STC705-706 ETC-unknow, STC705-706 Datasheet

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... Active-high only (STC813L/M/T/S/R/706P) - Active-high and active-low (707/708/708T/S/R) • Voltage monitor for power-fail or low battery warning • Guaranteed RESET/RESET valid at V STC STC705-706/706P-707-708-708T/S/R-813L Introduction The STC706X/813X/708X 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 ...

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... Functional Description ................................................................................................................................ 5 Reset Output ...................................................................................................................................... 5 Watchdog Timer ................................................................................................................................ 5 Manual Reset ..................................................................................................................................... 5 Power-Fail Comparator ..................................................................................................................... 5 Function Reference Table .................................................................................................................. 6 Detailed Specifications ................................................................................................................................ 7 Absolute Maximum Ratings .............................................................................................................. 7 Recommended Operation Condition ................................................................................................. 7 DC Electrical Characteristics ............................................................................................................. 8 AC Electrical Characteristics ............................................................................................................. 9 Ordering Information ................................................................................................................................ 10 Mechanical Information ............................................................................................................................ 11 Notes ......................................................................................................................................................... 12 STC STC705-706/706P-707-708-708T/S/R-813L P Supervisor Circuits Contents 2 Data Sheet Ver1.0 ...

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... Figure 1. Block Diagram of STC706X/707, STC813X/706P Watchdog WDI Transition Detector MR Vcc PFI Figure 2. Block Diagram of STC708X / 707 Vcc MR Vcc V RST PFI STC STC705-706/706P-707-708-708T/S/R-813L Watchdog Timer V cc Timebase for Reset 250uA & Watchdog Reset Generator V RST 1.25V 250uA Reset Generator 1.25V 3 Data Sheet ...

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... STC STC705-706/706P-707-708-708T/S/R-813L STC813L/M/T/S/R/706PESA STC813L/M/T/S/R/706PEPA 8-Pin SOIC/8-Pin PDIP 1 8 WDO RESET WDI GND 4 PFI 5 PFO Top View ...

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... Figure 4. Typical Application Circuit IN DC Linear Regulator STC STC705-706/706P-707-708-708T/S/R-813L Watchdog Timer The watchdog circuit monitors the µP’s activity. If the µP does not toggle the watchdog input (WDI) within 1.6sec and WDI is not in high impedance, WDO goes low. As long as RESET is asserted or the WDI input is in high impedance, the watchdog timer will stay cleared and will not count ...

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... STC813R/706P 2.63V STC708R 2.63V STC706Z 2.32V STC813Z 2.32V STC708Z 2.32V STC706Y 2.20V STC813Y 2.20V STC708Y 2.20V STC STC705-706/706P-707-708-708T/S/R-813L Nom. Reset Time Nom. Watch dog or High (ms), t Time (sec LOW 200 HIGH 200 LOW, HIGH 200 unavailable LOW 200 HIGH ...

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... Mechanical Information Figure 7. 8-Pin SOIC STC STC705-706/706P-707-708-708T/S/R-813L P Supervisor Circuits 8 Data Sheet Ver1.0 ...