ON Semiconductor CAT1161LI-25-G

Power Supply Management Circuit, Fixed, 1 Channel, 2.625V, CMOS, PDIP8
CPU Supervisor with 16 k EEPROM Memory
Processor Supervisor 3V/3.3V/5V 8-Pin PDIP Tube
IC SUPERVSR CPU 16K EEPROM 8DIP
Lead Free Active High/Active Low Obsolete DUAL Simple Reset/Power-On Reset Supervisor -40C~85C TA 3mA 1W 130ms Minimum
The CAT1161 is a complete memory and supervisory solution for microcontroller-based systems. A serial EEPROM memory (16K) with hardware memory write protection a system power supervisor with brown out protection and a watchdog timer are integrated together in low power CMOS technology. Memory interface is via an IC bus. The 1.6-second watchdog circuit returns a system to a known good state if a software or hardware glitch halts or hangs the system. The CAT1161 watchdog monitors the SDA line making an additional PC board trace unnecessary. The power supply monitor and reset circuit protects memory and system controllers during power up/down and against brownout conditions. Five reset threshold voltages support 5.0 V 3.3 V and 3.0 V systems. If power supply voltages are out of tolerance reset signals become active preventing the system microcontroller ASIC or peripherals from operating. Reset signals become inactive typically 200 ms after the supply voltage exceeds the reset threshold level. With both active high and low reset signals interface to microcontrollers and other ICs is simple. In addition a reset pin can be used as a debounced input for push-button manual reset capability. The CAT1161 memory