 2003 Microchip Technology Inc.

DS21713D-page 1

24AA32A/24LC32A

Device Selection Table

Features

• Single supply with operation down to 1.8V

• Low-power CMOS technology

- 1 mA active current typical

-1

µA standby current (max.) (I-temp)

• Organized as 4 blocks of 8K bits (32K bit)

• Cascadable for up to eight devices

• Schmitt Trigger inputs for noise suppression

• Output slope control to eliminate ground bounce

• 100 kHz (<2.5V) and 400 kHz (

≥2.5V)

compatibility

• Self-timed write cycle (including auto-erase)

• Page write buffer for up to 32 bytes

• 2 ms typical write cycle time for page write

• Hardware write-protect for entire memory

• Can be operated as a serial ROM

• Factory programming (QTP) available

• ESD protection > 4,000V

• 1,000,000 erase/write cycles

• Data retention > 200 years

• 8-lead PDIP, SOIC, TSSOP and MSOP packages

• Standard and Pb-free finishes available

• Available temperature ranges:

- Industrial (I): -40°C to +85°C

- Automotive (E): -40°C to +125°C

Description

The Microchip Technology Inc. 24AA32A/24LC32A

(24XX32A*) is a 32 Kbit Electrically Erasable PROM.

The device is organized as four blocks of 8K x 8-bit

memory with a 2-wire serial interface. Low-voltage

design permits operation down to 1.8V, with standby

and

active

currents

of

only

1

µA and 1 mA,

respectively. It has been developed for advanced, low-

power applications such as personal communications

or data acquisition. The 24XX32A also has a page write

capability for up to 32 bytes of data. Functional address

lines allow up to eight devices on the same bus, for up

to 256 Kbits address space. The 24XX32A is available

in the standard 8-pin PDIP, surface mount SOIC,

TSSOP and MSOP packages.

Package Types

Block Diagram

Part

Number

Range

Max Clock

Frequency

Temp

Ranges

24AA32A

1.8-5.5

I

24LC32A

2.5-5.5

400 kHz

I, E

Note 1:

A0

A1

A2

Vss

1

2

3

4

8

7

6

5

Vcc

WP

SCL

SDA

PDIP/SOIC/TSSOP/MSOP

WP

Vcc

A0

A1

SCL

SDA

Vss

A2

1

2

3

4

8

7

6

5

ROTATED TSSOP

(24AA32AX/24LC32AX)

HV Generator

EEPROM

Array

Page Latches

YDEC

XDEC

Sense Amp.

R/W Control

I/O

Control

Logic

I/O

Memory

Control

Logic

A0

A1

WP

A2

SCL

SDA

Vcc

*24XX32A is used in this document as a generic part number for the 24AA32A/24LC32A devices.