RTC_INIT (INIT)

RTC_CAL (CAL)

RTC_LXTCTL (LXTCTL)

RTC_LXTOCTL (LXTOCTL)

RTC_LXTICTL (LXTICTL)

RTC_TAMPCTL (TAMPCTL)

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_SPRCTL (SPRCTL)

RTC_RWEN (RWEN)

RTC_SPR0 (SPR0)

RTC_SPR1 (SPR1)

RTC_SPR2 (SPR2)

RTC_SPR3 (SPR3)

RTC_SPR4 (SPR4)

RTC_SPR5 (SPR5)

RTC_SPR6 (SPR6)

RTC_SPR7 (SPR7)

RTC_SPR8 (SPR8)

RTC_SPR9 (SPR9)

RTC_SPR10 (SPR10)

RTC_SPR11 (SPR11)

RTC_SPR12 (SPR12)

RTC_SPR13 (SPR13)

RTC_SPR14 (SPR14)

RTC_SPR15 (SPR15)

RTC_FREQADJ (FREQADJ)

RTC_SPR16 (SPR16)

RTC_SPR17 (SPR17)

RTC_SPR18 (SPR18)

RTC_SPR19 (SPR19)

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 powered on, RTC is at reset state. User has to write a number (0x a5eb1357) to INIT to make RTC leaving reset state. Once the INIT is written as 0xa5eb1357, the RTC will be in un-reset state permanently.\nThe INIT 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

LXTEN : Backup Domain 32K Oscillator Enable Bit\nThis bit controls 32 kHz oscillator on/off. User can set either LXTEN in RTC battery power domain or system manager control register CLK_PWRCTL[1] (LXTEN) to enable 32 kHz oscillator. If this bit is set 1, X32 kHz oscillator keep running after system core power is turned off, if this bit is clear to 0, oscillator is turned off when system core power is turned off.
bits : 0 - 0 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

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 : GPF0 Operation Mode
bits : 0 - 1 (2 bit)
access : read-write

Enumeration:

End of enumeration elements list.

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

Enumeration:

End of enumeration elements list.

CTLSEL : IO Pin State Backup Selection\nWhen low speed 32 kHz oscillator is disabled, X32KO (PF.0) pin can be used as GPIO function. User can program CTLSEL bit to decide X32KO (PF.0) I/O function is controlled by system power domain GPIO module or VBAT power domain RTC_LXTOCTL control register.
bits : 3 - 3 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

OPMODE : IO Operation Mode
bits : 0 - 1 (2 bit)
access : read-write

Enumeration:

End of enumeration elements list.

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

Enumeration:

End of enumeration elements list.

CTLSEL : IO Pin State Backup Selection\nWhen low speed 32 kHz oscillator is disabled, X32KI (PF.1) pin can be used as GPIO function. User can program CTLSEL bit to decide X32KI (PF.1) I/O function is controlled by system power domain GPIO module or VBAT power domain RTC_LXTICTL control register.
bits : 3 - 3 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

OPMODE : IO Operation Mode
bits : 0 - 1 (2 bit)
access : read-write

Enumeration:

End of enumeration elements list.

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

Enumeration:

End of enumeration elements list.

CTLSEL : IO Pin State Backup Selection\nWhen tamper function is disabled, TAMPER pin can be used as GPIO function. User can program CTLSEL bit to decide PF.2 I/O function is controlled by system power domain GPIO module or VBAT power domain RTC_TAMPCTL control register.
bits : 3 - 3 (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 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
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)\nWhen RTC runs as 12-hour time scale mode, the high bit of TENHR (RTC_TIME[21]) means AM/PM indication.
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.

SNPDIEN : Snoop Detection Interrupt Enable Bit
bits : 2 - 2 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

ALMIF : RTC Alarm Interrupt Flag\nWhen RTC time counters RTC_TIME and RTC_CAL match the alarm setting time registers RTC_TALM and RTC_CALM, this bit will be set to 1 and an interrupt will be generated if RTC Alarm Interrupt enabled ALMIEN (RTC_INTEN[0]) is set to 1. Chip will be waken up if RTC Alarm Interrupt is enabled when chip is at Power-down mode.\nNote: Write 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 happened, this bit will be set to 1 and an interrupt will be generated if RTC Tick Interrupt enabled TICKIEN (RTC_INTEN[1]) is set to 1. Chip will also be waken up if RTC Tick Interrupt is enabled and this bit is set to 1 when chip is running at Power-down mode.\nNote: Write 1 to clear to clear this bit.
bits : 1 - 1 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

SNPDIF : Snoop Detect Interrupt Flag\nWhen tamper pin transition event is detected, this bit is set to 1 and an interrupt is generated if Snoop Detection Interrupt enabled SNPDIEN (RTC_INTEN[2]) is set to1. Chip will be waken up from Power-down mode if spare register snooper detect interrupt is enabled.\nNote: Write 1 to clear this bit.
bits : 2 - 2 (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. \nNote: This register can be read back after the RTC register access enable bit RWENF (RTC_RWEN[16]) is active.
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)
bits : 4 - 4 (1 bit)
access : read-write

MTENHR : Mask 10-Hour Time Digit of Alarm Setting (0~2)
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

SNPDEN : Snoop Detection Enable Bit
bits : 0 - 0 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

SNPTYPE0 : Snoop Detection Level\nThis bit controls TAMPER detect event is high level/rising edge or low level/falling edge.
bits : 1 - 1 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

SPRRWEN : Spare Register Enable Bit\nNote: When spare register is disabled, RTC_SPR0 ~ RTC_SPR19 cannot be accessed.
bits : 2 - 2 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

SNPTYPE1 : Snoop Detection Mode\nThis bit controls TAMPER pin is edge or level detection
bits : 3 - 3 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

SPRCSTS : SPR Clear Flag \nThis bit indicates if the RTC_SPR0 ~RTC_SPR19 content is cleared when specify snoop event is detected.\nWrites 1 to clear this bit.
bits : 5 - 5 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

SPRRWRDY : SPR Register Ready\nThis bit indicates if the registers RTC_SPRCTL, RTC_SPR0 ~ RTC_SPR19 are ready to be accessed.\nAfter user writing registers RTC_SPRCTL, RTC_SPR0 ~ RTC_SPR19, read this bit to check if these registers are updated done is necessary.\nNote: This bit is read only and any write to it won't take any effect.
bits : 7 - 7 (1 bit)
access : read-write

Enumeration:

End of enumeration elements list.

RWEN : RTC Register Access Enable Password (Write Only)\nWriting 0xA965 to this register will enable RTC access and keep 1024 RTC clock.
bits : 0 - 15 (16 bit)
access : write-only

RWENF : RTC Register Access Enable Flag (Read Only)\nThis bit will be set after RTC_RWEN[15:0] register is load a 0xA965, and be cleared automatically after 1024 RTC clock.
bits : 16 - 16 (1 bit)
access : read-only

Enumeration:

End of enumeration elements list.

SPARE : Spare Register\nThis field is used to store back-up information defined by user.\nThis field will be cleared by hardware automatically once a snooper pin event is detected.\nBefore storing back-up information in to RTC_SPRx register, user should write 0xA965 to RTC_RWEN[15:0] to make sure register read/write enable bit REWNF (RTC_RWEN[16]) is enabled.
bits : 0 - 31 (32 bit)
access : read-write

FRACTION : Fraction Part\nNote: Digit in RTC_FREQADJ must be expressed as hexadecimal number.
bits : 0 - 5 (6 bit)
access : read-write

INTEGER : Integer Part
bits : 8 - 11 (4 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)\nWhen 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