CAT34WC02
2-kb I2C Serial EEPROM, Serial Presence Detect
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 TSSOP package
■ Low power CMOS technology
■ 16-byte page write buffer
- “Green” package option available
■ 256 x 8 memory organization
■ Hardware write protect
■ Industrial temperature range
■ Self-timed write cycle with auto-clear
■ Software write protection for lower 128 bytes
DESCRIPTION
a 16-byte page write buffer. The device operates via the
I2C bus serial interface and is available in an 8-pin
TSSOP package.
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
TSSOP Package (U, Y, GY)
EXTERNAL LOAD
SENSE AMPS
SHIFT REGISTERS
D
1
2
3
4
8
7
6
5
A
A
A
OUT
0
1
2
V
CC
WP
ACK
SCL
SDA
V
V
CC
SS
V
SS
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
PIN FUNCTIONS
START/STOP
SDA
WP
LOGIC
Pin Name
Function
A0, A1, A2 Device Address Inputs
E2PROM
XDEC
SDA
SCL
WP
Serial Data/Address
Serial Clock
CONTROL
LOGIC
Write Protect
VCC
VSS
1.7 V to 5.5 V Power Supply
Ground
DATA IN STORAGE
HIGH VOLTAGE/
TIMING CONTROL
SCL
STATE COUNTERS
SLAVE
A
0
ADDRESS
COMPARATORS
A1
A2
24CXX F03
2
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I C Bus Protocol.
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 1003, Rev. O
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