© 1996 Microchip Technology Inc.

Preliminary

DS21163B-page 1

FEATURES

• Voltage operating range: 4.5V to 5.5V

- Maximum write current 3 mA at 5.5V

- Standby current 1

µA typical at 5.0V

™ compatible

• 100 kHz and 400 kHz compatibility

• Self-timed ERASE and WRITE cycles

• Power on/off data protection circuitry

• Hardware write protect

• 1,000,000 Erase/Write cycles guaranteed

• 32-byte page or byte write modes available

• Schmitt trigger filtered inputs for noise suppres-

sion

• Output slope control to eliminate ground bounce

• 2 ms typical write cycle time, byte or page

• Up to eight devices may be connected to the

same bus for up to 256K bits total memory

• Electrostatic discharge protection > 4000V

• Data retention > 200 years

• 8-pin PDIP and SOIC packages

• Temperature ranges

DESCRIPTION

The Microchip Technology Inc. 24C32A is a 4K x 8 (32K

bit) Serial Electrically Erasable PROM. It has been

developed for advanced, low power applications such

as personal communications or data acquisition. The

24C32A also has a page-write capability of up to 32

bytes of data. The 24C32A is capable of both random

and sequential reads up to the 32K boundary. Func-

tional address lines allow up to eight 24C32A devices

on the same bus, for up to 256K bits address space.

Advanced CMOS technology and broad voltage range

make this device ideal for low-power/low-voltage, non-

volatile code and data applications. The 24C32A is

available in the standard 8-pin plastic DIP and both 150

mil and 200 mil SOIC packaging.

- Commercial (C):

0˚C to

70˚C

- Industrial (I):

-40˚C to

+85˚C

- Automotive (E):

-40˚C to +125˚C

PACKAGE TYPES

BLOCK DIAGRAM

1

2

3

4

8

7

6

5

A0

A1

A2

Vss

Vcc

WP

SCL

SDA

A0

A1

A2

Vss

1

2

3

4

8

7

6

5

Vcc

WP

SCL

SDA

PDIP

SOIC

HV GENERATOR

EEPROM

ARRAY

PAGE LATCHES

YDEC

XDEC

SENSE AMP

R/W CONTROL

MEMORY

CONTROL

LOGIC

I/O

CONTROL

LOGIC

WP

A0..A2

SDA

SCL

WP

I/O

24C32A

This document was created with FrameMaker404