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STM690A

5V Supervisor with Battery Switchover

Description TheSTM690A/692A/703/704/802/805/817/818/819supervisorsareself-containeddeviceswhichprovidemicroprocessorsupervisoryfunctionswiththeabilitytonon-volatizeandwrite-protectexternalLPSRAM.AprecisionvoltagereferenceandcomparatormonitorstheVCCinputforanout-of-

STM690A

5V監(jiān)控器; ? 5 V operating voltage \n? NVRAM supervisor for external LPSRAM \n? Chip-enable gating (STM818 only) for external LPSRAM (7 ns max prop delay) \n? RST andRSToutputs \n? 200 ms (typ) trec \n? Watchdog timer - 1.6 sec (typ) \n? Automatic battery switchover? Low battery supply current - 0.4 μA (typ) \n? Power-fail comparator (PFI/PFO) \n? Low supply current - 40 μA (typ) \n? GuaranteedRST(RST) assertion down to VCC = 1.0 V \n? Operating temperature: –40 °C to +85 °C (industrial grade) \n? RoHS compliance \n ?Lead-free components are compliant with the RoHS directive;

The STM690A/692A/703/704/802/805/817/818/819 supervisors are self-contained devices which provide microprocessor supervisory functions with the ability to non-volatize and write-protect external LPSRAM. 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 STM703/704/819) as well as a power-fail comparator (except for STM818) to provide the system with an early warning of impending power failure.\n\n These devices are available in a standard 8-pin SOIC package or a space-saving 8-pin TSSOP package.\n\n

STM690A

5 V supervisor with battery switchover

STM690ADS6E

5V Supervisor with Battery Switchover

Description TheSTM690A/692A/703/704/802/805/817/818/819supervisorsareself-containeddeviceswhichprovidemicroprocessorsupervisoryfunctionswiththeabilitytonon-volatizeandwrite-protectexternalLPSRAM.AprecisionvoltagereferenceandcomparatormonitorstheVCCinputforanout-of-

STM690ADS6F

5V Supervisor with Battery Switchover

Description TheSTM690A/692A/703/704/802/805/817/818/819supervisorsareself-containeddeviceswhichprovidemicroprocessorsupervisoryfunctionswiththeabilitytonon-volatizeandwrite-protectexternalLPSRAM.AprecisionvoltagereferenceandcomparatormonitorstheVCCinputforanout-of-

STM690AM6E

5V Supervisor with Battery Switchover

Description TheSTM690A/692A/703/704/802/805/817/818/819supervisorsareself-containeddeviceswhichprovidemicroprocessorsupervisoryfunctionswiththeabilitytonon-volatizeandwrite-protectexternalLPSRAM.AprecisionvoltagereferenceandcomparatormonitorstheVCCinputforanout-of-

STM690AM6F

5V Supervisor with Battery Switchover

Description TheSTM690A/692A/703/704/802/805/817/818/819supervisorsareself-containeddeviceswhichprovidemicroprocessorsupervisoryfunctionswiththeabilitytonon-volatizeandwrite-protectexternalLPSRAM.AprecisionvoltagereferenceandcomparatormonitorstheVCCinputforanout-of-

STM690A_10

5 V supervisor with battery switchover

STM690ADS6E

5 V supervisor with battery switchover

STM690ADS6F

5 V supervisor with battery switchover