STFPC320 STMicroelectronics, STFPC320 Datasheet - Page 23

• Manufacturer Part Number: STFPC320
• Description: Front Panel Controller/driver With Standby Power Management And Real-time Clock
• Manufacturer: STMicroelectronics

STFPC320
6.5
Table 3.
Addr
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
RPT4
RPT3
RPT2
RPT1
OFIE
WDF
RS3
CB0
RB2
AFE
D7
ST
0
1
1
Register table for RTC
Register table for RTC
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
It is recommended to fill the unused bits in the register map to ‘0’ upon a cold boot up.
SQWE
BMB4
RPT5
RS2
CB1
D6
AF
0
0
0
0
Reserved
Alarm 10 Seconds
10 Years
Alarm 10 Minutes
10 Seconds
10 Minutes
BMB3
RS1
D5
S
0
1
0
Al 10 Hour
Al 10 Date
10 Hours
10 Date
Al 10M
BMB2
RS0
10M
D4
0
BMB1
D3
0
0
Hours (24 Hour Format)
Calibration
Date: Day of Month
Alarm Seconds
Alarm Minutes
Alarm Month
Alarm Hour
BMB0
Alarm Date
Reserved
Seconds
D2
Minutes
Month
Year
Day of Week
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
RB1
D1
RB0
Real Time Clock (RTC) operation
D0
Function/Range BCD Format
Century/Month
Calibration
Watchdog
Seconds
Al Month
Minutes
Al Hour
Al Date
Al Sec
Al Min
Hours
Flags
Date
Year
Day
-
0-3/01-12
00-59
00-59
00-23
01-31
00-99
01-12
01-31
00-59
00-59
00-23
01-7
-
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