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- // PCA2129T RTC Registers
- Register: Control_1 0x00
- =====================================================================================
- 7 6 5 4 3 2 1 0
- EXT_TEST T STOP TSF1 POR_OVRD 12_24 MI SI
- | | | | | | | |
- | | | | | | | |
- | | | | | | | SI
- | | | | | | | 0=Second interrupt disabled
- | | | | | | | 1=Second interrupt enabled.
- | | | | | | |
- | | | | | | MI
- | | | | | | 0=Minute interrupt diabled
- | | | | | | 1=Minute interrupt enabled
- | | | | | |
- | | | | | 12_24
- | | | | | 0=24 hour mode
- | | | | | 1=12 hour mode
- | | | | |
- | | | | POR_OVRD
- | | | | 0=Power-On reset Overrride (default)
- | | | | 1=Power-On reset Override enabled
- | | | |
- | | | TSF1
- | | | 0=no Timestamp Interrupt
- | | | 1=Flag on TS interrup (flag must be cleared to clear interrupt)
- | | |
- | | STOP
- | | 0=RTC source clock runs
- | | 1=RTC clock is stopped
- | |
- | T=Unused
- |
- |
- EXT_TEST
- 0 - normal mode
- 1 - external clock
- test mode
- Register: Control_2 0x01
- =====================================================================================
- 7 6 5 4 3 2 1 0
- MSF WDTF TSF2 AF T TSIE AIE T
- | | | | | | | |
- | | | | | | | T=unused
- | | | | | | |
- | | | | | | AIE (Alarm Interrupt Enabled)
- | | | | | | 0=Alarm Interrupt Disabled
- | | | | | | 1=Alarm Interrupt Enabled
- | | | | | |
- | | | | | TSIE (TimeStamp Interrup Enabled)
- | | | | | 0=TimeStamp Interrupt Enabled
- | | | | | 1=TimeStamp Interrupt Disabled
- | | | | |
- | | | | T=Unused
- | | | |
- | | | AF
- | | | 0=Alarm Flag: No Alarm
- | | | 1=Alarm Flag: Alarm Triggered (must be cleared)
- | | |
- | | TSF2
- | | 0=TimeStampFlag2: No Timestamp
- | | 1=TimeStampFlag2: Timestamp Triggered (must be cleared)
- | |
- | WDTF (Watchdog Timer Flag)
- | 0=WTD No flag
- | 1=WDT flag set (cannot be cleared read-only)
- |
- MSF
- 0=Minute Second Flag not set
- 1=Minute Second Flag Set (must be cleared)
- Register: Control_3 0x02
- =====================================================================================
- 7 6 5 4 3 2 1 0
- PWRMNG | | BTSE BF BLF BIE BLIE
- | | | | | | | |
- | | | | | | | BLIE
- | | | | | | | 0=Battery Low Interrupt Disabled
- | | | | | | | 1=Battery Low Interrupt Enabled
- | | | | | | BIE
- | | | | | | 0=Battery Interrupt Disabled
- | | | | | | 1=Battery Interrupt Enable
- | | | | | BLF
- | | | | | 0=Battery Status OK
- | | | | | 1=Battery Status LOW
- | | | | BF
- | | | | 0=no battery switch over interrupt generated
- | | | | 1=flag set when batter switch-over occurs (must be cleared)
- | | | BTSE
- | | | 0=No timestamp when battery swtich-over occurs
- | | | 1=timestamped when battery swtich over occurs
- | | |
- PWRMNG
- 000 battery switch-over function is enabled in standard mode; battery low detection function is enabled
- 001 battery switch-over function is enabled in standard mode; battery low detection function is disabled
- 010 battery switch-over function is enabled in standard mode; battery low detection function is disabled
- 011 battery switch-over function is enabled in direct switching mode; battery low detection function is enabled
- 100 battery switch-over function is enabled in direct switching mode; battery low detection function is disabled
- 101 battery switch-over function is enabled in direct switching mode; battery low detection function is disabled
- 111 battery switch-over function is disabled, only one power supply (V DD); battery low detection function is disabled
- */
PCA2129T RTC
Posted by Anonymous on Sat 11th Oct 2014 18:50
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