CAT24WC01/02/04/08/16
1K/2K/4K/8K/16K-Bit Serial EEPROM
FEATURES
■ Self-Timed Write Cycle with Auto-Clear
■ 1,000,000 Program/Erase Cycles
■ 100 Year Data Retention
■ 400 kHz I2C Bus Compatible*
■ 1.8 to 5.5Volt Operation
■ Low Power CMOS Technology
■ 8-pin DIP, SOIC, TSSOP and MSOP packages
- "Green" package option available
■ Write Protect Feature
— Entire Array Protected When WP at VIH
■ Commercial, Industrial, Automotive and
■ Page Write Buffer
Extended Temperature Ranges
DESCRIPTION
08/16 feature a 16-byte page write buffer. The device
operates via the I2C bus serial interface, has a special
write protection feature, and is available in 8-pin DIP,
SOIC, TSSOP and MSOP packages.
The CAT24WC01/02/04/08/16 is a 1K/2K/4K/8K/16K-
bit Serial CMOS EEPROM internally organized as 128/
256/512/1024/2048 words of 8 bits each. Catalyst’s
advanced CMOS technology substantially reduces de-
vice power requirements. The the CAT24WC01/02/04/
PIN CONFIGURATION
DIP Package (P, L, GL)
BLOCK DIAGRAM
SOIC Package (J, W, GW)
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
0
1
2
CC
0
1
2
V
CC
WP
SENSE AMPS
SHIFT REGISTERS
D
OUT
WP
ACK
SCL
SDA
SCL
SDA
V
V
V
SS
CC
SS
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
V
SS
5020 FHD F01
TSSOP Package (U, Y, GY)
START/STOP
(MSOP and TSSOP available for CAT24WC01,
CAT24WC02 and CAT24WC04 only)
MSOP Package (R, Z, GZ)
SDA
WP
LOGIC
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
V
A0
A1
A2
A
A
A
CC
0
1
2
V
CC
WP
WP
E2PROM
XDEC
SCL
SDA
SCL
SDA
CONTROL
LOGIC
V
V
SS
SS
PIN FUNCTIONS
DATA IN STORAGE
Pin Name
Function
A0, A1, A2
SDA
Device Address Inputs
Serial Data/Address
Serial Clock
HIGH VOLTAGE/
TIMING CONTROL
SCL
SCL
STATE COUNTERS
WP
Write Protect
SLAVE
ADDRESS
COMPARATORS
A
0
A1
A2
VCC
+1.8V to +5.5V Power Supply
Ground
VSS
2
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I C Bus Protocol.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 1022, Rev. O
1