24C64| Datasheet

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24AA64/24LC64
64K I2CTM Serial EEPROM
Device Selection Table
Part Number 24AA64 24LC64 VCC Range 1.8-5.5 2.5-5.5 Max Clock Frequency 400 kHz(1) 400 kHz Temp Ranges I I, E

Description
The Microchip Technology Inc. 24AA64/24LC64 (24XX64*) is a 64 Kbit Electrically Erasable PROM. The device is organized as eight blocks of 1K x 8-bit memory with a 2-wire serial interface. Low voltage design permits operation down to 1.8V with standby and active currents of only 1 uA and 1 mA respectively. It has been developed for advanced, low power applications such as personal communications or data acquisition. The 24XX64 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 512 Kbits address space. The 24XX64 is available in the standard 8-pin PDIP, surface mount SOIC, TSSOP and MSOP packages.

Note 1: 100 kHz for VCC <2.5V

Features
Single supply with operation down to 1.8V Low power CMOS technology - 1 mA active current typical - 1 uA standby current (max.) (I-temp) Organized as 8 blocks of 8K bit (64K bit) 2-wire serial interface bus, I2CTM compatible Cascadable for up to eight devices Schmitt Trigger inputs for noise suppression Output slope control to eliminate ground bounce 100 kHz (24AA64) and 400 kHz (24LC64) compatibility Self-timed write cycle (including auto-erase) Page-write buffer for up to 32 bytes 2 ms typical write cycle time for page-write Hardware write protect for entire memory Can be operated as a serial ROM Factory programming (QTP) available ESD protection > 4,000V 1,000,000 erase/write cycles Data retention > 200 years 8-lead PDIP, SOIC, TSSOP, and MSOP package Available temperature ranges: - Industrial (I): -40 C to +85 C - Automotive (E): -40 C to +125 C

Package Types
PDIP/SOIC/TSSOP/MSOP A0 1 A1 2 A2 3 Vss 4 8 Vcc 7 WP 6 SCL 5 SDA ROTATED TSSOP (24AA64X/24LC64X) WP Vcc A0 A1 1 2 3 4 8 7 6 5 SCL SDA Vss A2 24XX64X

Block Diagram
A0 A1 A2 WP
HV GENERATOR

24XX64

I/O CONTROL LOGIC

MEMORY CONTROL LOGIC

XDEC

EEPROM ARRAY PAGE LATCHES

I/O

SCL

YDEC

SDA VCC VSS

SENSE AMP R/W CONTROL

*24XX64 is used in this document as a generic part number for the 24AA64/24LC64 devices.

2002 Microchip Technology Inc.

DS21189F-page 1

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24C64 DATASHEET