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CAT24C44VE-TE13 Datasheet

  • CAT24C44VE-TE13

  • 256-Bit Serial Nonvolatile CMOS Static RAM

  • 9頁

  • CATALYST

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CAT24C44
256-Bit Serial Nonvolatile CMOS Static RAM
FEATURES
s
Single 5V Supply
s
Infinite EEPROM to RAM Recall
s
CMOS and TTL Compatible I/O
s
Low CMOS Power Consumption:
s
JEDEC Standard Pinouts:
鈥?-pin DIP
鈥?-pin SOIC
s
100,000 Program/Erase Cycles (EEPROM)
s
Auto Recall on Power-up
s
Commercial, Industrial and Automotive
鈥揂ctive: 3 mA Max.
鈥揝tandby: 30
碌
A Max.
s
Power Up/Down Protection
s
10 Year Data Retention
Temperature Ranges
s
"Green" Package Options Available
DESCRIPTION
The CAT24C44 Serial NVRAM is a 256-bit nonvolatile
memory organized as 16 words x 16 bits. The high
speed Static RAM array is bit for bit backed up by a
nonvolatile EEPROM array which allows for easy trans-
fer of data from RAM array to EEPROM (STORE) and
from EEPROM to RAM (RECALL). STORE operations
are completed in 10ms max. and RECALL operations
typically within 1.5碌s. The CAT24C44 features unlim-
ited RAM write operations either through external RAM
writes or internal recalls from EEPROM. Internal false
store protection circuitry prohibits STORE operations
when V
CC
is less than 3.5V (typical) ensuring EEPROM
data integrity.
The CAT24C44 is manufactured using Catalyst鈥檚 ad-
vanced CMOS floating gate technology. It is designed to
endure 100,000 program/erase cycles (EEPROM) and
has a data retention of 10 years. The device is available
in JEDEC approved 8-pin plastic DIP and SOIC pack-
ages.
PIN CONFIGURATION
DIP Package (P, L, GL)
CE
SK
DI
DO
1
2
3
4
8
7
6
5
PIN FUNCTIONS
Pin Name
Function
Serial Clock
Serial Input
Serial Data Output
Chip Enable
Recall
Store
+5V
Ground
SK
DI
DO
CE
RECALL
STORE
V
CC
V
SS
SOIC Package (S, V, GV)
1
2
3
4
8
7
6
5
VCC
STORE
RECALL
VSS
VCC
CE
STORE SK
RECALL DI
VSS
DO
漏 2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 1083, Rev. R

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