CAT24WC129
128K-Bit I
2
C Serial CMOS EEPROM
FEATURES
I
1MHz I
2
C Bus Compatible*
I
1.8 to 6 Volt Operation
I
Low Power CMOS Technology
I
64-Byte Page Write Buffer
I
Self-Timed Write Cycle with Auto-Clear
I
Commercial, Industrial and Automotive
I
Write Protect Feature
I
100,000 Program/Erase Cycles
I
100 Year Data Retention
I
8-Pin DIP or 8-Pin SOIC
H
GEN
FR
ALO
EE
LE
A
D
F
R
E
E
TM
鈥?Top 1/4 Array Protected When WP at V
IH
I
"Green" Package Options Available
Temperature Ranges
DESCRIPTION
The CAT24WC129 is a 128K-bit Serial CMOS E
2
PROM
internally organized as 16384 words of 8 bits each.
Catalyst鈥檚 advanced CMOS technology substantially
PIN CONFIGURATION
DIP Package (P, L)
NC
NC
NC
VSS
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
SOIC Package (J, W, K, X)
PIN FUNCTIONS
Pin Name
SDA
SCL
WP
V
CC
V
SS
i
D
NC
NC
VSS
NC
1
2
3
4
c
s
8
7
6
5
VCC
WP
SCL
SDA
i
t
n
o
u
n
VCC
VSS
SDA
WP
reduces device power requirements. The
CAT24WC129 features a 64-byte page write buffer.
The device operates via the I
2
C bus serial interface and
is available in 8-pin DIP or 8-pin SOIC packages.
BLOCK DIAGRAM
EXTERNAL LOAD
d
e
DOUT
ACK
CONTROL
LOGIC
a
P
t
r
SENSE AMPS
SHIFT REGISTERS
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
512
START/STOP
LOGIC
XDEC
256
EEPROM
256X512
Function
DATA IN STORAGE
Serial Data/Address
Serial Clock
Write Protect
+1.8V to +6V Power Supply
Ground
SCL
STATE COUNTERS
HIGH VOLTAGE/
TIMING CONTROL
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I
2
C Bus Protocol.
漏 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 1079, Rev. V