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CAT24C44STE13 PDF预览

CAT24C44STE13

更新时间: 2024-10-28 09:13:19
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CATALYST /
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8页 48K
描述
256-Bit Serial Nonvolatile CMOS Static RAM

CAT24C44STE13 数据手册

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CAT24C44  
256-Bit Serial Nonvolatile CMOS Static RAM  
FEATURES  
Single 5V Supply  
Infinite E2PROM to RAM Recall  
JEDEC Standard Pinouts:  
–8-pin DIP  
–8-pin SOIC  
100,000 Program/Erase Cycles (E2PROM)  
CMOS and TTL Compatible I/O  
Low CMOS Power Consumption:  
–Active: 3 mA Max.  
Auto Recall on Power-up  
–Standby: 30 µA Max.  
Commercial, Industrial and Automotive  
Temperature Ranges  
Power Up/Down Protection  
10 Year Data Retention  
DESCRIPTION  
store protection circuitry prohibits STORE operations  
when VCC is less than 3.5V (typical) ensuring E2PROM  
data integrity.  
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 E2PROM array which allows for easy trans-  
fer of data from RAM array to E2PROM (STORE) and  
from E2PROM to RAM (RECALL). STORE operations  
are completed in 10ms max. and RECALL operations  
typicallywithin1.5µs.TheCAT24C44featuresunlimited  
RAM write operations either through external RAM  
writes or internal recalls from E2PROM. Internal false  
The CAT24C44 is manufactured using Catalyst’s ad-  
vancedCMOSfloatinggatetechnology. Itisdesignedto  
endure 100,000 program/erase cycles (E2PROM) 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  
PIN FUNCTIONS  
Pin Name  
SK  
Function  
Serial Clock  
Serial Input  
Serial Data Output  
Chip Enable  
Recall  
DIP Package (P)  
SOIC Package (S)  
DI  
1
2
3
4
8
7
6
5
CE  
SK  
DI  
1
2
3
4
8
7
6
5
V
CE  
SK  
DI  
V
CC  
STORE  
CC  
STORE  
DO  
RECALL  
RECALL  
CE  
DO  
V
DO  
V
SS  
SS  
RECALL  
STORE  
VCC  
5157 FHD F01  
Store  
+5V  
VSS  
Ground  
© 1998 by Catalyst Semiconductor, Inc.  
Doc. No. 25019-0A 2/98 N-1  
Characteristics subject to change without notice  
1

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