CAT24WC32 Datasheet, PDF (1/10 Pages) Catalyst Semiconductor – 32K/64K-Bit I2C Serial CMOS E2PROM

CAT24WC32/64
32K/64K-Bit I²C Serial CMOS EEPROM
FEATURES
I 400 KHz I²C bus compatible*
I 1.8 to 6 volt read and write operation
I Cascadable for up to eight devices
I 32-Byte page write buffer
I Self-timed write cycle with auto-clear
I 8-pin DIP or 8-pin SOIC
I Schmitt trigger inputs for noise protection
DESCRIPTION
The CAT24WC32/64 is a 32K/64K-bit Serial CMOS
E²PROM internally organized as 4096/8192 words of 8
bits each. Catalyst’s advanced CMOS technology sub-
stantially reduces device power requirements. The
ALOGEN ^FR
LEA _{D F REETM}
I Commercial, industrial, automotive and
extended automotive temperature ranges
I Write protection
– Entire array protected when WP at V_IH
I 1,000,000 Program/erase cycles
I 100 year data retention
CAT24WC32/64 features a 32-byte page write buffer.
The device operates via the I²C bus serial interface and
is available in 8-pin DIP or 8-pin SOIC packages.
PIN CONFIGURATION
DIP Package (P, L)
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
SOIC Package (J, W, K, X)
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
BLOCK DIAGRAM
EXTERNAL LOAD
VCC
VSS
DOUT
ACK
WORD ADDRESS
BUFFERS
SDA
START/STOP
LOGIC
SENSE AMPS
SHIFT REGISTERS
COLUMN
DECODERS
256
E²PROM
XDEC 128/256 _{128/256 X 256}
CONTROL
WP
LOGIC
PIN FUNCTIONS
Pin Name
Function
A0, A1, A2 Device Address Inputs
SDA
Serial Data/Address
SCL
Serial Clock
WP
Write Protect
VCC
+1.8V to +6V Power Supply
VSS
Ground
SCL
A0
A1
A2
STATE COUNTERS
SLAVE
ADDRESS
COMPARATORS
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I²C Bus Protocol.
DATA IN STORAGE
HIGH VOLTAGE/
TIMING CONTROL
24WC32/64 F02
© 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 1039, Rev. F