STFPC320 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STFPC320

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

STMicroelectronics 

Real-time clock (RTC) operation

STFPC320

6.11

Initial power-on defaults

Upon application of power to the device, the register bits in the RTC will initially power-on in

the state indicated in Table 8.

Note:

Table 8. Initial power-on default values of the registers

ST OF OFIE

OUT AFE

SQWE

RS3-1 RS0

0

1

0

1

0

0

0

1

Watchdog

0

All other control bits power-up in an undetermined state. The user should write the OF bit to

a 0 after 4s (after the oscillator has started up and the clock is stable). If the OFIE is to be

enabled, then write a ‘1’ to the OFIE bit in the RTC register.

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