E
CAT34WC02
2-kb I2C Serial EEPROM, Serial Presence Detect
TM
FEATURES
■ 400 kHz (5 V) and 100 kHz (1.7 V) I2C bus
■ 1,000,000 program/erase cycles
■ 100 year data retention
compatible
■ 1.7 to 5.5 volt operation
■ 8-pin DIP, 8-pin SOIC and 8-pin TSSOP packages
- “Green” package option available
■ 256 x 8 memory organization
■ Low power CMOS technology
■ 16-byte page write buffer
■ Industrial and automotive temperature ranges
■ Self-timed write cycle with auto-clear
■ Software write protection for lower 128 bytes
■ Hardware write protect
DESCRIPTION
a 16-byte page write buffer. The device operates via the
I2C bus serial interface and is available in 8-pin DIP,
8-pin SOIC or 8-pin TSSOP packages.
The CAT34WC02 is a 2-kb Serial CMOS EEPROM
internallyorganizedas256wordsof8bitseach.Catalyst’s
advanced CMOS technology substantially reduces
device power requirements. The CAT34WC02 features
PIN CONFIGURATION
BLOCK DIAGRAM
DIP Package (P, L)
SOIC Package (J, W)
EXTERNAL LOAD
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
A
A
A
V
A
A
A
SENSE AMPS
SHIFT REGISTERS
0
1
2
CC
0
1
2
V
CC
WP
D
OUT
WP
ACK
SCL
SDA
SCL
SDA
V
V
CC
V
V
SS
SS
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
SS
TSSOP Package (U, Y)
START/STOP
SDA
WP
1
2
3
4
8
7
6
5
LOGIC
A
A
A
0
1
2
V
CC
WP
SCL
SDA
E2PROM
XDEC
V
SS
CONTROL
LOGIC
PIN FUNCTIONS
DATA IN STORAGE
Pin Name
Function
A0, A1, A2 Device Address Inputs
HIGH VOLTAGE/
TIMING CONTROL
SDA
SCL
WP
Serial Data/Address
Serial Clock
SCL
STATE COUNTERS
Write Protect
SLAVE
ADDRESS
COMPARATORS
A
0
A1
A2
VCC
VSS
1.7 V to 5.5 V Power Supply
Ground
24CXX F03
2
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I C Bus Protocol.
© 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc No. 1003, Rev. L
1