STC82x
Overview
The STCxxx family microprocessor (µP) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in µP systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions.
- Precision supply-voltage monitor - 4.63V (STC8xxL, STC634xL) - 4.38V (STC8xxM, STC634xM) - 3.08V (STC8xxT, STC634xT) - 2.93V (STC8xxS, STC634xS) - 2.63V (STC8xxR, STC634xR) - 2.32V (STC8xxZ, STC634xZ) - 2.20V (STC8xxY, STC634xY)
- 200ms reset pulse width
- Debounced CMOS-compatible manual-reset input (811, 812, 823, 825, 6342-6344)
- Reset Output Signal for Watchdog and Power Abnormal, Manual Reset
- Reset Push-Pull output (STC809,811,823, 824,825,6342,6345)
- Reset Open-Drain output (STC803/6343)
- Voltage monitor for power-fail or low battery warning
- Guaranteed RESET/RESET valid at VCC = 1.0V Introduction The STCxxx family microprocessor (µP) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in µP systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions. The main functions are:
- Asserting reset output during power-up, powerdown and brownout conditions for µP system;
- Detecting power failure or low-battery conditions with a 1.25V threshold detector;
