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STM705 データシート

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STM705
ST-Microelectronics
STMicroelectronics ST-Microelectronics
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Description
The STM705/706/707/708/813L supervisors are self-contained devices which provide microprocessor supervisory functions. 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 STM707/708) as well as a power-fail comparator 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.

Features
■ 5 V operating voltage
■ Precision VCC monitor
   – STM705/707/813L
   – 4.50 V ≤ VRST ≤ 4.75 V
   – STM706/708
   – 4.25 ≤ VRST ≤ 4.50 V
■ RST and RST outputs
■ 200 ms (typ) trec
■ Watchdog timer - 1.6 s (typ)
■ Manual reset input (MR)
■ Power-fail comparator (PFI/PFO)
■ Low supply current - 40 µA (typ)
■ Guaranteed RST (RST) assertion down to VCC = 1.0 V
■ Operating temperature: –40 °C to 85 °C (industrial grade)
■ RoHS compliance
   – Lead-free components are compliant with the RoHS directive

 

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