24LC024/24LC025
2K 2.2V I2C™ Serial EEPROM
PACKAGE TYPES
FEATURES
PDIP/SOIC
• Single supply with operation from 2.2 to 5.5V
• Low power CMOS technology
- 1 mA active current typical
A0
1
8
Vcc
- 10 µA standby current typical at 5.5V
• Organized as a single block of 128 bytes (256 x 8)
• Hardware write protection for entire array
(24LC024)
A1
A2
2
3
7
6
WP*
SCL
• 2-wire serial interface bus, I2C compatible
• 100kHz and 400kHz compatibility
• Page-write buffer for up to 16 bytes
• Self-timed write cycle (including auto-erase)
• 3.5 ms typical write cycle time for page write
• Address lines allow up to eight devices on bus
• 1,000,000 erase/write cycles guaranteed
• ESD protection > 4,000V
Vss
4
5
SDA
TSSOP
• Data retention > 200 years
• 8-pin PDIP, SOIC or TSSOP packages
• Available for extended temperature ranges
1
8
A0
A1
VCC
2
7
WP*
- Commercial (C):
- Industrial (I):
0°C to +70°C
-40°C to +85°C
3
4
6
5
A2
VSS
SCL
SDA
DESCRIPTION
*WP pin available only on 24LC024. This
pin has no internal connection on 24LC025
The Microchip Technology Inc. 24LC024/24LC025 is a
2K bit Serial Electrically Erasable PROM with a voltage
range of 2.2V to 5.5V. The device is organized as a
single block of 256 x 8-bit memory with a 2-wire serial
interface. Low current design permits operation with
typical standby and active currents of only 10 µA and 1
mA respectively. The device has a page-write capability
for up to 16 bytes of data. Functional address lines
allow the connection of up to eight 24LC024/24LC025
devices on the same bus for up to 16K bits of contigu-
ous EEPROM memory. The device is available in the
standard 8-pin PDIP, 8-pin SOIC (150 mil), and TSSOP
packages.
BLOCK DIAGRAM
WP*
A0 A1 A2
HV Generator
I/O
Control
Logic
Memory
Control
Logic
EEPROM
Array
XDEC
SDA
SCL
VCC
VSS
Write Protect
Circuitry
YDEC
SENSE AMP
R/W CONTROL
*WP pin available only on 24LC024. This
pin has no internal connection on 24LC025
1999 Microchip Technology Inc.
DS21210D-page 1