 2002 Microchip Technology Inc.

DS21189F-page 1

24AA64/24LC64

Device Selection Table

Features

• Single supply with operation down to 1.8V

• Low power CMOS technology

- 1 mA active current typical

- 1 µA standby current (max.) (I-temp)

• Organized as 8 blocks of 8K bit (64K bit)

• 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) com-

patibility

• 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:

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 µA and 1 mA respectively.

It has been developed for advanced, low power appli-

cations such as personal communications or data

acquisition. The 24XX64 also has a page-write capabil-

ity 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.

Package Types

Block Diagram

Part

Number

V

CC

Range

Max Clock

Frequency

Temp

Ranges

24AA64

1.8-5.5

I

24LC64

2.5-5.5

400 kHz

I, E

Note 1: 100 kHz for V

- Industrial (I):

-40°C to

+85°C

- Automotive (E):

-40°C to +125°C

A0

A1

A2

Vss

1

2

3

4

8

7

6

5

Vcc

WP

SCL

SDA

PDIP/SOIC/TSSOP/MSOP

WP

Vcc

A0

A1

SCL

SDA

Vss

A2

1

2

3

4

8

7

6

5

ROTATED TSSOP

(24AA64X/24LC64X)

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

V

CC

V

SS

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