24C32A| Datasheet

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Obsolete Device
Please use 24LC32A.

24C32A
32K 5.0V I2CTM Serial EEPROM
FEATURES
Voltage operating range: 4.5V to 5.5V - Maximum write current 3 mA at 5.5V - Standby current 1 uA typical at 5.0V 2-wire serial interface bus, I2C 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 suppression 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 - Commercial (C): 0 C to 70 C - Industrial (I): -40 C to +85 C - Automotive (E): -40 C to +125 C

PACKAGE TYPES
PDIP A0 A1 A2 Vss 1 24C32A 2 3 4 8 7 6 5 Vcc WP SCL SDA

SOIC

A0 A1 A2 Vss

1 24C32A 2 3 4

8 7 6 5

Vcc WP SCL SDA

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. Functional 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, nonvolatile code and data applications. The 24C32A is available in the standard 8-pin plastic DIP and both 150 mil and 200 mil SOIC packaging.

BLOCK DIAGRAM
A0 A1 A2 WP HV GENERATOR

I/O CONTROL LOGIC

MEMORY CONTROL LOGIC

XDEC

EEPROM ARRAY PAGE LATCHES

I/O

SCL
YDEC

SDA VCC VSS
SENSE AMP R/W CONTROL

I2C is a trademark of Philips Corporation.

2004 Microchip Technology Inc.

DS21163E-page 1

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24C32A DATASHEET