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S-25A256B
www.ablicinc.com
© ABLIC Inc., 2011-2014
FOR AUTOMOTIVE 125°C OPERATION
SPI SERIAL E2PROM
Rev.1.2_02
This IC is a SPI serial E2PROM which operates under the high temperature, at high speed, with the wide range operation for
automotive components. This IC has the capacity of 256 K-bit and the organization of 32768 words 8-bit. Page write and
Sequential read are available.
Caution Before using the product in automobile control unit or medical equipment, contact to ABLIC Inc. is
indispensable.
Features
Package
Operating voltage range
Read:
2.5 V ~ 5.5 V
Write:
2.5 V ~ 5.5 V
Operation frequency:
Write time:
SPI mode (0, 0) and (1, 1)
Page write:
Sequential read
Write protect:
Protect area:
5.0 MHz max.
5.0 ms max.
64 bytes / page
Software, Hardware
25%, 50%, 100%
Monitoring of a write memory state by the status register
Function to prevent malfunction by monitoring clock pulse
Write protect function during the low power supply voltage
CMOS schmitt input ( CS , SCK, SI, WP , HOLD )
Endurance*1:
106 cycle / word *2 (Ta = 25C)
3 105 cycle / word *2 (Ta = 125C)
Data retention:
100 years (Ta = 25C)
50 years (Ta = 125C)
Memory capacity:
256 K-bit
Initial delivery state:
FFh, SRWD = 0, BP1 = 0, BP0 = 0
Burn-in specifications:
Wafer level burn-in
Operation temperature range: Ta = 40°C to 125°C
Lead-free (Sn 100%), halogen-free*3
AEC-Q100 qualified*4
8-Pin SOP (JEDEC)
5
8
4
1
(5.0 6.0 t1.75 mm)
*1. Refer to "Endurance" for details.
*2. For each address (Word: 8-bit)
*3. Refer to "Product Name Structure" for details.
*4. Contact our sales office for details.
Remark Refer to "3. Product name list" in "Product Name Structure" for details of package and product.
1

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FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
S-25A256B
Block Diagram
CS
SCK
SI
HOLD
WP
SO
Voltage Detector
Clock Counter
Data Register
Mode
Decoder
Output
Control
Circuit
Address Register
Status Register
Read Circuit
VCC
GND
Figure 1
Rev.1.2_02
Step-up Circuit
Page Latch
Memory
Cell
Array
Status
Memory Cell Array
Y Decoder
2

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Rev.1.2_02
FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
S-25A256B
AEC-Q100 Qualified
This IC supports AEC-Q100 for operation temperature grade 1.
Contact our sales office for details of AEC-Q100 reliability specification.
Product Name Structure
1. Product name
S-25A256B 0A J8T2 U 3
*1. Refer to the tape drawing.
Fixed
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package name (abbreviation) and IC packing specification*1
J8T2: 8-Pin SOP (JEDEC), Tape
Fixed
Product name
S-25A256B: 256 K-bit
Remark This IC is wafer level burn-in specification.
2. Package
Package Name
8-Pin SOP (JEDEC)
Table 1 Package Drawing Codes
Dimension
Tape
FJ008-A-P-SD
FJ008-D-C-SD
Reel
FJ008-D-R-S1
3. Product name list
Table 2
Product Name
Capacity
Package
S-25A256B0A-J8T2U3
256 K bit
8-Pin SOP (JEDEC)
Remark This IC is wafer level burn-in specification.
Quantity
4000 pcs / reel
Pin Configuration
1. 8-Pin SOP (JEDEC)
Top view
1
2
3
4
Figure 2
8
7
6
5
Pin No.
1
2
3
4
5
6
7
8
Symbol
CS *1
SO
WP *1
GND
SI*1
SCK*1
HOLD *1
VCC
Table 3
Description
Chip select input
Serial data output
Write protect input
Ground
Serial data input
Serial clock input
Hold input
Power supply
*1. Do not use it in "High-Z".
3

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FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
S-25A256B
Rev.1.2_02
Absolute Maximum Ratings
Table 4
Item Symbol
Absolute Maximum Rating
Unit
Power supply voltage
VCC
0.3 to 6.5
V
Input voltage
VIN
0.3 to 6.5
V
Output voltage
VOUT
0.3 to VCC 0.3
V
Operation ambient temperature Topr
40 to 125
°C
Storage temperature
Tstg
65 to 150
°C
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
Recommended Operating Conditions
Table 5
Item
Power supply voltage
High level input voltage
Low level input voltage
Symbol
VCC
VIH
VIL
Condition
Read
Write
VCC = 2.5 V to 5.5 V
VCC = 2.5 V to 5.5 V
Ta = 40C to 125C
Min. Max.
2.5 5.5
2.5 5.5
0.7 VCC
0.3
VCC 1.0
0.3 VCC
Unit
V
V
V
V
Pin Capacitance
Table 6
Item
Input capacitance
Output capacitance
Symbol
CIN
COUT
Condition
VIN = 0 V ( CS , SCK, SI, WP , HOLD )
VOUT = 0 V (SO)
(Ta = 25°C, f = 1.0 MHz, VCC = 5.0 V)
Min.
Max.
Unit
8 pF
10 pF
Endurance
Item Symbol
Endurance
NW
*1. For each address (Word: 8-bit)
Table 7
Operation Ambient Temperature
Ta = 25°C
Ta = 40°C to 85°C
Ta = 40°C to 105°C
Ta = 40°C to 125°C
Min.
106
7 105
5 105
3 105
Max.
Unit
cycle / word*1
cycle / word*1
cycle / word*1
cycle / word*1
Data Retention
Table 8
Item
Data retention
Symbol
Operation Ambient Temperature
Min.
Max.
Ta = 25°C
Ta = 40°C to 125°C
100
50
Unit
year
year
4

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Rev.1.2_02
FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
S-25A256B
DC Electrical Characteristics
Item
Symbol
Condition
Current
(read)
consumption
ICC1
No load at SO pin
Table 9
Ta = 40°C to 125°C
VCC = 2.5 V to 4.5 V
fSCK = 5.0 MHz
VCC = 4.5 V to 5.5 V
fSCK = 5.0 MHz
Min. Max. Min. Max.
2.0 2.5
Table 10
Item
Symbol
Condition
Current consumption
(write)
ICC2
No load at SO pin
Ta = 40°C to 125°C
VCC = 2.5 V to 5.5 V
fSCK = 5.0 MHz
Min. Max.
4.0
Table 11
Item
Symbol
Condition
Standby current
consumption
ISB
Input leakage current ILI
Output leakage current ILO
Low level
VOL1
output voltage
VOL2
High level
VOH1
output voltage
VOH2
CS = VCC,
SO = Open
Other inputs are
VCC or GND
VIN = GND to VCC
VOUT = GND to VCC
IOL = 2.0 mA
IOL = 1.5 mA
IOH = 2.0 mA
IOH = 0.4 mA
Ta = 40°C to 125°C
VCC = 2.5 V to 4.5 V
VCC = 4.5 V to 5.5 V
Min. Max. Min. Max.
8.0 10.0
2.0 2.0
2.0 2.0
- - - 0.4
0.4 0.4
- - 0.8 VCC
0.8 VCC 0.8 VCC
Unit
mA
Unit
mA
Unit
A
A
A
V
V
V
V
5