 2004 Microchip Technology Inc.

DS21061H-page 1

FEATURES

• Voltage operating range: 4.5V to 5.5V

- Peak write current 3 mA at 5.5V

- Maximum read current 150

µA at 5.5V

- Standby current 1

µA typical



compatible

- Including 100 kHz and 400 kHz modes

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

• Power on/off data protection circuitry

• Endurance:

- 10,000,000 Erase/Write cycles

guaranteed for High Endurance Block

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

Standard Endurance Block

• 8 byte page, or byte modes available

• 1 page x 8 line input cache (64 bytes) for fast write

loads

• 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 8 chips 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/SOIC packages

•

Temperature ranges

DESCRIPTION

The Microchip Technology Inc. 24C32 is a 4K x 8 (32K

bit) Serial Electrically Erasable PROM. This device has

been developed for advanced, low power applications

such as personal communications or data acquisition.

The 24C32 features an input cache for fast write loads

with a capacity of eight 8-byte pages, or 64 bytes. It

also features a fixed 4K-bit block of ultra-high endur-

ance memory for data that changes frequently. The

24C32 is capable of both random and sequential reads

up to the 32K boundary. Functional address lines allow

up to eight 24C32 devices on the same bus, for up to

256K bits address space. Advanced CMOS technol-

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

code and data applications. The 24C32 is available in

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

SOIC package

- Commercial (C):

0°C to

+70°C

- Industrial (I):

-40°C to

+85°C

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

YDEC

XDEC

SENSE AMP

R/W CONTROL

MEMORY

CONTROL

LOGIC

I/O

CONTROL

LOGIC

SDA

SCL

I/O

A2

A1

A0

CACHE

24C32

Smart Serial is a trademark of Microchip Technology Inc.

Obsolete Device

Please use 24LC32A or 24LC65.