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Seiko Instruments Electronic Components Datasheet

S-25C128A Datasheet

SPI SERIAL E2PROM

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S-25C128A pdf
S-25C128A
www.sii-ic.com
© SII Semiconductor Corporation, 2009-2015
SPI SERIAL E2PROM
Rev.4.2_02_H
The S-25C128A is a SPI serial E2PROM which operates at high speed, with low current consumption and the wide range
operation. The S-25C128A has the capacity of 128 K-bit and the organization of 16384 words × 8-bit. Page write and
sequential read are available.
Features
Operating voltage range:
Read
Write
1.6 V to 5.5 V
1.7 V to 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 (VCC = 2.5 V to 5.5 V)
5.0 ms max.
64 bytes / page
Software, Hardware
25%, 50%, 100%
Monitors write to the memory by a status register
Function to prevent malfunction by monitoring clock pulse
Write protect function during the low power supply voltage
CMOS schmitt inputCS , SCK, SI, WP , HOLD
Endurance:
106cycles / word*1 (Ta = +25°C)
Data retention:
100 years (Ta = +25°C)
Memory capacity:
128 K-bit
Initial delivery state:
FFh, SRWD = 0, BP1 = 0, BP0 = 0
Operation temperature range:
Ta = 40°C to +85°C
Lead-free (Sn 100%), halogen-free*2
*1. For each address (Word: 8-bit)
*2. Refer to “Product Name Structure” for details.
Packages
8-Pin SOP (JEDEC)
8-Pin TSSOP
Caution This product is intended to use in general electronic devices such as consumer electronics, office
equipment, and communications devices. Before using the product in medical equipment or
automobile equipment including car audio, keyless entry and engine control unit, contact to SII
Semiconductor Corporation is indispensable.
1



Seiko Instruments Electronic Components Datasheet

S-25C128A Datasheet

SPI SERIAL E2PROM

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S-25C128A pdf
SPI SERIAL E2PROM
S-25C128A
Pin Configurations
1. 8-Pin SOP (JEDEC)
8-Pin SOP (JEDEC)
Top view
18
27
36
45
Figure 1
S-25C128A0I-J8T1U3
Rev.4.2_02_H
Table 1
Pin No. Symbol
Description
1
CS *1
Chip select input
2 SO Serial data output
3
WP *1
Write protect input
4
GND
Ground
5 SI*1 Serial data input
6
SCK*1
Serial clock input
7 HOLD *1 Hold input
8
VCC
Power supply
*1. Do not use it in high impedance.
2. 8-Pin TSSOP
8-Pin TSSOP
Top view
18
27
36
45
Figure 2
S-25C128A0I-T8T1U3
Table 2
Pin No. Symbol
Description
1
CS *1
Chip select input
2 SO Serial data output
3
WP *1
Write protect input
4
GND
Ground
5 SI*1 Serial data input
6
SCK*1
Serial clock input
7 HOLD *1 Hold input
8
VCC
Power supply
*1. Do not use it in high impedance.
Remark Refer to the “Package drawings” for the details.
2



Seiko Instruments Electronic Components Datasheet

S-25C128A Datasheet

SPI SERIAL E2PROM

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S-25C128A pdf
Rev.4.2_02_H
Block Diagram
Voltage Detector
CS
SCK
SI
HOLD
WP
SO
Clock Counter
Data Register
Mode
Decoder
Output
Control
Circuit
Address Register
Status Register
Read Circuit
VCC
GND
Figure 3
SPI SERIAL E2PROM
S-25C128A
Step-up Circuit
Page Latch
Memory
Cell
Array
Status
Memory Cell Array
Y Decoder
3




Part Number S-25C128A
Description SPI SERIAL E2PROM
Maker Seiko Instruments
Total Page 30 Pages
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