CAT24WC66 Datasheet, PDF (1/10 Pages) Catalyst Semiconductor – 64K-Bit I2C Serial CMOS EEPROM

CAT24WC66
64K-Bit I²C Serial CMOS EEPROM
FEATURES
s 400 kHz I²C bus compatible*
s 1.8 to 6 volt read and write operation
s Cascadable for up to eight devices
s 32-byte page write buffer
s Self-timed write cycle with auto-clear
s Schmitt trigger inputs for noise protection
ALOGEN ^FR
LEA _{D F REETM}
s Commercial, industrial and automotive
temperature ranges
s Write protection
–Top 1/4 array protected when WP at V_IH
s 1,000,000 program/erase cycles
s 100 year data retention
s 8-pin DIP or 8-pin SOIC packages
DESCRIPTION
The CAT24WC66 is a 64K-bit Serial CMOS EEPROM
internally organized as 8192 words of 8 bits each.
Catalyst’s advanced CMOS technology substantially
reduces device power requirements. The
CAT24WC66 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, K, W, 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
XDEC 256
EEPROM
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
DATA IN STORAGE
HIGH VOLTAGE/
TIMING CONTROL
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I²C Bus Protocol.
© 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 1037, Rev. H