24FC32| Datasheet

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Obsolete Device
Please use 24LC32A or 24LC65.

24FC32
32K 5.0V 1 MHz I2CTM Smart SerialTM EEPROM
Features
Voltage operating range: 4.5V to 5.5V - Maximum write current 3 mA at 5.5V - Maximum read current 150 uA at 5.5V - Standby current 1 uA typical 1 MHz SE2.bus two wire protocol Self-timed write cycle (including auto-erase) Power on/off data protection circuitry Endurance: - 10,000,000 Erase/Write cycles ensured for a 4K block - 1,000,000 E/W cycles ensured for a 28K block 8-byte page, or byte modes available 1 page x 8 line input cache (64 bytes) for fast write loads Schmitt Trigger inputs for noise suppression 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 - Commercial (C): - Industrial (I): 0 C -40 C to to +70 C +85 C
I/O

Package Types
PDIP A0 A1 A2 Vss SOIC A0 A1 A2 Vss 1 24FC32 2 3 4 8 7 6 5 Vcc NC SCL SDA 1 24FC32 2 3 4 8 7 6 5 Vcc NC SCL SDA

Block Diagram
A0 A1 A2 HV Generator

I/O Control Logic

Memory Control Logic

XDEC

EEPROM Array Page Latches

SCL

Cache

Description
The Microchip Technology Inc. 24FC32 is a 4K x 8 (32K bit) Serial Electrically Erasable PROM (EEPROM) with a high-speed 1 MHz SE2.bus whose protocol is functionally equivalent to the industry-standard I2C bus. This device has been developed for advanced, low power applications such as personal communications or data acquisition. The 24FC32 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 endurance memory for data that changes frequently. The 24FC32 is capable of both random and sequential reads up to the 32K boundary. Functional address lines allow up to eight 24FC32 devices on the same bus, for up to 256K bits address space. The 24FC32 is available in the standard 8-pin plastic DIP and 8-pin surface mount SOIC package.

SDA VCC VSS

YDEC

Sense AMP R/W Control

Pin Function Table
Name A0, A1, A2 VSS SDA SCL VCC NC Function User Configurable Chip Selects Ground Serial Address/Data I/O Serial Clock +4.5V to 5.5V Power Supply No Internal Connection

I2C is a trademark of Philips Corporation. Smart Serial is a trademark of Microchip Technology Inc.

2004 Microchip Technology Inc.

DS21126E-page 1