© 1997 Microchip Technology Inc.

DS21222A-page 1

M

24LC01B/02B MODULES

FEATURES

• ISO 7816 Compliant pad locations

• Low power CMOS technology

- 1 mA active current typical

- 10

µA standby current typical at 5.5V

• Organized as a single block of 128 bytes (128 x 8)

or 256 bytes (256 x 8)

• 100 kHz (2.5V) and 400 kHz (5V) compatibility

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

• Page-write buffer for up to 8 bytes

• 2 ms typical write cycle time for page-write

• ESD protection > 4 kV

• 1,000,000 E/W cycles guaranteed

• Data retention > 200 years

• Temperature ranges available:

DESCRIPTION

The Microchip Technology Inc. 24LC01B and 24LC02B

are 1K-bit and 2K-bit Electrically Erasable PROMs in

ISO modules for smart card applications. The devices

are organized as a single block of 128 x 8-bit or 256 x

8-bit memory with a two-wire serial interface. The

24LC01B and 24LC02B also have page-write capabil-

ity for up to 8 bytes of data.

ISO MODULE LAYOUT

BLOCK DIAGRAM

- Commercial (C):

0

°C to +70°C

SDA

SCL

HV GENERATOR

EEPROM

ARRAY

PAGE LATCHES

YDEC

XDEC

SENSE AMP

R/W CONTROL

MEMORY

CONTROL

LOGIC

I/O

CONTROL

LOGIC

SDA

SCL