OVERVIEW

The SMS29xx is a power supervisory circuit that monitors VCC and will generate complementary reset outputs. The reset pins also act as I/Os and may be used for signal conditioning. The SMS29xx also has an on-board watchdog timer.

The SMS29xx integrates a nonvolatile serial memory. It features the industry standard I2C serial interface allowing quick implementation in an end-users’ system.

FEATURES

• Precision Voltage Monitor

– VCC Supply Monitor

- Complementary reset outputs for complex microcontroller systems

- Integrated memory write lockout function

- No external components required

• Watchdog Timer

– 1600 ms, internal

• Two Wire Serial Interface (I2C™)

• Extended Programmable Functions available on SMS24

• High Reliability

– Endurance: 100,000 erase/write cycles

– Data retention: 100 years

• 8-Pin PDIP or SOIC Packages