© 1996 Microchip Technology Inc.

DS21056F-page 1

FEATURES

• Voltage operating range: 1.8V to 6.0V

- Peak write current 3 mA at 6.0V

- Maximum read current 150

µA at 6.0V

- Standby current 1

µA typical

™

compatible

• 8 byte page, or byte modes available

• 2 ms typical write cycle time, byte or page

• 64-byte line input cache for fast write loads

• Up to 8 devices may be connected to the same

bus for up to 512K bits total memory

• 100 kHz (1.8V) and 400 kHz (5.0V) compatibility

• Programmable block security options

• Programmable endurance options

• Schmitt trigger, filtered inputs for noise suppres-

sion

• Output slope control to eliminate ground bounce

• Self-timed ERASE and WRITE cycles

• Power on/off data protection circuitry

• Endurance:

- 10,000,000 E/W cycles guaranteed for a High

Endurance Block

- 1,000,000 E/W cycles guaranteed for a Stan-

dard Endurance Block

• Electrostatic discharge protection > 4000V

• Data retention > 200 years

• 8-pin PDIP/SOIC packages

• Temperature ranges

DESCRIPTION

The Microchip Technology Inc. 24AA65 is a “smart” 8K x

8 Serial Electrically Erasable PROM. This device has

been developed for advanced, low power applications

such as personal communications, and provides the

systems designer with flexibility through the use of many

new user-programmable features. It is capable of opera-

tion down to 1.8V, the end-of-life voltage for 2 “AA” bat-

tery cells for most popular battery technologies.The

24AA65 offers a relocatable 4K bit block of ultra-high-

endurance memory for data that changes frequently. The

remainder of the array, or 60K bits, is rated at 1,000,000

ERASE/WRITE (E/W) cycles guaranteed. The 24AA65

features an input cache for fast write loads with a capac-

ity of eight pages, or 64 bytes. This device also features

programmable security options for E/W protection of crit-

ical data and/or code of up to fifteen 4K blocks. Func-

tional address lines allow the connection of up to eight

- Commercial (C):

0

°C to +70°C

24LC65's on the same bus for up to 512K bits contigu-

ous EEPROM memory. Advanced CMOS technology

makes this device ideal for low-power non-volatile code

and data applications. The 24AA65 is available in the

standard 8-pin plastic DIP and 8-pin surface mount

SOIC package.

24AA65

PACKAGE TYPES

BLOCK DIAGRAM

A0

A1

A2

1

2

3

4

8

7

6

5

NC

SCL

SDA

A0

A1

A2

1

2

3

4

8

7

6

5

NC

SCL

SDA

PDIP

SOIC

HV Generator

EEPROM ARRAY

Page Latches

Buffer

YDEC

Vcc

Vss

I/O

Control

Logic

Memory

Control

Logic

SCL

SDA

A0..A2

XDEC

Sense AMP

R/W Control

I/O

Smart Serial is a trademark of Microchip Technology Inc.

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