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CAT24WC256 View Datasheet(PDF) - Catalyst Semiconductor => Onsemi

Part Name
Description
View to exact match
CAT24WC256
Catalyst
Catalyst Semiconductor => Onsemi Catalyst
CAT24WC256 Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
CAT24WC256
256K-Bit I2C Serial CMOS EEPROM
(CAT24WC256 not recommended for new designs. See CAT24FC256 data sheet.)
FEATURES
ALOGEN FR
LEA
D
F
R
E
E
TM
I 1MHz I2C 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
temperature ranges
I Write protect feature
– entire array protected when WP at V
IH
I 100,000 program/erase cycles
I 100 year data retention
I 8-pin DIP or 8-pin SOIC
I "Green" package options available
DESCRIPTION
The CAT24WC256 is a 256K-bit Serial CMOS EEPROM
internally organized as 32,768 words of 8 bits each.
Catalyst’s advanced CMOS technology substantially
reduces device power requirements. The CAT24WC256
features a 64-byte page write buffer. The device oper-
ates 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
NC 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
BLOCK DIAGRAM
EXTERNAL LOAD
VCC
VSS
DOUT
ACK
WORD ADDRESS
BUFFERS
SENSE AMPS
SHIFT REGISTERS
COLUMN
DECODERS
SOIC Package (J, W, K, X)
A0 1
A1 2
NC 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
SDA
WP
START/STOP
LOGIC
CONTROL
LOGIC
XDEC
PIN FUNCTIONS
Pin Name
Function
A0, A1
Address Inputs
SDA
Serial Data/Address
SCL
Serial Clock
WP
Write Protect
SCL
STATE COUNTERS
VCC
+1.8V to +6.0V Power Supply
VSS
Ground
A0
SLAVE
A1
ADDRESS
NC
No Connect
COMPARATORS
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I2C Bus Protocol.
512
EEPROM
512
512X512
DATA IN STORAGE
HIGH VOLTAGE/
TIMING CONTROL
© 2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 1031, Rev. F
 

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