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CAT24WC257KA3TE13 Datasheet

  • CAT24WC257KA3TE13

  • 256K-Bit I2C Serial CMOS EEPROM

  • 10頁

  • CATALYST

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CAT24WC257
256K-Bit I
2
C Serial CMOS EEPROM
(CAT24WC257 not recommended for new designs. See CAT24FC257 data sheet.)
H
GEN
FR
ALO
EE
LE
A
D
F
R
E
E
TM
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
鈥?Top 1/4 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
temperature ranges
DESCRIPTION
The CAT24WC257 is a 256K-bit Serial CMOS EEPROM
internally organized as 32,768 words of 8 bits each.
Catalyst鈥檚 advanced CMOS technology substantially
reduces device power requirements. The CAT24WC257
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.
PIN CONFIGURATION
DIP Package (P, L)
A0
A1
NC
VSS
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
BLOCK DIAGRAM
EXTERNAL LOAD
DOUT
ACK
VCC
VSS
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
512
SENSE AMPS
SHIFT REGISTERS
SOIC Package (J, W, K, X)
A0
A1
NC
VSS
1
2
3
4
8
7
6
5
VCC
WP
SCL
SDA
SDA
START/STOP
LOGIC
XDEC
WP
CONTROL
LOGIC
512
EEPROM
512X512
PIN FUNCTIONS
Pin Name
A0, A1
SDA
SCL
WP
V
CC
V
SS
NC
Function
Address Inputs
Serial Data/Address
Serial Clock
Write Protect
+1.8V to +6.0V Power Supply
Ground
No Connect
A0
A1
SLAVE
ADDRESS
COMPARATORS
SCL
STATE COUNTERS
DATA IN STORAGE
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. 1030, Rev. E

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