AT24C32A-10TQ-2.7 データシートの表示（PDF） - Atmel Corporation

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AT24C32A-10TQ-2.7

Two-wire Automotive Serial EEPROM

Atmel Corporation 

Features

• Standard-Voltage Operation

– 2.7 (VCC = 2.7V to 5.5V)

• Internally Organized 4096 x 8 (32K), 8192 x 8 (64K)

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

• Two-wire Serial Interface

• Schmitt Trigger, Filtered Inputs for Noise Suppression

• Bidirectional Data Transfer Protocol

• 400 kHz Clock Rate

• Write Protect Pin for Hardware Data Protection

• 32-byte Page Write Mode (Partial Page Writes Allowed)

• Self-timed Write Cycle (5 ms Max)

• High Reliability

– Endurance: 1 Million Write Cycles

– Data Retention: 100 Years

• Lead-free/Halogen-free Devices Available

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

Description

The AT24C32A/64A provides 32,768/65,536 bits of serial electrically erasable and

programmable read only memory (EEPROM) organized as 4096/8192 words of 8 bits

each. The device’s cascadable feature allows up to 8 devices to share a common two-

wire bus. The device is optimized for use in many automotive applications where low

power and low voltage operation are essential. The AT24C32A/64A is available in

space saving 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via

a 2-wire serial interface and is available in a 2.7V (2.7V to 5.5V) version.

Two-wire

Automotive

Serial EEPROM

32K (4096 x 8)

64K (8192 x 8)

AT24C32A

AT24C64A

Table 1. Pin Configuration

Pin Name Function

A0 – A2

Address Inputs

SDA

Serial Data

SCL

Serial Clock Input

WP

Write Protect

8-lead SOIC

A0 1

A1 2

A2 3

GND 4

8 VCC

7 WP

6 SCL

5 SDA

8-lead TSSOP

A0 1

A1 2

A2 3

GND 4

8 VCC

7 WP

6 SCL

5 SDA

5120D–SEEPR–6/08

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