CAT24WC01/02/04/08/16
1K/2K/4K/8K/16K-Bit Serial E2PROM
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 6.0Volt Operation
■ Low Power CMOS Technology
■ 8-pin DIP, 8-pin SOIC or 8 pin TSSOP
■ Write Protect Feature
■ Commercial, Industrial and Automotive
— Entire Array Protected When WP at VIH
Temperature Ranges
■ Page Write Buffer
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, 8-
pin SOIC or 8-pin TSSOP.
The CAT24WC01/02/04/08/16 is a 1K/2K/4K/8K/16K-
bit Serial CMOS E2PROM 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
BLOCK DIAGRAM
SOIC Package (J)
DIP Package (P)
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)
(* Available for 24WC01 and 24WC02 only)
START/STOP
SDA
WP
LOGIC
1
2
3
4
8
7
6
5
A
A
A
0
1
2
V
CC
WP
E2PROM
XDEC
SCL
SDA
V
CONTROL
LOGIC
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 +6.0V Power Supply
Ground
VSS
24WCXX F03
2
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I C Bus Protocol.
© 1999 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 25051-00 3/98
S-1
1