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STM704DS6F Datasheet(PDF) 6 Page - STMicroelectronics |
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STM704DS6F Datasheet(HTML) 6 Page - STMicroelectronics |
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6 / 43 page  Description STM690A/692A/703/704/802/805/817/818/819 6/43 Doc ID 10522 Rev 10 1 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 external LPSRAM. A precision voltage reference and comparator monitors the VCC input for an out-of-tolerance condition. When an invalid VCC condition 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 1. Logic diagram (STM690A/692/802/805/817) 1. For STM805, reset output is active-high. Figure 2. Logic diagram (STM703/704/819) 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 |
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