STC823

www.DataSheet4U.com Data Sheet STC803/809/810-811/812/-823/824/825-6342/6343/6344/6345 µP Supervisor Circuits -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Features 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: 1. Asserting reset output during power-up, powerdown and brownout conditions for µP system; 2. Detecting power failure or low-battery conditions with a 1.25V threshold detector; 3. Watchdog functions; 4. Manual reset. Applications Power-supply circuitry in µP systems Ordering Information Part...