ST’s microprocessor supervisors are more sophisticated devices that can include watchdog and early power-fail warnings (power-fail in/power-fail out (PFI/PFO)), push-button reset functions and battery monitoring.
Microprocessor supervisors with a switchover function preserve SRAM data in the absence of system power by automatically switching to batter backup when power fails. A chip-enable gate automatically write-protects the SRAM when the Vcc begins to fall.
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STM6825
5-pin supervisor with watchdog timer and push-button reset
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STM6824
5-pin supervisor with watchdog timer and push-button reset
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STM6823
5-pin supervisor with watchdog timer and push-button reset
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STM6822
5-pin supervisor with watchdog timer and push-button reset
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STM703
5 V supervisor with battery switchover
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STM704
5 V supervisor with battery switchover
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STM813L
5 V supervisor
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STM706P
3 V Supervisor
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STM705
5V Supervisor
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STM706
5 V Supervisor
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STM690A
5 V supervisor with battery switchover
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STM819L/M
5 V supervisor with battery switchover
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STM818L/M
5 V supervisor with battery switchover
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M40SZ100W
3 V NVRAM supervisor for LPSRAM
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STM692A
5 V supervisor with battery switchover
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STM6821
5-pin supervisor with watchdog timer and push-button reset
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STM6322
5-pin supervisor with watchdog timer and push-button reset
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STM6321
5-pin supervisor with watchdog timer and push-button reset
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STM805T/S/R
3 V supervisor with battery switchover
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STM805L
5 V supervisor with battery switchover
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STM817L/M
5 V supervisor with battery switchover
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STM806T/S/R
3 V supervisor with battery switchover
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STM802L/M
5 V supervisor with battery switchover
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STM795T/S/R
3 V supervisor with battery switchover
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STM804T/S/R
3 V supervisor with battery switchover
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STM802T/S/R
3 V supervisor with battery switchover
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STM708T/S/R
3 V Supervisor
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TSM104W
Quad Operational Amplifier and Voltage Reference
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STM690T/S/R
5 V supervisor with battery switchover
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STM706T/S/R
3 V Supervisor
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TSM102
Dual Op-Amp + Dual Comparator + VRef (Bipolar), Adjustable
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STM704T/S/R
3 V supervisor with battery switchover
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STM707
5V Supervisor
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STM708
5 V Supervisor
