STM704SDS6F

3V监控器，电池切换 3V Supervisor with Battery Switchover

The STM690/704/795/802/804/805/806 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 VCCinput for an out-of-tolerance condition. When an invalid VCCcondition occurs, the reset output RST is forced low or high in the case of RST. These devices also offer a watchdog timer except for STM704/795/806 as well as a power-fail comparator except for STM795 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.

**Key Features**

.

RST orRST outputs

.

NVRAM supervisor for external LPSRAM

.

Chip enable gating STM795 only for external LPSRAM 7 ns max prop delay

.

Manual push-button reset input

.

200 ms typ trec

.

Watchdog timer - 1.6 s typ

.

Automatic battery switchover

.

Low battery supply current - 0.4 μA typ

.

Power-fail comparator PFI/PFO

.

Low supply current - 40 μA typ

.

GuaranteedRST 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