The STM6xxx supervisors are self-contained devices which provide microprocessor supervisory functions. A precision voltage reference and comparator monitors the VCCinput for an out-of-tolerance condition. When an invalid VCCcondition occurs, the reset output (RST) is forced low (or high in the case of RST). These devices also offer a watchdog timer (except for STM6322/6825) and/or a push-button (MR) reset input.These devices are available in a standard 5-pin SOT23 package.Precision VCCmonitoring of 5, 3.3, 3, or 2.5 V power suppliesRSToutputs (active low, push-pull or open drain)RST outputs (active high, push-pull)Reset pulse width of 1.4 ms, 200 ms and 240 ms (typ.)Watchdog timeout period of 1.6 s (typ.)Manual reset input (MR)Low supply current - 3 µA (typ.)GuaranteedRST(RST) assertion down to VCC= 1.0 VOperating temperature: –40 to +85C (industrial grade)RoHS compliance Lead-free components are compliant with the RoHS directive