Datasheet > 存储 > EEPROM> AT34C02

AT34C02

更新时间： 2024-11-19 22:05:55

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
12页	187K
描述
2-Wire Serial EEPROM with Permanent Software Write Protect

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中文翻译

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数据手册

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AT34C02 数据手册

Features

• Permanent Software Write Protection for the First-Half of the Array

– Software Procedure to Verify Write Protect Status

• Hardware Write Protection for the Entire Array

• 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 5.5V)

• Internally Organized 256 x 8

• 2-Wire Serial Interface

• Schmitt Trigger, Filtered Inputs for Noise Suppression

• Bidirectional Data Transfer Protocol

• 100 KHz (1.8V and 2.7V) and 400 KHz (5.0V) Compatibility

• 16-Byte Page Write Modes

2-Wire Serial

EEPROM

• Partial Page Writes Are Allowed

with Permanent

Software Write

Protect

• Self-Timed Write Cycle (10 ms max)

• High Reliability

– Endurance: 1 Million Write Cycles

– Data Retention: 100 Years

– ESD Protection: >3,000V

• Automotive Grade and Extended Temperature Devices Available

• 8-Pin PDIP, 8-Pin JEDEC SOIC and 8-Pin TSSOP Packages

2K (256 x 8)

Description

The AT34C02 provides 2048 bits of serial electrically erasable and programmable

read only memory (EEPROM) organized as 256 words of 8 bits each. The first-half of

the device incorporates a software write protection feature while hardware write pro-

tection for the entire array is available via an external pin as well. Once the software

write protection is enabled, by sending a special command to the device, it cannot be

reversed. The hardware write protection is controlled with the WP pin and can be used

to protect the entire array, whether or not the software write protection has been

enabled. This allows the user to protect none, first-half, or all of the array depending

on the application. The device is optimized for use in many industrial and commercial

applications where low power and low voltage operations are essential. The AT34C02

is available in space saving 8-pin PDIP, 8-pin JEDEC SOIC, and 8-pin TSSOP pack-

ages and is accessed via a 2-wire serial interface. In addition, it is available in 5.0V

(4.5V to 5.5V), 2.7V (2.7V to 5.5V), and 1.8V (1.8V to 5.5V) versions.

AT34C02

2-Wire Serial

EEPROM with

Permanent

Software Write

Protec

Pin Configurations

8-Pin SOIC

Pin Name

A0 to A2

SDA

Function

VCC

Address Inputs

Serial Data

SCL

SDA

GND

SCL

Serial Clock Input

Write Protect

8-Pin TSSOP

8-Pin PDIP

VCC

SCL

SDA

SCL

SDA

GND

Rev. 0958D–07/98

GND

12 3 4 5 6 7...12

中文翻译

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与AT34C02相关器件

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AT34C02_07	ATMEL	获取价格	Two-wire Serial EEPROM with Permanent Software Write Protect
AT34C02-10PC	ATMEL	获取价格	2-Wire Serial EEPROM with Permanent Software Write Protect
AT34C02-10PC-1.8	ATMEL	获取价格	2-Wire Serial EEPROM with Permanent Software Write Protect
AT34C02-10PC-2.7	ATMEL	获取价格	2-Wire Serial EEPROM with Permanent Software Write Protect
AT34C02-10PI	ATMEL	获取价格	2-Wire Serial EEPROM with Permanent Software Write Protect
AT34C02-10PI-1.8	ATMEL	获取价格	2-Wire Serial EEPROM with Permanent Software Write Protect
AT34C02-10PI-2.7	ATMEL	获取价格	2-Wire Serial EEPROM with Permanent Software Write Protect
AT34C02-10PU-1.8	ATMEL	获取价格	Two-wire Serial EEPROM with Permanent Software Write Protect
AT34C02-10TC	ATMEL	获取价格	2-Wire Serial EEPROM with Permanent Software Write Protect
AT34C02-10TC-1.8	ATMEL	获取价格	2-Wire Serial EEPROM with Permanent Software Write Protect

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