onsemi Supervisors CAT1640WI-30-GT3

The CAT1640WI-30-GT3 is a supervisory circuit that integrates a 64 kbit serial EEPROM memory with a power supply supervisor, designed for microcontroller-based systems. It operates within a voltage range of 3.0 V to 5.5 V and features a 400 kHz I2C bus interface for memory access. The device includes a precision VCC sense circuit that activates an open drain output, generating a RESET signal when the supply voltage falls below a specified threshold. This ensures protection against power-up/down issues and brownout conditions. The CAT1640 offers five reset threshold options suitable for 5 V, 3.3 V, and 3 V systems, with valid reset guaranteed at VCC levels as low as 1 V. The reset signal typically deactivates 200 ms after the supply voltage exceeds the reset threshold. Additionally, the device supports both active low (CAT1640) and active high (CAT1641) reset configurations, facilitating easy integration with various microcontrollers and ICs. The memory features a 64-byte page write buffer and is designed for low power consumption, with a lifespan of 1,000,000 program/erase cycles and 100 years of data retention. The CAT1640WI-30-GT3 is available in multiple package types, including 8-pin DIP, SOIC, TSSOP, and TDFN, and operates within an industrial temperature range of -40¬8C to 85¬8C.