STM817集成電路（IC）的監(jiān)控器規(guī)格書PDF中文資料

STM817屬于集成電路（IC）的監(jiān)控器。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的STM817監(jiān)控器PMIC 監(jiān)控器用于監(jiān)視和/或控制電路中的電壓軌，能夠連接微控制器以維持一定的功率限值。監(jiān)控器類型包括電池備用電路、監(jiān)控器、多電壓監(jiān)控器、電源監(jiān)控器、穩(wěn)壓器/監(jiān)控器、復(fù)位計(jì)時(shí)器、定序器、簡(jiǎn)單復(fù)位/上電復(fù)位、智能開/關(guān)控制器、系統(tǒng)管理器、電壓檢測(cè)器和看門狗電路。

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.

Features

■ 5 V operating voltage

■ NVRAM supervisor for external LPSRAM

■ Chip-enable gating (STM818 only) for external LPSRAM (7 ns max prop delay)

■ RST and RSToutputs

■ 200 ms (typ) trec

■ Watchdog timer - 1.6 sec (typ)

■ Automatic battery switchover

■ Low battery supply current - 0.4 μA (typ)

■ 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