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CAT1021ZD4E-42TE13 参数 Datasheet PDF下载

CAT1021ZD4E-42TE13图片预览
型号: CAT1021ZD4E-42TE13
PDF下载: 下载PDF文件 查看货源
内容描述: 监控电路,带有I2C串行2K位CMOS EEPROM ,手动复位及看门狗定时器 [Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM, Manual Reset and Watchdog Timer]
分类和应用: 电源电路电源管理电路监控可编程只读存储器电动程控只读存储器电可擦编程只读存储器
文件页数/大小: 20 页 / 149 K
品牌: CATALYST [ CATALYST SEMICONDUCTOR ]
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CAT1021, CAT1022, CAT1023  
MR:  
MANUAL RESET INPUT  
PIN DESCRIPTION  
Manual Reset input is a debounced input that can be  
connected to an external source for Manual Reset.  
Pulling the MR input low will generate a Reset condition.  
Reset outputs are active while MR input is low and for  
the reset timeout period after MR returns to high. The  
input has an internal pull up resistor.  
RESET/RESET: RESET OUTPUTS  
(RESET CAT1021/23 Only)  
These are open drain pins and RESET can be used as a  
manual reset trigger input. By forcing a reset condition on  
thepinthedevicewillinitiateandmaintainaresetcondition.  
The RESET pin must be connected through a pull-down  
resistor, and the RESET pin must be connected through a  
pull-up resistor.  
WP (CAT1021 Only): WRITE PROTECT INPUT  
When WP input is tied to VSS or left unconnected write  
operations to the entire array are allowed. When tied to  
VCC, the entire array is protected. This input has an  
internal pull down resistor.  
SDA: SERIAL DATA ADDRESS  
Thebidirectionalserialdata/addresspinisusedtotransfer  
all data into and out of the device. The SDA pin is an open  
drain output and can be wire-ORed with other open drain  
or open collector outputs.  
WDI (CAT1023 Only): WATCHDOG TIMER INTERRUPT  
Watchdog Timer Interrupt Input is used to reset the  
watchdog timer. If a transition from high to low or low to  
high does not occur every 1.6 seconds, the RESET  
outputs will be driven active.  
SCL: SERIAL CLOCK  
Serial clock input.  
OPERATING TEMPERATURE RANGE  
PIN FUNCTIONS  
Industrial  
Extended  
-40˚C to 85˚C  
-40˚C to 125˚C  
Pin Name  
Function  
NC  
RESET  
VSS  
No Connect  
Active Low Reset Input/Output  
Ground  
SDA  
SCL  
Serial Data/Address  
Clock Input  
RESET  
VCC  
Active High Reset Output (CAT1021/23)  
Power Supply  
WP  
Write Protect (CAT1021 only)  
Manual Reset Input  
MR  
WDI  
Watchdog Timer Interrupt (CAT1023)  
CAT102X FAMILY OVERVIEW  
Manual  
Reset  
Input Pin  
Watchdog  
Monitor  
Pin  
Write  
Protection  
Pin  
Independent  
Auxiliary  
Voltage Sense  
RESET: Active  
High and LOW  
Device  
Watchdog  
EEPROM  
CAT1021  
SDA  
2k  
CAT1022  
CAT1023  
CAT1024  
CAT1025  
CAT1026  
CAT1027  
SDA  
WDI  
2k  
2k  
2k  
2k  
2k  
2k  
WDI  
For supervisory circuits with embedded 16k EEPROM, please refer to the CAT1161, CAT1162 and CAT1163  
data sheets.  
Doc No. 3009, Rev. K  
3
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