CAT24C44S Catalyst Semiconductor, CAT24C44S Datasheet

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CAT24C44S

Manufacturer Part Number
CAT24C44S
Description
SOP-8
Manufacturer
Catalyst Semiconductor
Datasheet

Specifications of CAT24C44S

Date_code
05+
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT24C44
256-Bit Serial Nonvolatile CMOS Static RAM
DIP Package (P, L, GL)
DO
FEATURES
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 s. The CAT24C44 features unlim-
ited RAM write operations either through external RAM
writes or internal recalls from EEPROM. Internal false
PIN CONFIGURATION
CE
SK
DI
Single 5V Supply
Infinite EEPROM to RAM Recall
CMOS and TTL Compatible I/O
Low CMOS Power Consumption:
–Active: 3 mA Max.
–Standby: 30 A Max.
Power Up/Down Protection
10 Year Data Retention
1
2
3
4
8
7
6
5
V CC
STORE
RECALL
V SS
SOIC Package (S, V, GV)
DO
CE
SK
DI
1
2
3
4
8
7
6
5
V CC
RECALL
V SS
STORE
1
store protection circuitry prohibits STORE operations
when V
data integrity.
The CAT24C44 is manufactured using Catalyst’s 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 FUNCTIONS
JEDEC Standard Pinouts:
–8-pin DIP
–8-pin SOIC
100,000 Program/Erase Cycles (EEPROM)
Auto Recall on Power-up
Commercial, Industrial and Automotive
Temperature Ranges
"Green" Package Options Available
Pin Name
SK
DI
DO
CE
RECALL
STORE
V
V
CC
CC
SS
is less than 3.5V (typical) ensuring EEPROM
Serial Clock
Serial Input
Serial Data Output
Chip Enable
Recall
Store
+5V
Ground
Function
Doc. No. 1083, Rev. R

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