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STFPC320 数据表(PDF) 26 Page - STMicroelectronics

部件名 STFPC320
功能描述  Front panel controller/driver with standby power management and real-time clock
PDF  78 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STFPC320 数据表(HTML) 26 Page - STMicroelectronics

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Real-time clock (RTC) operation
STFPC320
26/78
6.5
Register table for RTC
It is recommended to fill the unused bits in the register map to ‘0’ upon a cold boot up.
Table 4.
Register table for RTC
Addr
D7
D6
D5
D4
D3
D2
D1
D0
Function/range BCD format
00h
Reserved
Reserved
-
-
01h
ST
10 seconds
Seconds
Seconds
00-59
02h
OFIE
10 minutes
Minutes
Minutes
00-59
03h
0
0
10 hours
Hours (24-hour format)
Hours
00-23
04h
RS3
RS2
RS1
RS0
0
Day of week
Day
01-7
05h
1
0
10 date
Date: day of month
Date
01-31
06h
CB0
CB1
0
10M
Month
Century/month
0-3/01-12
07h
10 Years
Year
Year
00-99
08h
1
0
S
Calibration
Calibration
09h
RB2
BMB4
BMB3
BMB2
BMB1
BMB0
RB1
RB0
Watchdog
0Ah
AFE
SQWE
1
Al 10M
Alarm month
Al month
01-12
0Bh
RPT4
RPT5
Al 10 date
Alarm date
Al date
01-31
0Ch
RPT3
0
Al 10 Hour
Alarm Hour
Al hour
00-23
0Dh
RPT2
Alarm 10 minutes
Alarm minutes
Al min
00-59
0Eh
RPT1
Alarm 10 seconds
Alarm seconds
Al sec
00-59
0Fh
WDF
AF
0
0
0
Flags
Keys: S = sign bit
ST = stop bit
OFIE = oscillator fail interrupt enable bit
BMB0 – BMB4 = watchdog multiplier bits
CEB = century enable bit
CB = century bit
OUT = output level
SQWE = square wave enable bit
AFE = Alarm flag enable flag
RS0-RS3 = SQW frequency bits
RB0 – RB2 = watchdog resolution bits
RPT1 – RPT5 = alarm repeat mode bits
WDF = watchdog flag (read only)
AF = alarm flag (read only)
OF = Oscillator fail bit



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