© 2009 Microchip Technology Inc.

DS22184A-page 1

24AA32AF/24LC32AF

Device Selection Table

Features:

• Single Supply with Operation down to 1.7V for

24AA32AF devices, 2.5V for 24LC32AF devices

• Low-Power CMOS Technology:

- Read current 400

μA, max.

- Standby current 1

μA, max. (I-temp)

• Packages with 3 Address Pins are Cascadable up

to Eight Devices

• Schmitt Trigger Inputs for Noise Suppression

• Output Slope Control to Eliminate Ground Bounce

• 100 kHz and 400 kHz Clock Compatibility

• Page Write Time 5 ms max.

• Self-Timed Erase/Write Cycle

• 32-Byte Page Write Buffer

• Hardware Write-Protect for 1/4 Array

(C00h-FFFh)

• ESD Protection > 4,000V

• More than 1 Million Erase/Write Cycles

• Data Retention > 200 Years

• Factory Programming Available

• Packages Include 8-lead PDIP, SOIC, TSSOP,

MSOP, TDFN and 5-lead SOT-23

• Pb-Free and RoHS Compliant

• Temperature Ranges:

- Industrial (I):

-40°C to +85°C

- Automotive (E): -40°C to +125°C

Description:

The Microchip Technology Inc. 24AA32AF/24LC32AF

(24XX32AF*) is a 32 Kbit Electrically Erasable PROM.

The device is organized as a single block of 4K x 8-bit

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

design permits operation down to 1.7V, with standby

and

read

currents

of

only

1

μA and 400 μA,

respectively. It has been developed for advanced, low-

power applications such as personal communications

or data acquisition. The 24XX32AF 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 24XX32AF

is available in the standard 8-pin PDIP, surface mount

SOIC, TSSOP, TDFN and MSOP packages. The

24XX32AF is also available in the 5-lead SOT-23

package.

Block Diagram

Package Types

Part

Number

Range

Max. Clock

Frequency

Temp.

Ranges

24AA32AF

1.7-5.5

I

24LC32AF

2.5-5.5

400 kHz

I, E

Note 1:

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

A0

A1

A2

WP

SCL

SDA

1

2

3

4

8

7

6

5

PDIP, MSOP, SOIC, TSSOP

SOT-23

1

2

34

5

WP

SCL

SDA

TDFN

A0

A1

A2

WP

SCL

SDA

8

7

6

5

1

2

3

4

32K I

*24XX32AF is used in this document as a generic part number for the 24AA32AF/24LC32AF devices.