STFPC320 datasheet(16/78 Pages) STMICROELECTRONICS

部件名	STFPC320

功能描述	Front panel controller/driver with standby power management and real-time clock

PDF	78 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

16 / 78 page

Functional description

STFPC320

16/78

4.4

Wake-up

The STFPC320 can wake-up from any one of the following sources:

●

Front-panel keys

●

Remote-control keys

●

Real-time clock (RTC) in 3 conditions (alarm, watchdog timer, oscillator fail)

●

External pin PIN_AV8 (only by a low-to-high transition on this pin)

Note:

When the hot-key is detected either from front-panel or remote control or RTC or from a low-

to-high transition on PIN_AV8 pin during standby, the STBY pin de-asserts.

The de-assertion of the STBY triggers the guard timer.

The timer value is the programmed value by the user (1-15s). If the user did not change the

value before entering standby, then it remains 10s.

Also note that the guard timer is off when the STFPC320 is in the standby mode.

Guard timer is thus triggered by a de-assertion of the STBY signal or by internal power on

reset signal.

Figure 6.

Wake-up

STFPC320 数据表(PDF) 16 Page - STMicroelectronics