and x
4. For the number of pulses at each step, refer to Table 11−1. Selected Data Table List.
D8 D7 Startup Time Setting Number of Pulses Necessary for
Acceleration or Deceleration
0 0 x 1 94
0 1
1 0 x 2 188
1 1 x 4 376
11.7.7 Selects whether acceleration is valid or invalid
An acceleration operation can be performed in accordance with the acceleration control setting. The acceleration
function can be valid or invalid by Da.
11.7.8 Selects whether deceleration is valid or invalid
An deceleration operation can be performed in accordance with the deceleration control setting. The deceleration
function can be valid or invalid by D9.
Da D9 Operation Mode
Acceleration Deceleration
0 0 Invalid Invalid
1 0 Valid Invalid
0 1 Invalid Valid
1 1 Valid Valid
11.7.9 Example of recommended setting
The following values are recommended for the parameters for acceleration and deceleration.
Note, however, that the characteristics differ depending on the motor to be used. Be sure to evaluate and confirm
the values with the motor to be actually used, and set the parameters correctly.
Reference increment setting: 8 ( (D4, D3, D2) = (1, 0, 0) )
Table selection: Table 1 ( (D6, D5) = (0, 0) )
Start time setting: x 1 ( (D8, D7) = (0, 0) )
Acceleration/deceleration valid/invalid: Acceleration/deceleration valid ( (Da, D9) = (1, 1) )
Data Sheet S16423EJ2V0DS
38
µ
PD168113
11.7.10 Example of acceleration/deceleration operation
(1) Acceleration valid/deceleration valid
Set pulses
Acceleration/
deceleration pulses
Pulses/s
(2) Acceleration valid/deceleration invalid
Pulses/s
(3) Acceleration invalid/deceleration invalid
Pulses/s
(4) Acceleration invalid/deceleration valid
Pulses/s
(1’) Acceleration valid/deceleration valid
Note1
Set pulses
Condition: Set pulses/2 < acceleration/deceleration pulses
Pulses/s
(2’) Acceleration valid/deceleration invalid
Note2
Condition: Set pulses < acceleration/deceleration pulses
Pulses/s
(4’) Acceleration invalid/deceleration valid
Note3
Condition: Set pulses < acceleration/deceleration pulses
Pulses/s
The left side figures in upper figures show the ideal operation waveform. If the number of set pulses is less than the
number of acceleration/deceleration control pulses, the operation as the right side figures in upper figures.
Notes 1. The deceleration operation is stared when 1/2 of the set number of pulses has been reached during the
acceleration operation. Therefore, acceleration and deceleration are always mirrored.
2. If the set number of pulses is less than the number of acceleration/deceleration control pulses during only
the acceleration operation, the operation is stopped at the pulse rate in the middle of acceleration.
3. If the set number of pulses is less than the number of acceleration/deceleration control pulses during only
the deceleration operation, the last pulse rate does not reach the target value. The set number of pulses is
output in accordance with the deceleration pulse curve, and the operation is stopped.
Data Sheet S16423EJ2V0DS 39
µ
PD168113
11.8 Address A
This address is used to set the pulse cycle per step (64 steps/cycle) .
MSB LSB
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 1 0 1 0 Pulse cycle
11.8.1 Pulse cycle
Twelve bits, D0 to Db, are used to set the pulse cycle per step.
The pulse cycle can be set in a range of 0 to 8190
µ
s at a resolution of 2.0
µ
s.
If all of the twelve-bit is 0, no pulse is output and the driving status is maintained.
The pulse period indicates the time per step regardless of the driving mode (micro step, 1-2 phase excitation, or 2-
phase excitation). Therefore, the number of revolutions of the motor differs depending on the driving mode, even if
the number of pulses is the same.
11.8.2 Example of pulse cycle setting
Db......D0 Set Value (
µ
s)
000000000000 0
000000000001 2.0
000000000010 4.0
: :
111111111101 8186
111111111110 8188
111111111111 8190
Data Sheet S16423EJ2V0DS
40
µ
PD168113
11.9 Address B
This address is used to set the number of pulses.
The actual number of pulses is set by the product to the pulse number multiplication factor and the number of pulses
sets at address 9.
MSB LSB
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 1 0 1 1 Number of pulses
11.9.1 Number of pulses
Set the number of pulses to drive the motor. D0 to Db can be set a pulse in a range of 0 to 4095 pulses.
If the pulse number multiplication factor is set to a value other than 1 at address 9, the number of pulses set here is
multiplied by the set multiplication factor (m).
The number of pulses is internally multiplied by (m) and then counted. If it is set to output pulses to EXT1 (EXT2 in
the case of address F), the number of counts output is the set value itself (0 to 4095 x m) .
The number of pulses indicates the number of pulses per pulse period regardless of the driving mode (micro step, 1-
2 phase excitation, or 2-phase excitation). Therefore, the number of revolutions of the motor differs depending on the
driving mode, even if the number of pulses is the same.
11.9.2 Example of pulse cycle setting
Db......D0 Set Value
000000000000 0
000000000001 m
000000000010 2 x m
: :
111111111101 4093 x m
111111111110 4094 x m
111111111111 4095 x m
Remark m indicates the set value of the pulse number multiplication factor of address 9. If the value of the twelve-bit,
D0 to Db, is 0, no pulse is output and the driving state is maintained.
Data Sheet S16423EJ2V0DS 41
µ
PD168113
11.10 Address C to Address F
Addresses C to F are used for setting stepping motor 2 (ch3 and ch4). The settings of other than addresses Dc, Dd,
De, and Df are identical to the contents of addresses 8 to B. For details, refer to 11.6 Address 8 to 11.9 Address B.
Address C
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 1 1 0 0 0 Note 6 Note 5 Note 4 Note 3 Note 2 Note 1 Output current setting
Notes 1. Motor revolution direction 4. Driving mode selection 0
2. Stop mode 5. Driving mode selection 1
3. Output enable setting 6. Constant-current changing when two-phase excitation
driving or 1-2 phase excitation driving
Address D
MSB LSB MSB LSB
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 1 1 0 1 0 Note 2 Note 1 For acceleration/deceleration control Pulse
multiplication
factor setting
Notes 1. Selects whether deceleration is valid or invalid
2. Selects whether acceleration is valid or invalid
Address E
MSB LSB
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 1 1 1 0 Pulse cycle
Address F
MSB LSB
Bit Df De Dd Dc Db Da D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Data 1 1 1 1 Number of pulses
Data Sheet S16423EJ2V0DS
42
µ
PD168113
12. STEPPING MOTOR DRIVING WAVEFORM
Figure 12−1. Two-phase Excitation Output Mode Figure 12−2. 1-2 Phase Excitation Output Mode
Phase A current
100%
012345678
−100%
100%
012345678
−100%
Phase B current
100%
70%
012345678
−100%
−70%
100%
70%
012345678
−100%
−70%
Phase A current
Phase B current
Remarks 1. Solid line: Output duty 100% drive, Dotted line: Current control drive (The current is in accordance with
the current setting.)
2. The horizontal axis of the above charts indicates the number of steps. The above charts show an
example in the CW (forward) mode.
The current flowing into phases A and B is positive in the direction from OUT pin A to OUT pin B, and
negative in the direction from OUT pin B to OUT pin A.
Data Sheet S16423EJ2V0DS 43
µ
PD168113
Figure 12−3. Micro Step Driving Mode
−99.5
99.5
−95.7
95.7
100
98.1
92.4
−92.4
−98.1
−100
−88.2
88.2
−83.1
83.1
−77.3
77.3
−70.7
70.7
−63.4
63.4
−55.6
55.6
−47.1
47.1
−38.3
38.3
−29.0
29.0
−19.5
19.5
−9.8
9.8
0
−99.5
99.5
−95.7
95.7
100
98.1
92.4
−92.4
−98.1
−100
−88.2
88.2
−83.1
83.1
−77.3
77.3
−70.7
70.7
−63.4
63.4
−55.6
55.6
−47.1
47.1
−38.3
38.3
−29.0
29.0
−19.5
19.5
−9.8
9.8
0
ch2 current
ch1 current
RESET
position
0 5 10 15 20 25 30 35 40 45 50 55 60 65
0 5 10 15 20 25 30 35 40 45 50 55 60 65
Remark The horizontal axis of the above charts indicates the number of steps. The above charts show an example
in the CW (forward) mode.
The current flowing into phases A and B is positive in the direction from OUT pin A to OUT pin B, and
negative in the direction from OUT pin B to OUT pin A.
Data Sheet S16423EJ2V0DS
44
µ
PD168113
13. FUNCTION OPERATION TABLE
The table below shows the input/output logic when ch5 to ch7 are set in the external control mode by initialization.
With ch7, an H-bridge current can be controlled by an external resistor for constant-current driving (output chopping
operation by PWM driving).
The external control mode is invalid immediately after reset and before an address is set.
Therefore, address setting is necessary even when the external control mode is used.
13.1 Serial Setting Contents of ch5 and ch6
Even when the external control mode is selected, the contents of the set output duty factor of ch5 (address 5) and
ch6 (address 6) are reflected. As the output duty factor of the output stage, therefore, the logical product of an
external control signal and the serial command setting is output. For the setting method by a command, refer to 11.5
Address 5 and Address 6.
13.2 Setting of ch7
ch7 is used for constant-current driving with a resistor connected to the FB pin. The current that serves as a
reference is set by a serial command. Therefore, set the current of ch7 (address 7) even when the external control
mode is selected.
For the setting method by a command, refer to 11.4 Address 3, Address 4, and Address 7.
Figure 13−1. Truth Table of ch5 to ch7
Input Output Current Direction
INA INB RESETB OUTA OUTB
L L H Hi-Z Hi-Z Stop (stop)
H L H H L OUTA → OUTB (forward)
L H H L H OUTB → OUTA (reverse)
H H H H H Brake (regenerative mode)
x x L Hi-Z Hi-Z All output stop
Remark x: Don't care
LOAD
ON
V
M
AB
OFF
OFF ON
GND
Forward
LOAD
OFF
V
M
AB
ON
ON OFF
GND
Reverse
LOAD
OFF
V
M
AB
OFF
OFF OFF
GND
Stop
LOAD
ON
V
M
AB
ON
OFF OFF
GND
Brake
Data Sheet S16423EJ2V0DS 45
µ
PD168113
14. ELECTRICAL SPECIFICATIONS
Absolute Maximum Ratings (TA = 25°C, glass epoxy board of 100 mm x 100 mm x 1 mm with copper foil area
of 15%)
Parameter Symbol Condition Rating Unit
Power supply voltage VDD Control block −0.5 to +6.0 V
VM Motor block −0.5 to +6.0 V
Input voltage VIN −0.5 to VDD +0.5 V
Output pin voltage VOUT Motor block 6.2 V
DC output current (1 ch to 6 ch) ID(DC) DC (during output independent operation) ±0.4 A/ch
DC output current (7 ch) ID(DC) DC (during output independent operation) ±0.5 A/ch
Instantaneous output current ID(pulse) PW < 10 ms, Duty Cycle ≤ 20% ±0.7 A/ch
(during output independent operation)
Power consumption PT 1.0 W
Peak junction temperature Tch(MAX) 150 °C
Storage temperature Tstg −55 to +150 °C
Remark The overheat protection circuit operates at Tch > 150°C. When overheat is detected, all the circuits are
stopped. The overheat protection circuit does not operate at reset or on detection of UVLO
Caution Product quality may suffer if the absolute maximum rating is exceeded even momentarily for any
parameter. That is, the absolute maximum ratings are rated values at which the product is on the
verge of suffering physical damage, and therefore the product must be used under conditions that
ensure that the absolute maximum ratings are not exceeded.
Recommended Operating Conditions (TA = 25°C, glass epoxy board of 100 mm x 100 mm x 1 mm with copper
foil area of 15%)
Parameter Symbol Condition MIN. TYP. MAX. Unit
Power supply voltage VDD Control block 2.7 3.6 V
VM Motor block 2.7 5.5 V
Input voltage VIN 0 VDD V
DC output current (1 ch to 6 ch) ID(DC) DC (during output independent operation) −0.3 +0.3 A/ch
DC output current (7 ch) ID(DC) DC (during output independent operation) −0.4 +0.4 A/ch
Instantaneous output current ID(pulse) PW < 10 ms, Duty Cycle ≤ 20% −0.6 +0.6 A/ch
(during output independent operation)
Capacitor capacitance COSC 330 pF
External CLK input frequency OSCIN 1 5 6 MHz
SCLK input frequency fCLK 6 MHz
LATCH - SCLK time fL-S 200 ns
SDATA setup time fSETUP 80 ns
SDATA hold time fHOLD 80 ns
EXT pin output drive current IEXT Buffer output −5 5 mA
MOB pin output sink current IMOB Open-drain output 5 mA
Logic input frequency fIN IN5A, IN5B, IN6A, IN6B, IN7A, IN7B 100 kHz
Operating temperature range TA −10 75 °C
Data Sheet S16423EJ2V0DS
46
µ
PD168113
Figure 14−1. Serial Command Timing Waveform
SCLK
SDATA D0
tSETUP = 80 ns MIN.
tHOLD = 80 ns MIN.
tL-S = 200 ns MIN. tL-S = 200 ns MIN.
DfD1 to De
LATCH
Electrical Characteristics (Unless otherwise specified, TA = 25°C, VDD = 3.0 V, VM = 3.0 V)
Parameter Symbol Condition MIN. TYP. MAX. Unit
VDD pin current in standby mode IDD(STB) RESETB pin: Low level 1.0
µ
A
VDD pin current in during operation IDD(ACT) RESETB pin: High level 5.0 mA
High-level input current IIH VIN = VDD 50
µ
A
Low-level input current IIL VIN = 0 V −1.0
µ
A
Input pull down resistance RIND 50 200 kΩ
High-level input voltage VIH 2.7 V ≤ VDD ≤ 3.6 V 0.7 x VDD V
Low-level input voltage VIL 2.7 V ≤ VDD ≤ 3.6 V 0.3 x VDD V
H-bridge on-state resistance Ron IM = 0.3 A, sum of upper and lower
stages
1.0 1.5
Ω
Output leakage current Note 1 IM(off) Per VM pin, all control pins: Low
level
1.0
µ
A
Low-voltage detection voltage VDDS 1.7 2.5 V
Internal reference voltage Note 2 VREF 450 500 550 mV
Current detection ratio
(ch1 to ch4) Note 2
900 1000 1100
Current detection ratio (ch7) Note 2
IM = 0.1 A, with sense resistor
(connect to FB) of 2 kΩ
950 1050 1150
Output turn-on time ton RL = 20 Ω 0.02 0.5 1.0
µ
s
Output turn-off time toff 0.02 0.5 1.0
µ
s
EXT high-level output voltage VextH IO = −100
µ
A 0.9 x VDD V
EXT low-level output voltage VextL IO = +100
µ
A 0.1 x VDD V
EVRMAX voltage EVRMAX (D0 to D4) = (1, 1, 1, 1, 1) Note 3 450 500 550 mV
Notes 1. This IC has a circuit that prevents current from flowing into the VM pin when VDD = 0 V.
2. The motor current accuracy varies depending on the motor actually used. With this IC, the total of the
reference voltage VREF error and the current sense circuit error is within ±10%.
3. Current setting parameter for address 3, address 4, address 7, address 8 and address C.
Data Sheet S16423EJ2V0DS 47
µ
PD168113
15. PACKAGE DRAWING
ITEM DIMENSIONS
D
E
f
HD
HE
t
7.75
7.75
0.64
0.23±0.05
0.20±0.03
0.14−0.20
0.50
0.40±0.10
0.05
0.08
0.10
0.625
0.625
0.17
0.14−0.16
0.20
8.00
8.00
0.20
P56K9-50-9B4
0.03+0.02
–0.025
(UNIT:mm)
A2
b
b1
c
c1
c2
e
Lp
x
y
y1
ZD
ZE
A1
0.67+0.08
–0.04
A
DETAIL OF P PART
A1 C
A2
Lp
0.08MIN.
0.08MIN.
TERMINAL SECTION
b1
b
c1 c2
42 29
15
14
28
43
56
1
4−C0.5
x4
HD
HE E
ZDZE
D
/2D
/2E
/2HE
/2HD
f S A B
x4
tS A B
P
A
S
y1 S
S
y
B
e
A
SxbAB
M
56-PIN PLASTIC WQFN (8x8)
NOTES
1 "t" AND "f" EXCLUDES MOLD FLASH
2 ALTHOUGH THERE ARE 4 TERMINALS IN THE CORNER PART
OF A PACKAGE, THESE TERMINALS ARE NOT DESIGNED FOR
INTERCONNECTION, BUT FOR MANUFACTURING PROCESS OF
THE PACKAGE, THEREFOR DO NOT INTEND TO SOLDER THESE
4 TERMINALS, SOLDERABLITY OF THE 4 TERMINALS ARE NOT
GUARANTEED.
Data Sheet S16423EJ2V0DS
48
µ
PD168113
16. RECOMMENDED SOLDERING CONDITIONS
The
µ
PD168113 should be soldered and mounted under the following recommended conditions.
For soldering methods and conditions other than those recommended below, contact an NEC Electronics sales
representative.
For technical information, see the following website.
Semiconductor Device Mount Manual (http://www.necel.com/pkg/en/mount/index.html)
Type of Surface Mount Device
µ
PD168113K9-9B4-A: 56-pin plastic WQFN (8 x 8)
Process Conditions Symbol
Infrared reflow Package peak temperature: 260°C, Time: 60 seconds MAX. (at 220°C or higher),
Count: Three times or less, Exposure limit: 3 days, Flux: Rosin flux with low chlorine
(0.2 Wt% or below) recommended
IR60-103-3
Caution Do not use different soldering methods together (except for partial heating).
Data Sheet S16423EJ2V0DS 49
µ
PD168113
1
2
3
4
VOLTAGE APPLICATION WAVEFORM AT INPUT PIN
Waveform distortion due to input noise or a reflected wave may cause malfunction. If the input of the
CMOS device stays in the area between VIL (MAX) and VIH (MIN) due to noise, etc., the device may
malfunction. Take care to prevent chattering noise from entering the device when the input level is fixed,
and also in the transition period when the input level passes through the area between VIL (MAX) and
VIH (MIN).
HANDLING OF UNUSED INPUT PINS
Unconnected CMOS device inputs can be cause of malfunction. If an input pin is unconnected, it is
possible that an internal input level may be generated due to noise, etc., causing malfunction. CMOS
devices behave differently than Bipolar or NMOS devices. Input levels of CMOS devices must be fixed
high or low by using pull-up or pull-down circuitry. Each unused pin should be connected to VDD or GND
via a resistor if there is a possibility that it will be an output pin. All handling related to unused pins must
be judged separately for each device and according to related specifications governing the device.
PRECAUTION AGAINST ESD
A strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide and
ultimately degrade the device operation. Steps must be taken to stop generation of static electricity as
much as possible, and quickly dissipate it when it has occurred. Environmental control must be
adequate. When it is dry, a humidifier should be used. It is recommended to avoid using insulators that
easily build up static electricity. Semiconductor devices must be stored and transported in an anti-static
container, static shielding bag or conductive material. All test and measurement tools including work
benches and floors should be grounded. The operator should be grounded using a wrist strap.
Semiconductor devices must not be touched with bare hands. Similar precautions need to be taken for
PW boards with mounted semiconductor devices.
STATUS BEFORE INITIALIZATION
Power-on does not necessarily define the initial status of a MOS device. Immediately after the power
source is turned ON, devices with reset functions have not yet been initialized. Hence, power-on does
not guarantee output pin levels, I/O settings or contents of registers. A device is not initialized until the
reset signal is received. A reset operation must be executed immediately after power-on for devices
with reset functions.
NOTES FOR CMOS DEVICES
µ
PD168113
Reference Documents
NEC Semiconductor Device Reliability/Quality Control System (C10983E)
Quality Grades On NEC Semiconductor Devices (C11531E)
The information in this document is current as of April, 2004. The information is subject to change
without notice. For actual design-in, refer to the latest publications of NEC Electronics data sheets or
data books, etc., for the most up-to-date specifications of NEC Electronics products. Not all
products and/or types are available in every country. Please check with an NEC Electronics sales
representative for availability and additional information.
No part of this document may be copied or reproduced in any form or by any means without the prior
written consent of NEC Electronics. NEC Electronics assumes no responsibility for any errors that may
appear in this document.
NEC Electronics does not assume any liability for infringement of patents, copyrights or other intellectual
property rights of third parties by or arising from the use of NEC Electronics products listed in this document
or any other liability arising from the use of such products. No license, express, implied or otherwise, is
granted under any patents, copyrights or other intellectual property rights of NEC Electronics or others.
Descriptions of circuits, software and other related information in this document are provided for illustrative
purposes in semiconductor product operation and application examples. The incorporation of these
circuits, software and information in the design of a customer's equipment shall be done under the full
responsibility of the customer. NEC Electronics assumes no responsibility for any losses incurred by
customers or third parties arising from the use of these circuits, software and information.
While NEC Electronics endeavors to enhance the quality, reliability and safety of NEC Electronics products,
customers agree and acknowledge that the possibility of defects thereof cannot be eliminated entirely. To
minimize risks of damage to property or injury (including death) to persons arising from defects in NEC
Electronics products, customers must incorporate sufficient safety measures in their design, such as
redundancy, fire-containment and anti-failure features.
NEC Electronics products are classified into the following three quality grades: "Standard", "Special" and
"Specific".
The "Specific" quality grade applies only to NEC Electronics products developed based on a customer-
designated "quality assurance program" for a specific application. The recommended applications of an NEC
Electronics product depend on its quality grade, as indicated below. Customers must check the quality grade of
each NEC Electronics product before using it in a particular application.
"Standard": Computers, office equipment, communications equipment, test and measurement equipment, audio
and visual equipment, home electronic appliances, machine tools, personal electronic equipment
and industrial robots.
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systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support).
"Specific": Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems and medical equipment for life support, etc.
The quality grade of NEC Electronics products is "Standard" unless otherwise expressly specified in NEC
Electronics data sheets or data books, etc. If customers wish to use NEC Electronics products in applications
not intended by NEC Electronics, they must contact an NEC Electronics sales representative in advance to
determine NEC Electronics' willingness to support a given application.
(Note)
(1) "NEC Electronics" as used in this statement means NEC Electronics Corporation and also includes its
majority-owned subsidiaries.
(2) "NEC Electronics products" means any product developed or manufactured by or for NEC Electronics (as
defined above).
•
•
•
•
•
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M8E 02. 11-1
