onsemi Supervisors CAT1161LI-42-G

The CAT1161LI-42-G is a supervisory circuit designed for microcontroller-based systems, integrating a 16K serial EEPROM, a precision reset controller, and a watchdog timer. It operates within a voltage range of 2.7 V to 6 V and is compatible with a 400 kHz I2C bus. The watchdog timer monitors the SDA line, ensuring the system can recover from software or hardware glitches. The device features five reset threshold options suitable for 5 V, 3.3 V, and 3 V systems, providing active high and low reset signals to facilitate easy interfacing with microcontrollers and other ICs. The memory includes a 16-byte page write buffer and incorporates hardware write protection through a write protect pin and a VCC sense circuit, which prevents writes during power fluctuations. The CAT1161LI-42-G is available in both 8-pin DIP and surface mount SOIC packages, making it versatile for various applications. It is rated for 1,000,000 program/erase cycles and offers a data retention period of up to 100 years. The device is compliant with RoHS standards and is available for commercial and industrial temperature ranges.