AT34C02-10PU-1.8 ATMEL [ATMEL Corporation], AT34C02-10PU-1.8 Datasheet

AT34C02-10PU-1.8

Manufacturer Part Number

AT34C02-10PU-1.8

Description

Two-wire Serial EEPROM with Permanent Software Write Protect

Manufacturer

ATMEL [ATMEL Corporation]

Datasheet

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Features

•

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-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP, 8-lead

TSSOP and 8-ball dBGA2 packages and is accessed via a two-wire serial interface. In

addition, it is available in 1.8V (1.8V to 5.5V) versions.

Table 1. Pin Configurations

Pin Name

A0 - A2

SDA

SCL

Permanent Software Write Protection for the First-half of the Array

Hardware Write Protection for the Entire Array

Low-voltage Operation

Internally Organized 256 x 8

Two-wire Serial Interface

Schmitt Trigger, Filtered Inputs for Noise Suppression

Bidirectional Data Transfer Protocol

100 kHz (1.8V) and 400 kHz (2.7V and 5.0V) Compatibility

16-byte Page Write Modes

Partial Page Writes Are Allowed

Self-timed Write Cycle (5 ms max)

High-reliability

Automotive Grade Devices Available

8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP, 8-lead TSSOP, and 8-ball dBGA2

Packages

Die Sales: Wafer Form, Waffle Pack, and Bumped Wafers

– Software Procedure to Verify Write Protect Status

– 1.8 (V

– Endurance: 1 Million Write Cycles

– Data Retention: 100 Years

GND

8-lead TSSOP

Function

Address Inputs

Serial Data

Serial Clock Input

Write Protect

= 1.8V to 5.5V)

VCC

SCL

SDA

GND

8-lead PDIP

8-lead SOIC

VCC

SCL

SDA

VCC

SCL

SDA

VCC

SDA

SCL

Bottom View

VCC

SDA

SCL

8-lead MAP

8-ball dBGA2

Bottom View

GND

Two-wire Serial

EEPROM

with Permanent

Software Write

Protect

2K (256 x 8)

AT34C02

Note:

Not recommended for new

design; please refer to

AT34CO2C datasheet.

Rev. 0958Q–SEEPR–1/07

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