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Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays

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TSZ02201-0R2R0G100640-1-2

04.Dec.2014 Rev.002

©2013 ROHM Co., Ltd. All rights reserved.

TSZ22111･14･001

www.rohm.com

Serial EEPROM Series Standard EEPROM

SPI BUS EEPROM

BR25G256-3

General Description

BR25G256-3 is a 256Kbit serial EEPROM of SPI BUS interface.

Features



High Speed Clock Action up to 20MHz (Max)



Wait Function by HOLDB Terminal



Part or Whole of Memory Arrays Settable as Read

only Memory Area by Program



1.6V to 5.5V Single Power Source Operation Most

Suitable for Battery Use.



UP to 64 Byte in Page Write Mode.



For SPI bus interface (CPOL, CPHA) = (0, 0), (1, 1)



Self-timed Programming Cycle



Low Current Consumption



At Write Action (5V)

: 0.6mA (Typ)



At Read Action (5V)

: 2.0mA (Typ)



At Standby Action (5V) : 0.1µA (Typ)



Address Auto Increment Function at Read Action



Prevention of Write Mistake



Write Prohibition at Power On



Write Prohibition by Command Code (WRDI)



Write Prohibition by WPB Pin



Write Prohibition Block Setting by Status Registers

(BP1, BP0)



Prevention of Write Mistake at Low Voltage



More than 100 years Data Retention.



More than 1 Million Write Cycles.



Bit Format 32K×8



Initial Delivery Data

Memory Array: FFh

Status Register: WPEN, BP1, BP0 : 0

TSSOP-B8

3.00mm x 6.40mm x 1.20mm

SOP8

5.00mm x 6.20mm x 1.71mm

DIP-T8

9.30mm x 6.50mm x 7.10mm

SOP- J8

4.90mm x 6.00mm x 1.65mm

Figure 1.

Datasheet