S-25A256B Datasheet PDF - Seiko


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S-25A256B
Seiko

Part Number S-25A256B
Description OPERATION SPI SERIAL E2PROM
Page 23 Pages

S-25A256B datasheet pdf
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S-25A256B
www.sii-ic.com
© Seiko Instruments Inc., 2011-2014
FOR AUTOMOTIVE 125°C OPERATION
SPI SERIAL E2PROM
Rev.1.2_00
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 SII 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 = +25°C)
3 × 105 cycle / word *2 (Ta = +125°C)
Data retention:
100 years (Ta = +25°C)
50 years (Ta = +125°C)
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.
Seiko Instruments Inc.
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_00
Step-up Circuit
Page Latch
Memory
Cell
Array
Status
Memory Cell Array
Y Decoder
2 Seiko Instruments Inc.



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Rev.1.2_00
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".
Seiko Instruments Inc.
3



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FOR AUTOMOTIVE 125°C OPERATION SPI SERIAL E2PROM
S-25A256B
Rev.1.2_00
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 = 40°C to +125°C
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 Seiko Instruments Inc.




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