The ASM1232LP/LPS is a fully integrated microprocessor supervisor that can restart a microprocessor after a power failure and has a watchdog timer and external reset override. It has a precision temperature-compensated reference and comparator circuits to monitor the 5V, VCC input voltage status.
The ASM1232LP/LPS is a fully integrated microprocessor supervisor designed to halt and restart hung-up microprocessors or restart them after a power failure. It monitors the 5V input voltage status using precision temperature-compensated reference and comparator circuits. When the power supply falls outside selectable tolerance limits, both RESET and RESET outputs become active.
| Operating Temperature Range | -40°C to +85°C |
|---|---|
| Watchdog Timeout Period (TD=GND) | 150ms |
| Watchdog Timeout Period (TD=VCC) | 1200ms |
| Reset Active Time | 250ms minimum |
The selectable watchdog timeout periods are 150ms, 610ms, and 1200ms.
The TOL input selects the tolerance: connect to Vcc for 10% or to GND for 5%.
The device is available in 8-pin DIP, 16-pin SO, and 8-pin MicroSO packages.