ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 1/25
Flash 3V Only 4 Mbit Serial Flash Memory
FEATURES
y Single supply voltage 2.7~3.6V
y Speed
- Read max frequency : 33MHz
- Fast Read max frequency : 50MHz; 75MHz; 100MHz
y Low power consumption
- Active current :40mA
- Standby current : 25 μA
y Reliability
- 100,000 program/erase cycles typically
- 10 years Data Retention
y Program
- Byte program time 8 μs(typical)
y Erase
- Chip erase time 11s(typical)
- Sector erase time 0.7s(typical)
y Auto Address Increment (AAI) Programming
- Decrease total chip programming time over
Byte-Program operations
y SPI Serial Interface
- SPI Compatible : Mode 0 and Mode3
y End of program or erase detection
y Write Protect ( WP )
y Hold Pin ( HOLD )
y Package avalible
- 8-pin SOIC 150-mil
ORDERING INFORMATION
Part No. Speed Package COMMENTS
F25L04UA -50PG 50MHz 8 lead SOIC Pb-free
F25L04UA -75PG 75MHz 8 lead SOIC Pb-free
F25L04UA -100PG 100MHz 8 lead SOIC Pb-free
GENERAL DESCRIPTION
The F25L04UA is a 4Megabit, 3V only CMOS Serial Flash
memory device. ESMT’s memory devices reliably store memory
data even after 100,000 program and erase cycles.
The F25L04UA features a sector erase architecture. The device
memory array is divided into one 8K bytes, two 4K bytes, one
16K bytes, one 32K bytes, and seven 64K bytes. Sectors can be
erased individually without affecting the data in other sectors.
Whole chip erase capabilities provide the flexibility to revise the
data in the device.
The sector protect/unprotect feature disables both program and
erase operations in any combination of the sectors of the
memory.
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 2/25
PIN CONFIGURATIONS
8-PIN SOIC
PIN Description
Symbol Pin Name Functions
SCK Serial Clock
To provide the timming for serial input and
output operations
SI Serial Data Input
To transfer commands, addresses or data
serially into the device.
Data is latched on the rising edge of SCK.
SO Serial Data Output
To transfer data serially out of the device.
Data is shifted out on the falling edge of
SCK.
CE Chip Enable To activate the device when CE is low.
WP Write Protect
The Write Protect ( WP ) pin is used to
enable/disable BPL bit in the status
register.
HOLD Hold
To temporaiily stop serial communication
with SPI flash memory without resetting
the device.
VDD Power Supply To provide power.
VSS Ground
0
1 8
2 7
3 6
4 5
VDD
HOLD
SCK
SI
CE
SO
WP
VSS
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 3/25
SECTOR STRUCTURE
Table1 : F25L04UA Sector Address Table
Sector A ddress
Symbol Sector Size
(Kbytes) Address range A18 A17 A16 A15 A14 A13 A12
11 8KB 7E000H – 7FFFFH 1 1 1 1 1 1 X
10 4KB 7D000H – 7DFFFH 1 1 1 1 1 0 1
9 4KB 7C000H – 7CFFFH 1 1 1 1 1 0 0
8 16KB 78000H – 7BFFFH 1 1 1 1 0 X X
7 32KB 70000H – 77FFFH 1 1 1 0 X X X
6 64KB 60000H – 6FFFFH 1 1 0 X X X X
5 64KB 50000H – 5FFFFH 1 0 1 X X X X
4 64KB 40000H – 4FFFFH 1 0 0 X X X X
3 64KB 30000H – 3FFFFH 0 1 1 X X X X
2 64KB 20000H – 2FFFFH 0 1 0 X X X X
1 64KB 10000H – 1FFFFH 0 0 1 X X X X
0 64KB 00000H – 0FFFFH 0 0 0 X X X X
Table2 : F25L04UA Block Protection Table
Protection Level BP1 BP0 Protected Memory Area
0 0 0 None
1(1/8 memory array) 0 1 70000H –7FFFFH
2(1/4 memory array) 1 0 60000H –7FFFFH
3(all memory array) 1 1 00000H –7FFFFH
Block Protection (BP1, BP0)
The Block-Protection (BP1, BP0) bits define the size of the
memory area, as defined in Table2 to be software protected
against any memory Write (Program or Erase) operations. The
Write-Status-Register (WRSR) instruction is used to program the
BP1 and BP0 bits as long as WP is high or the
Block-Protection-Look (BPL) bit is 0. Chip-Erase can only be
executed if Block-Protection bits are both 0. After power-up, BP1
and BP0 are set to1.
Block Protection Lock-Down (BPL)
WP pin driven low (VIL), enables the Block-Protection
-Lock-Down (BPL) bit. When BPL is set to 1, it prevents any
further alteration of the BPL, BP1, and BP0 bits. When the WP
pin is driven high (VIH), the BPL bit has no effect and its value is
“Don’t Care”. After power-up, the BPL bit is reset to 0.
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 4/25
FUNTIONAL BLOCK DIAGRAM
Addre ss
Buffers
and
Latches
X-Decoder SuperFlash
Memory
Y-Decoder
I/O Butters
and
Data Latches
Serial Interface
Control Logic
CE SCK SI WPSO HOLD
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 5/25
Hold Operation
HOLD pin is used to pause a serial sequence underway with the
SPI flash memory without resetting the clocking sequence. To
activate the HOLD mode, CE must be in active low state. The
HOLD mode begins when the SCK active low state coincides
with the falling edge of the HOLD signal. The HOLD mode ends
when the HOLD signal’s rising edge coincides with the SCK
active low state.
If the falling edge of the HOLD signal does not coincide with the
SCK active low state, then the device enters Hold mode when the
SCK next reaches the active low state.
Similarly, if the rising edge of the HOLD signal does not
coincide with the SCK active low state, then the device exits in
Hold mode when the SCK next reaches the active low state. See
Figure 3 for Hold Condition waveform.
Once the device enters Hold mode, SO will be in high impedance
state while SI and SCK can be VIL or VIH.
If CE is driven active high during a Hold condition, it resets the
internal logic of the device. As long as HOLD signal is low, the
memory remains in the Hold condition. To resume
communication with the device, HOLD must be driven active
high, and CE must be driven active low. See Figure 17 for Hold
timing.
Active Hold Active Hold Active
HOLD
SCK
Figure 3 : HOLD CONDITION WAVEFORM
Write Protection
F25L04UA provides software Write protection.
The Write Protect pin ( WP ) enables or disables the lockdown
function of the status register. The Block-Protection bits (BP1,
BP0, and BPL) in the status register provide Write protection to
the memory array and the status register. See Table 2 for
Block-Protection description.
Write Protect Pin (WP )
The Write Protect ( WP ) pin enables the lock-down function of
the BPL bit (bit 7) in the status register. When WP is driven low,
the execution of the Write-Status-Register (WRSR) instruction is
determined by the value of the BPL bit (see Table 3). When WP
is high, the lock-down function of the BPL bit is disabled.
TABLE3: CONDITIONS TO EXECUTE
WRITE-STATUS- REGISTER (WRSR)
INSTRUCTION
WP BPL Execute WRSR Instruction
L 1 Not Allowed
L 0 Allowed
H X Allowed
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 6/25
Status Register
The software status register provides status on whether the flash
memory array is available for any Read or Write operation,
whether the device is Write enabled, and the state of the memory
Write protection. During an internal Erase or Program operation,
the status register may be read only to determine the completion
of an operation in progress.
Table 4 describes the function of each bit in the software status
register.
TABLE 4: SOFTWARE STATUS REGISTER
Bit Name Function Default at
Power-up Read/Write
0 BUSY
1 = Internal Write operation is in progress
0 = No internal Write operation is in progress 0 R
1 WEL
1 = Device is memory Write enabled
0 = Device is not memory Write enabled 0 R
2 BP0 Indicate current level of block write protection (See Table 2) 1 R/W
3 BP1 Indicate current level of block write protection (See Table 2) 1 R/W
4:5 RES Reserved for future use 0 N/A
6 AAI
Auto Address Increment Programming status
1 = AAI programming mode
0 = Byte-Program mode
0 R
7 BPL
1 = BP1, BP0 are read-only bits
0 = BP1, BP0 are read/writable 0 R/W
Note1 : Only BP0,BP1 and BPL are writable
Note2 : All register bits are volatility
Note3 : All area are protected at power-on (BP1=1,BP0=1)
Busy
The Busy bit determines whether there is an internal Erase or
Program operation in progress. A “1” for the Busy bit indicates
the device is busy with an operation in progress. A “0” indicates
the device is ready for the next valid operation.
Write Enable Latch (WEL)
The Write-Enable-Latch bit indicates the status of the internal
memory Write Enable Latch. If the Write-Enable-Latch bit is set to
“1”, it indicates the device is Write enabled. If the bit is set to “0”
(reset), it indicates the device is not Write enabled and does not
accept any memory Write (Program/ Erase) commands. The
Write-Enable-Latch bit is automatically reset under the following
conditions:
• Power-up
• Write-Disable (WRDI) instruction completion
• Byte-Program instruction completion
• Auto Address Increment (AAI) programming reached its
highest memory address
• Sector-Erase instruction completion
• Block-Erase instruction completion
• Chip-Erase instruction completion
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 7/25
Instructions
Instructions are used to Read, Write (Erase and Program), and
configure the F25L04UA. The instruction bus cycles are 8 bits
each for commands (Op Code), data, and addresses. Prior to
executing any Byte-Program, Auto Address Increment (AAI)
programming, Sector-Erase, Block-Erase, or Chip-Erase
instructions, the Write-Enable (WREN) instruction must be
executed first. The complete list of the instructions is provided in
Table 5. All instructions are synchronized off a high to low
transition of CE . Inputs will be accepted on the rising edge of
SCK starting with the most significant bit. CE must be driven
low before an instruction is entered and must be driven high after
the last bit of the instruction has been shifted in (except for Read,
Read-ID and Read-Status-Register instructions). Any low to high
transition on CE , before receiving the last bit of an instruction
bus cycle, will terminate the instruction in progress and return the
device to the standby mode.
Instruction commands (Op Code), addresses, and data are all
input from the most significant bit (MSB) first.
TABLE 5: DEVICE OPERATION INSTRUCTIONS
Bus Cycle4
1 2 3 4 5 6
Cycle Type/
Operation1,2
Max
Freq
MHz SIN S
OUT SIN SOUT SIN S
OUT SIN S
OUT S
IN S
OUT SIN SOUT
Read 33 03H Hi-Z A23-A16 Hi-Z A15-A8Hi-Z A7-A0Hi-Z X DOUT
High-Speed-Read 0BH Hi-Z A23-A16 Hi-Z A15-A8Hi-Z A7-A0Hi-Z X X X DOUT
Sector-Erase4,5 20H Hi-Z A23-A16 Hi-Z A15-A8Hi-Z A7-A0Hi-Z - -
Chip-Erase5 60H Hi-Z - - - - - - - -
Byte-Program5 02H Hi-Z A23-A16 Hi-Z A15-A8Hi-Z A7-A0Hi-Z DIN Hi-Z
Auto Address Increment -
word programming (AAI)6 AFH Hi-Z A23-A16 Hi-Z A15-A8Hi-Z A7-A0Hi-Z DIN Hi-Z
Read-Status-Register
(RDSR) 05H Hi-Z X DOUT - Note7- Note7 - Note7
Enable-Write-Status-Register
(EWSR)8 50H Hi-Z - - - - - - - -
Write-Status-Register
(WRSR)8 01H Hi-Z Data Hi-Z - - -. - - -
Write-Enable (WREN) 11 06H Hi-Z - - - - - - - -
Write-Disable (WRDI) 04H Hi-Z -
Jedec-Read-ID (JEDEC-ID) 10
50
and
75
and
100
9FH Hi-Z X 8CH X 8CH X 8CH - -
1. Operation: SIN = Serial In, SOUT = Serial Out
2. X = Dummy Input Cycles (VIL or VIH); - = Non-Applicable Cycles (Cycles are not necessary)
3. One bus cycle is eight clock periods.
4. Sector addresses: use AMS-A12, remaining addresses can be VIL or VIH
5. Prior to any Byte-Program, AAI-Program, Sector-Erase ,or Chip-Erase operation, the Write-Enable (WREN) instruction must be
executed.
6. To continue programming to the next sequential address location, enter the 8-bit command, AFH, followed by the data to be
programmed.
7. The Read-Status-Register is continuous with ongoing clock cycles until terminated by a low to high transition on CE .
8. The Enable-Write-Status-Register (EWSR) instruction and the Write-Status-Register (WRSR) instruction must work in conjunction
of each other. The WRSR instruction must be executed immediately (very next bus cycle) after the EWSR instruction to make both
instructions effective.
9. The Jedec-Read-ID is continuous with on going clock cycles until terminated by a low to high transition on CE .
10. The Jedec-Read-ID is output first byte 8CH as manufacture ID; second byte 8CH as top memory type; third byte 8CH as memory
capacity.
11. The Write-Enable (WREN) instruction and the Write-Status-Register (WRSR) instruction must work in conjunction of each other.
The WRSR instruction must be executed immediately (very next bus cycle) after the WREN instruction to make both instructions
effective. Both EWSR and WREN can enable WRSR, user just need to execute one of it. A successful WRSR can reset WREN.
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 8/25
Read (33 MHz)
The Read instruction supports up to 33 MHz, it outputs the data
starting from the specified address location. The data output
stream is continuous through all addresses until terminated by a
low to high transition on CE . The internal address pointer will
automatically increment until the highest memory address is
reached. Once the highest memory address is reached, the
address pointer will automatically increment to the beginning
(wrap-around) of the address space, i.e. for 4 Mbit density, once
the data from address location 7FFFFH had been read, the next
output will be from address location 00000H.
The Read instruction is initiated by executing an 8-bit command,
03H, followed by address bits [A23-A0]. CE must remain active
low for the duration of the Read cycle. See Figure 4 for the Read
sequence.
Figure 4 : READ SEQUENCE
CE
SCK
SI
1 2 3 4 5 6 7 8 15 16 23 24 31 32 39 40 47 48 55 56 63 64 70
N+ 4
DOU T
N+3
DOUT
N+2
DOUT
N+1
DOUT
N
DOUT
MSB
MSB
MSB
HIGH IMPENANCE
SO
03
MODE3
MODE1
ADD. ADD. ADD.
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 9/25
Fast-Read (50 MHz ; 75 MHz; 100 MHz)
The High-Speed-Read instruction supporting up to 100 MHz is
initiated by executing an 8-bit command, 0BH, followed by
address bits [A23-A0] and a dummy byte. CE must remain active
low for the duration of the High-Speed-Read cycle. See Figure 5
for the High-Speed-Read sequence.
Following a dummy byte (8 clocks input dummy cycle), the
High-Speed-Read instruction outputs the data starting from the
specified address location. The data output stream is continuous
through all addresses until terminated by a low to high transition
on CE . The internal address pointer will automatically increment
until the highest memory address is reached. Once the highest
memory address is reached, the address pointer will
automatically increment to the beginning (wrap-around) of the
address space, i.e. for 4 Mbit density, once the data from address
location 07FFFFH has been read, the next output will be from
address location 000000H.
Figure 5 : HIGH-SPEED-READ SEQUENCE
CE
SCK
SI
0 1 2 3 4 5 6 7 8 1516 2324 3132 3940 4748 55 56 63 64 80
N+ 4
DOU T
N+ 3
DOU T
N+2
DOUT
N+1
DOUT
N
DOU T
MSB
MSB
MSB
HIGH IMPENANCE
SO
0B ADD. ADD. A DD .
MOD E3
MODE0
71 72
X
Note : X = Dummy Byte : 8 Clocks Input Dummy (VIL or VIH)
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 10/25
Byte-Program
The Byte-Program instruction programs the bits in the selected
byte to the desired data. The selected byte must be in the erased
state (FFH) when initiating a Program operation. A Byte-Program
instruction applied to a protected memory area will be ignored.
Prior to any Write operation, the Write-Enable (WREN)
instruction must be executed. CE must remain active low for
the duration of the Byte-Program instruction. The Byte-Program
instruction is initiated by executing an 8-bit command, 02H,
followed by address bits [A23-A0]. Following the address, the data
is input in order from MSB (bit 7) to LSB (bit 0). CE must be
driven high before the instruction is executed. The user may poll
the Busy bit in the software status register or wait TBP for the
completion of the internal self-timed Byte-Program operation.
See Figure 6 for the Byte-Program sequence.
Figure 6 : BYTE-PROGRAM SEQUENCE
CE
SCK
SI
012345678 1516 2324 3132 39
LSB
MSB
MSB
HIGH IMPENANCE
S
O
02 ADD. ADD. ADD.
MODE3
MODE0
DIN
MSB
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 11/25
Auto Address Increment (AAI) Program
The AAI program instruction allows multiple bytes of data to be
programmed without re-issuing the next sequential address
location. This feature decreases total programming time when
the entire memory array is to be programmed. An AAI program
instruction pointing to a protected memory area will be ignored.
The selected address range must be in the erased state (FFH)
when initiating an AAI program instruction.
Prior to any write operation, the Write-Enable (WREN) instruction
must be executed. The AAI program instruction is initiated by
executing an 8-bit command, AFH, followed by address bits
[A23-A0]. Following the addresses, the data is input sequentially
from MSB (bit 7) to LSB (bit 0). CE must be driven high before
the AAI program instruction is executed. The user must poll the
BUSY bit in the software status register or wait TBP for the
completion of each internal self-timed Byte-Program cycle. Once
the device completes programming byte, the next sequential
address may be program, enter the 8-bit command, AFH,
followed by the data to be programmed. When the last desired
byte had been programmed, execute the Write-Disable (WRDI)
instruction, 04H, to terminate AAI. After execution of the WRDI
command, the user must poll the Status register to ensure the
device completes programming. See Figure 7 for AAI
programming sequence.
There is no wrap mode during AAI programming; once the
highest unprotected memory address is reached, the device will
exit AAI operation and reset the Write-Enable-Latch bit (WEL = 0).
Figure 7 : AUTO ADDRESS INCREMENT (AAI) PROGRAM SEQUENCE
CE
SCK
SI
012 3 45 67 8 15 16 23 24 31 32
MOD E 3
MODE0
3334 35 36 37 38 39 012 3 45 67 8910 11 12 13 14 15 01
AF Da ta B yt e 1 AFA[7,0]A[15,8]A[23,16] Data Byte 2
T
BP
TBP
CE
SCK
SI
0123456789 012345678910 11 12 13 14 15
AF 04 05
Last Data Byte
TBP
1011 12 1314 15 01234567
SO
Write Disable (WRDI)
Instruction to terminate
AAI Operation
Read Status Register(RDSR)
Instruction to verify end of
AAI Operation
DOUT
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 12/25
Sector-Erase
The Sector-Erase instruction clears all bits in the selected sector
to FFH. A Sector-Erase instruction applied to a protected
memory area will be ignored. Prior to any Write operation, the
Write-Enable (WREN) instruction must be executed. CE must
remain active low for the duration of the any command sequence.
The Sector-Erase instruction is initiated by executing an 8-bit
command, 20H, followed by address bits [A23-A0]. Address bits
[AMS-A12] (AMS = Most Significant address) are used to determine
the sector address (SAX), remaining address bits can be VIL or
VIH. CE must be driven high before the instruction is executed.
The user may poll the Busy bit in the software status register or
wait TSE for the completion of the internal self-timed
Sector-Erase cycle. See Figure 8 for the Sector-Erase sequence.
FIGURE 8 : SECTOR-ERASE SEQUENCE
CE
SCK
SI
012345678 1516 2324 3132 39
MSB
MSB
HIGH IMPENANCE
SO
02 ADD. ADD. ADD.
MOD E3
MODE0
DIN
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 13/25
Chip-Erase
The Chip-Erase instruction clears all bits in the device to FFH. A
Chip-Erase instruction will be ignored if any of the memory area
is protected. Prior to any Write operation, the Write-Enable
(WREN) instruction must be executed. CE must remain active
low for the duration of the Chip-Erase instruction sequence. The
Chip-Erase instruction is initiated by executing an 8-bit command,
60H. CE must be driven high before the instruction is executed.
The user may poll the Busy bit in the software status register or
wait TCE for the completion of the internal self-timed Chip-Erase
cycle.
See Figure 9 for the Chip-Erase sequence.
FIGURE 9 : CHIP-ERASE SEQUENCE
Read-Status-Register (RDSR)
The Read-Status-Register (RDSR) instruction allows reading of
the status register. The status register may be read at any time
even during a Write (Program/Erase) operation.
When a Write operation is in progress, the Busy bit may be
checked before sending any new commands to assure that the
new commands are properly received by the device.
CE must be driven low before the RDSR instruction is entered
and remain low until the status data is read.
Read-Status-Register is continuous with ongoing clock cycles
until it is terminated by a low to high transition of the CE
See Figure 10 for the RDSR instruction sequence.
Figure10 : READ-STATUS-REGIST ER (RDSR) SEQUENCE
CE
SCK
SI
0123456789
Bit7
MSB
MSB
HIGH IMPENANCE
SO
05
MODE3
MODE1
10 11 12 13 14
Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Status
Register Out
CE
SCK
SI
01234567
MSB
HI GH IM PENAN CE
SO
60
MOD E3
MODE0
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 14/25
Write-Enable (WREN)
The Write-Enable (WREN) instruction sets the Write-
Enable-Latch bit to 1 allowing Write operations to occur.
The WREN instruction must be executed prior to any Write
(Program/Erase) operation. CE must be driven high before the
WREN instruction is executed.
FIGURE 11 : WRITE ENABLE (WREN) SEQUENCE
Write-Disable (WRDI)
The Write-Disable (WRDI) instruction resets the Write-Enable-Latch
bit and AAI bit to 0 disabling any new Write operations from occurring.
CE must be driven high before the WRDI instruction is executed.
Figure 12 : WRITE DISABLE (WRDI) SEQUENCE
Enable-Write-Status-Register (EWSR)
The Enable-Write-Status-Register (EWSR) instruction arms the
Write-Status-Register (WRSR) instruction and opens the status
register for alteration. The Enable-Write-Status-Register
instruction does not have any effect and will be wasted, if it is not
followed immediately by the Write-Status-Register (WRSR)
instruction. CE must be driven low before the EWSR instruction
is entered and must be driven high before the EWSR instruction
is executed.
CE
SCK
SI
01234567
MSB
HI GH IM PENAN CE
SO
06
MOD E3
MODE0
CE
SCK
SI
01234567
MSB
HI GH IM PENAN CE
SO
04
MOD E3
MODE0
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 15/25
Write-Status-Register (WRSR)
The Write-Status-Register instruction works in conjunction with
the Enable-Write-Status-Register (EWSR) instruction to write
new values to the BP1, BP0, and BPL bits of the status register.
The Write-Status-Register instruction must be executed
immediately after the execution of the Enable-Write-Status
-Register instruction (very next instruction bus cycle). This
two-step instruction sequence of the EWSR instruction followed
by the WRSR instruction works like SDP (software data
protection) command structure which prevents any accidental
alteration of the status register values. The Write-Status-Register
instruction will be ignored when WP is low and BPL bit is set to
“1”. When the WP is low, the BPL bit can only be set from “0” to
“1” to lockdown the status register, but cannot be reset from “1” to
“0”.
When WP is high, the lock-down function of the BPL bit is
disabled and the BPL, BP0, and BP1 bits in the status register
can all be changed. As long as BPL bit is set to 0 or WP pin is
driven high (VIH) prior to the low-to-high transition of the CE pin
at the end of the WRSR instruction, the BP0, BP1, and BPL bit in
the status register can all be altered by the WRSR instruction. In
this case, a single WRSR instruction can set the BPL bit to “1” to
lock down the status register as well as altering the BP0 and BP1
bit at the same time. See Table 3 for a summary description of
WP and BPL functions. CE must be driven low before the
command sequence of the WRSR instruction is entered and
driven high before the WRSR instruction is executed. See Figure
13 for EWSR and WRSR instruction sequences.
Figure 13 : ENABLE-WRITE-STATUS-REGISTER (EWSR) AMD WRITE-STATUS-REGISTER (WRSR) SEQUENCE
CE
SCK
SI
01234567
MSB
MSB
HIGH IMPENANCE
SO
50
MOD E 3
MODE0
01234567891011 12 13 1415
STATUS
REGISTER IN
01 76 5 4 3 2 1 0
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 16/25
Jedec-Read-ID (JEDEC-ID)
The Jedec-Read-ID instruction is for reading the Manufacturer ID of 1-byte and followed by Device ID of 2-byte. The ESMT
Manufacturer ID is 8CH.,the memory type ID is 8CH as the first-byte device ID, the memory capacity ID is 8CH as the second-byte
device ID. The instruction sequence is shown in Fig14. The Jedec-Read-ID instruction is terminated by a low to high transition on CE
at any time during data output.
Figure 14 : Jedec-Read -ID (JEDEC-ID)
Jedec-Read-I D DATA
Device ID
Manufacture’s ID
Memory Type Memory Capacity
Byte1 Byte2 Byte3
8CH 8CH 8CH
CE
SCK
SI
0123456789
MSB
HIGH IMPENANCE
SO
9F
MODE3
MODE0
1011 12 13 14 15
8C
16 17 18 1920 2122 23 24 25 26 27 28 2930 31 32 33 34
8C 8C
MSB
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 17/25
ELECTRICAL SPECIFICATIONS
Absolute Maximum Stress Ratings
(Applied conditions greater than those listed under “Absolute Maximum Stress Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at these conditions or conditions greater than those defined in the
operational sections of this data sheet is not implied. Exposure to absolute maximum stress rating conditions may affect device
reliability.)
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
D. C. Voltage on Any Pin to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VDD+0.5V
Transient Voltage (<20 ns) on Any Pin to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . -2.0V to VDD+2.0V
Package Power Dissipation Capability (Ta = 25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0W
Surface Mount Lead Soldering Temperature (3 Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240°C
Output Short Circuit Current (Note1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Note : 1. Output shorted for no more than one second. No more than one output shorted at a time.
AC CONDITIONS OF TEST
Input Rise/Fall Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. <5 ns
Output Load . . . . . . . . . . . . . . . . . . . . . . . . CL = 15 pF for ≧75MHz
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CL = 30 pF for ≦50MHz
See Figures 19 and 20
OPERATING RANGE
Parameter Symbol Value Unit
VDD (for FCLK 75≦MHz) 2.7~3.6
Operating Supply Voltage VDD (for FCLK = 100MHz) 3.2~3.6 V
Ambient Operating
Temperature TA 0~70
°C
TABLE 7: DC OPERATING CHARACTERISTICS
Limits
Symbol Parameter Min Max Units Test Conditions
IDDR Read Current 15 mA
CE =0.1 VDD/0.9 VDD@33 MHz, SO=open
IDDW Program and Erase Current 40 mA
CE =VDD
ISB Standby Current 25 µA
CE =VDD, VIN=VDD or VSS
ILI Input Leakage Current 1 µA VIN=GND to VDD, VDD=VDD Max
ILO Output Leakage Current 1 µA VOUT=GND to VDD, VDD=VDD Max
VIL Input Low Voltage 0.8 V VDD=VDD Min
VIH Input High Voltage 0.7 VDD V VDD=VDD Max
VOL Output Low Voltage 0.2 V IOL=100 µA, VDD=VDD Min
VOH Output High Voltage VDD-0.2 V IOH=-100 µA, VDD=VDD Min
TABLE 8 : RECOMMENDED SYSTEM POWER-UP TIMINGS
Symbol Parameter Minimum Units
TPU-READ1 V
DD Min to Read Operation 10 µs
TPU-WRITE1 V
DD Min to Write Operation 10 µs
1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter.
TABLE 9: CAPACITANCE (TA = 25°C, f=1 Mhz, other pins open)
Parameter Description Test Condition Maximum
COUT1 Output Pin Capacitance VOUT = 0V 12 pF
CIN1 Input Capacitance VIN = 0V 6 pF
1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter.
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 18/25
TABLE 10: RELIABILITY CHARACTERISTICS
Symbol Parameter Typical Specification Units Test Method
NEND1 Endurance 100,000 Cycles JEDEC Standard A117
TDR1 Data Retention 10 Years JEDEC Standard A103
ILTH1 Latch Up 100 + IDD mA JEDEC Standard 78
1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter.
TABLE 11 : AC OPERATING CHARACTERISTICS
Normal 33MHz Fast 50 MHz Fast 75 MHz Fast 100 MHz
Symbol Parameter Min Max Min Max Min Max Min Max Units
FCLK Serial Clock Frequency 33 50 75 100 MHz
TSCKH Serial Clock High Time 13 9 6 5 ns
TSCKL Serial Clock Low Time 13 9 6 5 ns
TCES1 CE Active Setup Time 5 5 5 5 ns
TCEH1 CE Active Hold Time 5 5 5 5 ns
TCHS1 CE Not Active Setup Time 5 5 5 5 ns
TCHH1 CE Not Active Hold Time 5 5 5 5 ns
TCPH CE High Time 100 100 100 100 ns
TCHZ CE High to High-Z Output 9 9 9 9 ns
TCLZ SCK Low to Low-Z Output 0 0 0 0 ns
TDS Data In Setup Time 3 3 3 3 ns
TDH Data In Hold Time 3 3 3 3 ns
THLS HOLD Low Setup Time 5 5 5 5 ns
THHS HOLD High Setup Time 5 5 5 5 ns
THLH HOLD Low Hold Time 5 5 5 5 ns
THHH HOLD High Hold Time 5 5 5 5 ns
THZ HOLD Low to High-Z Output 9 9 9 9 ns
TLZ HOLD High to Low-Z Output 9 9 9 9 ns
TOH Output Hold from SCK Change 0 0 0 0 ns
TV Output Valid from SCK 12 9 9 7 ns
1. Relative to SCK.
ESMT
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Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 19/25
ERASE AND PROGRAMMING PERFORMANCE
Limits
Parameter Symbol
Typ.(2) Max.(3) Unit
Sector Erase Time TSE 0.7 15 sec
Chip Erase Time TCE 11 50 sec
Byte Programming Time TBP 9 300 us
Chip Programming Time 4.5 13.5 sec
Erase/Program Cycles(1) 100,000 - Cycles
Notes:
1.Not 100% Tested, Excludes external system level over head.
2.Typical values measured at 25°C, 3V.
3.Maximum values measured at 85°C, VDD(min).
ESMT
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Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 20/25
FIGURE 15: SERIAL INPUT TIMING DIAGRAM
FIGURE 16: SERIAL OUTPUT TIMING DIAGRAM
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 21/25
CE#
SCK
SO
SI
HOLD#
FIGURE 17: HOLD TIMING DIAGRAM
FIGURE 18: POWER-UP TIMING DIAGRAM
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 22/25
FIGURE 19: AC INPUT/OUTPUT REFERENCE WAVEFORMS
FIGURE 20: A TEST LOAD EXAMPLE
Input timing re
f
erence le
v
el Output timing reference level
0.8VCC
0.2VCC
0.7VCC
0.3VCC 0.5VCC
AC
Measurement
Level
Note : In
p
ut
p
ulse rise an
d
f
all time are <5ns
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 23/25
PACKAGING DIAGRAMS
8-LEAD SOIC ( 150 mil )
b e
0
L
DETAIL "X"
A
A1
SEATING PLANE
D
A2
L1
"X"
C
1 4
E
H
85
0.25
GAUGE PLANE
Dimension in mm Dimension in inch Dimension in mm Dimension in inch
Symbol Min Norm Max Min Norm Max Symbol Min Norm Max Min Norm Max
A 1.35 1.60 1.75 0.053 0.063 0.069 D 4.80 4.90 5.00 0.189 0.193 0.197
A1 0.10 0.15 0.25 0.004 0.006 0.010 E 3.80 3.90 4.00 0.150 0.154 0.157
A2 1.25 1.45 1.55 0.049 0.057 0.061 L 0.40 0.66 0.86 0.016 0.026 0.034
b 0.33 0.406 0.51 0.013 0.016 0.020 e 1.27 BSC 0.050 BSC
c 0.19 0.203 0.25 0.0075 0.008 0.010 L1 1.00 1.05 1.10 0.039 0.041 0.043
H 5.80 6.00 6.20 0.228 0.236 0.244
θ
°0 --- °8 °0 --- °8
Controlling dimension : millimenter
ESMT
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Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 24/25
Revision History
Revision Date Description
1.0 2006.02.15 Original
1.1 2006.09.05
1. Erase/Program cycles (min) = 100,000 cycles
2. Delete min.
3. Add Erase/program cycle note 1
4. Modify Note3 from 25°C to 85°C
1.2 2008.01.13
1. Correct the size of "L" in the packaging diagram of SOIC
150 mil
2. Add operating range table
3. Delete the rating of Temperature Under Bias
4. Add the symbol for erase and byte programming time
5. Correct typo error
6. Modify headline
7. Add Revision History
8. Correct part no.
ESMT
F25L04UA
Elite Semiconductor Memory Technology Inc. Publication Date: Jan. 2009
Revision: 1.2 25/25
Important Notice
All rights reserved.
No part of this document may be reproduced or duplicated in any form or
by any means without the prior permission of ESMT.
The contents contained in this document are believed to be accurate at
the time of publication. ESMT assumes no responsibility for any error in
this document, and reserves the right to change the products or
specification in this document without notice.
The information contained herein is presented only as a guide or
examples for the application of our products. No responsibility is
assumed by ESMT for any infringement of patents, copyrights, or other
intellectual property rights of third parties which may result from its use.
No license, either express , implied or otherwise, is granted under any
patents, copyrights or other intellectual property rights of ESMT or
others.
Any semiconductor devices may have inherently a certain rate of failure.
To minimize risks associated with customer's application, adequate
design and operating safeguards against injury, damage, or loss from
such failure, should be provided by the customer when making
application designs.
ESMT 's products are not authorized for use in critical applications such
as, but not limited to, life support devices or system, where failure or
abnormal operation may directly affect human lives or cause physical
injury or property damage. If products described here are to be used for
such kinds of application, purchaser must do its own quality assurance
testing appropriate to such applications.
