Alliance Semiconductor ASM1232LP
The ASM1232LP/LPS is a fully integrated microprocessor supervisor. It can halt and restart a “hung-up” microprocessor, restart a microprocessor after a power failure. It has a watchdog timer and external reset override.| Part No. | ASM1232LP |
|---|---|
| Datasheet | ASM1232LP Download |
| Manufacturer |  Alliance Semiconductor |
| Description | 5V uP Power Supply Monitor and Reset Circuit |
| Buy | Stock & Price |
GENERAL DESCRIPTION
A precision temperature-compensated reference andAPPLICATIONS
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● Microprocessor Systems Computers Controllers Portable Equipment Intelligent Instuments Automotive Systems comparator circuits monitor the 5V, VCC input voltage status. During power-up or when the VCC power supply falls outside selectable tolerance limits, both RESET and RESET become active. When VCC rises above the threshold voltage, the reset signals remain active for an additional 250ms minimum, allowing the power supply and system microprocessor to stabilize. The trip point tolerance signal, TOL, selects the trip level tolerance to be either 5% or 10%. Each device has both a push-pull, active HIGH reset output and an open drain active LOW reset output. A debounced manual reset input, PBRST, activates the reset outputs for a minimum period of 250ms. There is a watchdog timer to stop and restart a microprocessor that is “hung-up”. The watchdog timeouts periods are selectable: 150ms, 610ms and 1200ms.
