Datasheet > AT25256-10PC-2.7

AT25256-10PC-2.7

更新时间： 2022-12-13 01:14:49

品牌	Logo	应用领域
爱特美尔 - ATMEL		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
17页	233K
描述
SPI Serial EEPROMs

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数据手册

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AT25256-10PC-2.7 数据手册

Features

• Serial Peripheral Interface (SPI) Compatible

• Supports SPI Modes 0 (0,0) and 3 (1,1)

• Low Voltage and Standard Voltage Operation

– 5.0 (V_CC= 4.5V to 5.5V)

– 2.7 (V_CC= 2.7V to 5.5V)

– 1.8 (V_CC= 1.8V to 3.6V)

• 3 MHz Clock Rate

• 64-Byte Page Mode and Byte Write Operation

• Block Write Protection

– Protect 1/4, 1/2, or Entire Array

SPI Serial

EEPROMs

128K (16,384 x 8)

256K (32,768 x 8)

• Write Protect (WP) Pin and Write Disable Instructions for

Both Hardware and Software Data Protection

• Self-Timed Write Cycle (5 ms Typical)

• High Reliability

– Endurance: 100,000 Write Cycles

– Data Retention: >200 Years

– ESD Protection: >4000V

• Automotive Grade and Extended Temperature Devices Available

• 8-Pin PDIP, 8-Pin EIAJ SOIC, 8-Pin and 16-Pin JEDEC SOIC, 14-Pin and 20-Pin TSSOP,

and 8-Pin Leadless Array Packages

AT25128

AT25256

Description

The AT25128/256 provides 131,072/262,144 bits of serial electrically erasable pro-

grammable read only memory (EEPROM) organized as 16,384/32,768 words of 8 bits

each. The device is optimized for use in many industrial and commercial applications

where low power and low voltage operation are essential. The devices are available in

(continued)

Pin Configurations

14-Lead TSSOP

Pin Name

Function

Chip Select

VCC

HOLD

SCK

Serial Data Clock

Serial Data Input

Serial Data Output

Ground

GND

SCK

20-Lead TSSOP*

GND

VCC

16-Pin SOIC

Power Supply

Write Protect

Suspends Serial Input

No Connect

VCC

HOLD

VCC

HOLD

GND

SCK

Don't Connect

GND

SCK

8-Pin PDIP

8-Pin SOIC

8-Pin Leadless Array

VCC

HOLD

SCK

VCC

HOLD

SCK

HOLD

SCK

GND

Bottom View

Rev. 0872E–08/98

*Note: Pins 3, 4 and 17, 18 are internally connected for 14-lead TSSOP socket compatibility.

12 3 4 5 6 7...17

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