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STM818DS6F Datasheet(PDF) 4 Page - STMicroelectronics |
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STM818DS6F Datasheet(HTML) 4 Page - STMicroelectronics |
4 / 37 page STM690A/692A/703/704/802/805/817/818/819 4/37 SUMMARY DESCRIPTION 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 exter- nal LPSRAM. A precision voltage reference and comparator monitors the VCC input for an out-of- tolerance condition. When an invalid VCC condi- tion 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. These devices are available in a standard 8-pin SOIC package or a space-saving 8-pin TSSOP package. Figure 2. Logic Diagram (STM690A/692A/802/ 805/817) Note: 1. For STM805, reset output is active-high. Figure 3. Logic Diagram (STM703/704/819) Figure 4. Logic Diagram (STM818) Table 2. Signal Names Note: 1. STM818 AI07894 VCC VBAT STM690A/ 692A/802/ 805/817 VSS VOUT RST(RST)(1) WDI PFI PFO AI07895 VCC VBAT STM703/ 704/819 VSS VOUT RST MR PFI PFO MR Push-button Reset Input WDI Watchdog Input RST Active-Low Reset Output RST Active-High Reset Output E(1) Chip Enable Input ECON (1) Conditioned Chip Enable Output VOUT Supply Voltage Output VCC Supply Voltage VBAT Back-up Supply Voltage PFI Power-fail Input PFO Power-fail Output VSS Ground AI07896 VCC VBAT STM818 VSS VOUT RST WDI E ECON |
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Similar Description - STM818DS6F |
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