M
FEATURES
24LC01B/02B MODULES
ISO MODULE LAYOUT
1K/2K I
2
C
™
Serial EEPROMs in ISO Micromodules
• ISO 7816 Compliant pad locations
• Low power CMOS technology
- 1 mA active current typical
- 10
µ
A standby current typical at 5.5V
• Organized as a single block of 128 bytes (128 x 8)
or 256 bytes (256 x 8)
• 2-wire serial interface bus, I
2
C™ compatible
• 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:
- Commercial (C):
0
°
C to +70
°
C
V
DD
V
SS
SCL
SDA
BLOCK DIAGRAM
HV GENERATOR
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.
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
XDEC
EEPROM
ARRAY
PAGE LATCHES
SDA SCL
YDEC
V
CC
V
SS
SENSE AMP
R/W CONTROL
©
1997 Microchip Technology Inc.
DS21222A-page 1