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CAT24C641PA-45TE13 PDF预览

CAT24C641PA-45TE13

更新时间： 2024-11-18 05:08:35
品牌 Logo 应用领域
CATALYST 监控控制器可编程只读存储器
页数 文件大小 规格书
12页 88K
描述
Supervisory Circuits with I2C Serial CMOS E2PROM, Precision Reset Controller and Watchdog Timer

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CAT24C641PA-45TE13 数据手册

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Advanced  
CAT24C321/322(32K), CAT24C641/642(64K)  
2
2
Supervisory Circuits with I C Serial CMOS E PROM, Precision Reset Controller and Watchdog Timer  
FEATURES  
■ Active High or Low Reset Outputs  
— Precision Power Supply Voltage Monitoring  
— 5V, 3.3V and 3V options  
■ Watchdog Timer on SDA for 24C321/641  
■ Programmable Reset Threshold  
2
■ 400 KHz I C Bus Compatible  
■ 1,000,000 Program/Erase Cycles  
■ 100 Year Data Retention  
■ 2.7 to 6 Volt Operation  
■ Low Power CMOS Technology  
■ 32 - Byte Page Write Buffer  
■ Built-in inadvertent write protection  
— VCC Lock Out  
■ 8-Pin DIP or 8-Pin SOIC  
■ Commercial, Industrial and Automotive  
Temperature Ranges  
DESCRIPTION  
The CAT24CXXX is a single chip solution to three  
popular functions of EEPROM memory, precision reset  
controller and watchdog timer. The 24C321/322(32K)  
and 24C641/642(64K) feature a I2C Serial CMOS  
EEPROM. Catalyst's advanced CMOS technology sub-  
stantially reduces device power requirements. The  
24CXXXfeaturesa32-bytepageandisavailablein 8-pin  
DIP or 8-pin SOIC packages.  
The reset function of the 24CXXX protects the system  
duringbrownoutandpowerup/downconditions. During  
system failure the watchdog timer feature protects the  
microcontroller with a reset signal. 24CXXX features  
active low reset on pin 2 and active high reset on pin 7.  
24C321/641 features watchdog timer on the SDA line.  
24C322/642 does not feature the watchdog timer func-  
tion.  
PIN CONFIGURATION  
BLOCK DIAGRAM  
24C321/322*  
24C641/642*  
EXTERNAL LOAD  
SENSE AMPS  
SHIFT REGISTERS  
D
OUT  
ACK  
V
DC  
RESET  
WP  
CC  
V
V
CC  
SS  
RESET  
SCL  
WORD ADDRESS  
BUFFERS  
COLUMN  
DECODERS  
V
SDA  
SS  
START/STOP  
LOGIC  
SDA  
WP  
*All products offered in P and J packages  
PIN FUNCITONS  
E2PROM  
XDEC  
Pin Name  
Function  
CONTROL  
LOGIC  
SDA  
Serial Data/Address  
Reset I/O  
RESET/RESET  
DATA IN STORAGE  
SCL  
Vcc  
DC  
Clock Input  
Power Supply  
Do not Connect  
Ground  
HIGH VOLTAGE/  
TIMING CONTROL  
RESET Controller  
High  
STATE COUNTERS  
VSS  
WP  
SCL  
Precision  
SLAVE  
ADDRESS  
COMPARATORS  
Only for  
24C321/641  
Write Protect  
WATCHDOG  
Vcc Monitor  
24C1601 BLOCK  
RESET/RESET  
© 1998 by Catalyst Semiconductor, Inc.  
Doc. No. 25083-00 12/98  
9-1  
Characteristics subject to change without notice  
1234567...12

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