AT24C01B データシートの表示（PDF） - Atmel Corporation

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AT24C01B

Two-wire Automotive Temperature Serial EEPROM 1K (128 x 8) 2K (256 x 8) 4K (512 x 8) 8K (1024 x 8)

Atmel Corporation 

1. Features

• Medium-voltage and Standard-voltage Operation

– 2.5 (VCC = 2.5V to 5.5V)

• Automotive Temperature Range –40°C to 125°C

• Internally Organized 128 x 8 (1K), 256 x 8 (2K), 512 x 8 (4K) or 1024 x 8 (8K)

• Two-wire Serial Interface

• Schmitt Trigger, Filtered Inputs for Noise Suppression

• Bidirectional Data Transfer Protocol

• 400 kHz (2.5V) Compatibility

• Write Protect Pin for Hardware Data Protection

• 8-byte Page (1K, 2K) or 16-byte Page (4K, 8K) Write Modes

• Partial Page Writes are Allowed

• Self-timed Write Cycle (5 ms max)

• High-reliability

– Endurance: 1 Million Write Cycles

– Data Retention: 100 Years

• 8-lead JEDEC SOIC and 8-lead TSSOP Packages

2. Description

The AT24C01B/02B/04B/08B provides 1024/2048/4096/8192 bits of serial electrically

erasable and programmable read-only memory (EEPROM) organized as

128/256/512/1024 words of 8 bits each. The device is optimized for use in many auto-

motive applications where low-power and low-voltage operation are essential. The

AT24C01B/02B/04B/08B is available in space-saving 8-lead JEDEC SOIC and 8-lead

TSSOP packages and is accessed via a two-wire serial interface. In addition, the

entire family is available in 2.5V (2.5V to 5.5V) versions.

Table 2-1.

Pin Name

A0 − A2

SDA

SCL

WP

Pin Configurations

Function

Address Inputs

Serial Data

Serial Clock Input

Write Protect

8-lead SOIC

A0 1

A1 2

A2 3

GND 4

8 VCC

7 WP

6 SCL

5 SDA

8-lead TSSOP

Two-wire

Automotive

Temperature

Serial EEPROM

1K (128 x 8)

2K (256 x 8)

4K (512 x 8)

8K (1024 x 8)

AT24C01B

AT24C02B

AT24C04B

AT24C08B

A0 1

A1 2

A2 3

GND 4

8 VCC

7 WP

6 SCL

5 SDA

8517C–SEEPR–01/09

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