3 V supervisor with battery switchover
DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Figure 2.Logic Diagram (STM690/802/804/805) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Figure 3.Logic Diagram (STM704/806) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Figure 4.Logic Diagram (STM795). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Table 2.Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4Figure 5.STM690/802/804/805 Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Figure 6.STM704/806 Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Figure 7.STM795 Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FEATURES SUMMARYRST OR RST OUTPUTSNVRAM SUPERVISOR FOR EXTERNAL LPSRAM CHIP-ENABLE GATING (STM795 only) FOR EXTERNAL LPSRAM (7ns max PROP DELAY) MANUAL (PUSH-BUTTON) RESET INPUT200ms (TYP) trec WATCHDOG TIMER - 1.6sec (TYP)LOW BATTERY SUPPLY CURRENT - 0.4A (TYP) POWER-FAIL COMPARATOR (PFI/PFO)LOW SUPPLY CURRENT - 40A (TYP)GUARANTEED RST (RST) ASSERTION DOWN TO VCC = 1.0VOPERATING TEMPERATURE:40C to 85C (Industrial Grade)Figure 1. PackagesTable 1. Device OptionsNote:1.All RST outputs push-pull (unless otherwise noted)2.Open drain output.81SO8 (M)TSSOP8 3x3 (DS)*Watchdog InputActive- Low RSTActive- HighRSTManual Reset InputBattery Switch-overPower-fail Compar- atorChip-Enable GatingSTM690T/S/RSTM704T/S/RSTM795T/S/R (2) STM802T/S/RSTM804T/S/R (2) STM805T/S/R (2) STM806T/S/RSTM690/704/ 795/802/804/805/806 2/32TABLE OF CONTENTSFEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Figure 1.Packages. . . . . 1/32April 2006STM690, STM704, STM795STM802, ST
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AI07898, INPUT200ms, STM704STM806, STM806T/S/RSTM690/704, AI08850, STM690/704/795/802/804/805/806, STM804, 3x3mm, CHIP-ENABLE, STM704/806.AI08852, STM8063V, AI08849, SO8/TSSOP8, STM802T/S/RSTM804T/S/R, 31STM690/704, CCSW(2), STM704/806, STM805T/S/R, AI08847, POWER-FAIL, STM795STM802, 2348765ESTM690/704, AI08853, STM704, STM805, AI08846, PFIMRPFOSTM690/704, STM795, 2006STM690, TEMPERATURE40C, AI08851, STM690/802/804/805, STM804/805
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