RTC_INIT (INIT)

RTC_CAL (CAL)

RTC_LXTCTL (LXTCTL)

RTC_LXTOCTL (LXTOCTL)

RTC_LXTICTL (LXTICTL)

RTC_PF2CTL (PF2CTL)

RTC_DSTCTL (DSTCTL)

RTC_CLKFMT (CLKFMT)

RTC_WEEKDAY (WEEKDAY)

RTC_TALM (TALM)

RTC_CALM (CALM)

RTC_LEAPYEAR (LEAPYEAR)

RTC_INTEN (INTEN)

RTC_INTSTS (INTSTS)

RTC_TICK (TICK)

RTC_TAMSK (TAMSK)

RTC_CAMSK (CAMSK)

RTC_RWEN (RWEN)

RTC_FREQADJ (FREQADJ)

RTC_TIME (TIME)

INIT_ACTIVE : RTC Active Status (Read Only)
bits : 0 - 0 (1 bit)
access : read-only

Enumeration:

End of enumeration elements list.

INIT : RTC Initiation\nWhen RTC block is first powered on, RTC is at reset state. User has to write a special number 0xA5EB1357 to INIT to make RTC leaving reset state. Once the INIT is written as 0xA5EB1357 the RTC will be at normal active state permanently.\nThe INIT[31:1] is a write-only field and read value will be always 0.
bits : 1 - 31 (31 bit)
access : read-write

DAY : 1-Day Calendar Digit (0~9)
bits : 0 - 3 (4 bit)
access : read-write

TENDAY : 10-Day Calendar Digit (0~3)
bits : 4 - 5 (2 bit)
access : read-write

MON : 1-Month Calendar Digit (0~9)
bits : 8 - 11 (4 bit)
access : read-write

TENMON : 10-Month Calendar Digit (0~1)
bits : 12 - 12 (1 bit)
access : read-write

YEAR : 1-Year Calendar Digit (0~9)
bits : 16 - 19 (4 bit)
access : read-write

TENYEAR : 10-Year Calendar Digit (0~9)
bits : 20 - 23 (4 bit)
access : read-write

GAIN : Oscillator Gain Option\nUser can select oscillator gain according to crystal external loading and operating temperature range. The larger gain value corresponding to stronger driving capability and higher power consumption.
bits : 1 - 3 (3 bit)
access : read-write

Enumeration:

End of enumeration elements list.

OPMODE : I/O Pin Operation Mode
bits : 0 - 1 (2 bit)
access : read-write

Enumeration:

End of enumeration elements list.

DOUT : I/O Pin Output Data
bits : 2 - 2 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

CTLSEL : I/O Pin State Backup Selection\nWhen low speed 32 kHz oscillator (LXT) is disabled, X32KO pin can be used as GPIO PF.0 function. User can program CTLSEL to decide X32KO (PF.0) I/O function is controlled by system power domain GPIO module or VBAT power domain RTC_LXTOCTL register.\nNote: CTLSEL will be set to 1 automatically by hardware when system power is turned off and RTC is at normal active state, ACTIVE (RTC_INIT[0]) is 1.
bits : 3 - 3 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

OPMODE : I/O Pin Operation Mode
bits : 0 - 1 (2 bit)
access : read-write

Enumeration:

End of enumeration elements list.

DOUT : IO Pin Output Data
bits : 2 - 2 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

CTLSEL : I/O Pin State Backup Selection\nWhen low speed 32 kHz oscillator (LXT) is disabled, X32KO pin can be used as GPIO PF.1 function. User can program CTLSEL to decide X32KI (PF.1) I/O function is controlled by system power domain GPIO module or VBAT power domain RTC_LXTICTL register.\nNote: CTLSEL will be set to 1 automatically by hardware when system power is turned off and RTC is at normal active state, ACTIVE (RTC_INIT[0]) is 1.
bits : 3 - 3 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

OPMODE : I/O Pin Operation Mode
bits : 0 - 1 (2 bit)
access : read-write

Enumeration:

End of enumeration elements list.

DOUT : I/O Pin Output Data
bits : 2 - 2 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

CTLSEL : I/O Pin State Backup Selection\nUser can program CTLSEL to decide GPIO PF.2 I/O function is controlled by system power domain GPIO module or VBAT power domain RTC_LXTICTL register.\nNote: CTLSEL will be set to 1 automatically by hardware when system power is turned off and RTC is at normal active state, ACTIVE (RTC_INIT[0]) is 1.
bits : 3 - 3 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

ADDHR : Add 1 Hour
bits : 0 - 0 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

SUBHR : Subtract 1 Hour
bits : 1 - 1 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

DSBAK : Daylight Saving Back
bits : 2 - 2 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

_24HEN : 24-hour / 12-hour Time Scale Selection\nIndicates that RTC_TIME and RTC_TALM register are in 24-hour time scale or 12-hour time scale
bits : 0 - 0 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

WEEKDAY : Day of the Week Register \nNote: RTC will not check WEEKDAY setting with RTC_CAL is reasonable or not.
bits : 0 - 2 (3 bit)
access : read-write

Enumeration:

End of enumeration elements list.

SEC : 1-Sec Time Digit of Alarm Setting (0~9)
bits : 0 - 3 (4 bit)
access : read-write

TENSEC : 10-Sec Time Digit of Alarm Setting (0~5)
bits : 4 - 6 (3 bit)
access : read-write

MIN : 1-Min Time Digit of Alarm Setting (0~9)
bits : 8 - 11 (4 bit)
access : read-write

TENMIN : 10-Min Time Digit of Alarm Setting (0~5)
bits : 12 - 14 (3 bit)
access : read-write

HR : 1-Hour Time Digit of Alarm Setting (0~9)
bits : 16 - 19 (4 bit)
access : read-write

TENHR : 10-Hour Time Digit of Alarm Setting (0~2)When RTC runs as 12-hour time scale mode, RTC_TIME[21] (the high bit of TENHR[1:0]) means AM/PM indication (If RTC_TIME[21] is 1, it indicates PM time message.)
bits : 20 - 21 (2 bit)
access : read-write

DAY : 1-Day Calendar Digit of Alarm Setting (0~9)
bits : 0 - 3 (4 bit)
access : read-write

TENDAY : 10-Day Calendar Digit of Alarm Setting (0~3)
bits : 4 - 5 (2 bit)
access : read-write

MON : 1-Month Calendar Digit of Alarm Setting (0~9)
bits : 8 - 11 (4 bit)
access : read-write

TENMON : 10-Month Calendar Digit of Alarm Setting (0~1)
bits : 12 - 12 (1 bit)
access : read-write

YEAR : 1-Year Calendar Digit of Alarm Setting (0~9)
bits : 16 - 19 (4 bit)
access : read-write

TENYEAR : 10-Year Calendar Digit of Alarm Setting (0~9)
bits : 20 - 23 (4 bit)
access : read-write

LEAPYEAR : Leap Year Indication Register (Read Only)
bits : 0 - 0 (1 bit)
access : read-only

Enumeration:

End of enumeration elements list.

ALMIEN : Alarm Interrupt Enable Bit
bits : 0 - 0 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

TICKIEN : Time Tick Interrupt Enable Bit
bits : 1 - 1 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

ALMIF : RTC Alarm Interrupt Flag\nWhen current RTC counter in RTC_TIME and RTC_CAL are matched RTC alarm settings in RTC_TALM and RTC_CALM, ALMIF will be set to 1 and an alarm interrupt signal will be generated if ALMIEN (RTC_INTEN[0]) is enabled. Chip will also be waken up when alarm interrupt signal occurred if chip is running at Power-down mode.\nNote: Writing 1 to clear this bit.
bits : 0 - 0 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

TICKIF : RTC Time Tick Interrupt Flag\nWhen RTC time tick event happened, TICKIF will be set to 1 and a time tick interrupt signal will be generated if TICKIEN (RTC_INTEN[1]) is enabled. Chip will also be waken up when time tick interrupt signal occurred if chip is running at Power-down mode.\nNote: Writing 1 to clear this bit.
bits : 1 - 1 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

TICK : Time Tick Register\nThese bits are used to select RTC time tick period for periodic time tick interrupt request.
bits : 0 - 2 (3 bit)
access : read-write

Enumeration:

End of enumeration elements list.

MSEC : Mask 1-Sec Time Digit of alarm setting (0~9)
bits : 0 - 0 (1 bit)
access : read-write

MTENSEC : Mask 10-Sec Time Digit of alarm setting (0~5)
bits : 1 - 1 (1 bit)
access : read-write

MMIN : Mask 1-Min Time Digit of alarm setting (0~9)
bits : 2 - 2 (1 bit)
access : read-write

MTENMIN : Mask 10-Min Time Digit of alarm setting (0~5)
bits : 3 - 3 (1 bit)
access : read-write

MHR : Mask 1-hour Time Digit of Alarm Setting (0~9)\nNote: MHR function is only for 24-hour time scale mode.
bits : 4 - 4 (1 bit)
access : read-write

MTENHR : Mask 10-hour Time Digit of Alarm Setting (0~2)\nNote: MTENHR function is only for 24-hour time scale mode.
bits : 5 - 5 (1 bit)
access : read-write

MDAY : Mask 1-Day Calendar Digit of alarm setting (0~9)
bits : 0 - 0 (1 bit)
access : read-write

MTENDAY : Mask 10-Day Calendar Digit of alarm setting (0~3)
bits : 1 - 1 (1 bit)
access : read-write

MMON : Mask 1-Month Calendar Digit of alarm setting (0~9)
bits : 2 - 2 (1 bit)
access : read-write

MTENMON : Mask 10-Month Calendar Digit of alarm setting (0~1)
bits : 3 - 3 (1 bit)
access : read-write

MYEAR : Mask 1-Year Calendar Digit of alarm setting (0~9)
bits : 4 - 4 (1 bit)
access : read-write

MTENYEAR : Mask 10-Year Calendar Digit of alarm setting (0~9)
bits : 5 - 5 (1 bit)
access : read-write

RWEN : RTC Register Access Enable Password (Write Only)\nWriting 0xA965 to this field will enable RTC register access period and keep 1024 RTC clocks.\nNote: Writing others vaule will clear RWENF and disable RTC register access function immediately.
bits : 0 - 15 (16 bit)
access : write-only

RWENF : RTC Register Access Enable Bit (Read Only) Note1: This bit will be set after RWEN is load a 0xA965, and be cleared automatically after 1024 RTC clocks expired. Note2: RWENF will be mask to 0 during RTCBUSY is 1, and first turn on RTCCKEN (CLK_APBCLK[1]) also.
bits : 16 - 16 (1 bit)
access : read-only

Enumeration:

End of enumeration elements list.

RTCBUSY : RTC Write Busy Flag\nThis bit indicates RTC registers are writable or not.\nNote: RTCBUSY falg will be set when execute write RTC register command exceed 6 times within 1120 PCLK cycles.
bits : 24 - 24 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

FREQADJ : Frequency Compensation Value\nUser has to get actual clock frequency of LXT, LXT frequency.\nNote: This formula is suitable only when RTCSEL (CLK_CLKSEL2[18]) is 0, RTC clock source is from LXT.
bits : 0 - 21 (22 bit)
access : read-write

SEC : 1-Sec Time Digit (0~9)
bits : 0 - 3 (4 bit)
access : read-write

TENSEC : 10-Sec Time Digit (0~5)
bits : 4 - 6 (3 bit)
access : read-write

MIN : 1-Min Time Digit (0~9)
bits : 8 - 11 (4 bit)
access : read-write

TENMIN : 10-Min Time Digit (0~5)
bits : 12 - 14 (3 bit)
access : read-write

HR : 1-Hour Time Digit (0~9)
bits : 16 - 19 (4 bit)
access : read-write

TENHR : 10-hour Time Digit (0~2)\nNote: When RTC runs as 12-hour time scale mode, RTC_TIME[21] (the high bit of TENHR[1:0]) means AM/PM indication, RTC_TIME[21] is 0 means AM hour and RTC_TIME[21] is 1 means PM hour.
bits : 20 - 21 (2 bit)
access : read-write