 2009 Microchip Technology Inc.

DS21713K-page 1

24AA32A/24LC32A

Device Selection Table

Features:

• Single Supply with Operation down to 1.7V for



24AA32A devices, 2.5V for 24LC32A devices

• Low-Power CMOS Technology:

- Active current 1 mA, typical

- Standby current 1

A, typical

• 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

• ESD Protection > 4,000V

• More than 1 Million Erase/Write Cycles

• Data Retention > 200 Years

• Factory Programming Available

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

TSSOP, MSOP, DFN, TDFN, 5-lead SOT-23 and

Chip Scale

• 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. 24AA32A/24LC32A

(24XX32A*) 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

active

currents

of

only

1

A 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, SOIJ,

TSSOP, DFN, TDFN and MSOP packages. The

24XX32A is also available in the 5-lead SOT-23 and

Chip Scale packages.

Block Diagram

Package Types

Part

Number

Range

Max. Clock

Frequency

Temp.

Ranges

24AA32A

1.7-5.5

I

24LC32A

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/SOIJ/TSSOP

DFN/TDFN

A0

A1

A2

WP

SCL

SDA

8

7

6

5

1

2

3

4

SOT-23

1

2

34

5

WP

SCL

SDA

1

2

3

45

WP

SDA

SCL

(Top Down View,

Balls Not Visible)

Note

1:

Pins A0, A1 and A2 are not used by the 24XX32A (no internal connections).

2:

Available in I-temp, “AA” only.

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