Datasheet Details
| Part number | FM1233A |
|---|---|
| Manufacturer | Fairchild (now onsemi) |
| File Size | 66.71 KB |
| Description | 3-Pin C Supervisor Circuit |
| Datasheet |
 FM1233A Datasheet
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General Description
The FM1233A is a supervisor circuit that monitors a microprocessor power supply or other system voltage and issues a reset pulse when a fault condition exists.
Several different threshold voltages are offered to accommodate 3.3V and 3.0V systems with different tolerances.
Key Features
- a precision temperature-compensated voltage reference and comparator. When VCC falls to the threshold voltage, a RESET pulse is issued, holding the output in the active state. When power rises above VTH, the reset remains asserted for a minimum period (tRST) to allow the system clock and other circuits to stabilize. The reset output of FM1233A is of open-drain active low type. The FM1233A also can monitor a switch closure on its output, enabling it to recognize an external reset from a pushbutto.