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STFPC320 Datasheet(PDF) 32 Page - STMicroelectronics

Part # STFPC320
Description  Front panel controller/driver with standby power management and real-time clock
PDF  78 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STFPC320 Datasheet(HTML) 32 Page - STMicroelectronics

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Real-time clock (RTC) operation
STFPC320
32/78
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:
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.
Table 8.
Initial power-on default values of the registers
ST
OF
OFIE
OUT
AFE
SQWE
RS3-1
RS0
Watchdog
01
0
1
0
0
0
1
0



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