ST STM32WL55JC Reference Manual page 1031

RM0453
32.6.23 RTC register map
Offset Register
RTC_TR
0x00
Reset value
RTC_DR
0x04
Reset value
RTC_SSR
0x08
Reset value 0
RTC_ICSR
0x0C
Reset value
RTC_PRER
0x10
Reset value
RTC_WUTR
0x14
Reset value 0
RTC_CR
0x18
Reset value 0
RTC_WPR
0x24
Reset value
RTC_ CALR
0x28
Reset value
RTC_SHIFTR
0x2C
Reset value 0
RTC_TSTR
0x30
Reset value
RTC_TSDR
0x34
Reset value
RTC_TSSSR
0x38
Reset value 0
Table 215. RTC register map and reset values
0
YT[3:0]
0 0
SS[31:16]
0 0 0 0 0 0 0 0 0
1
WUTOCLR[15:0]
0 0 0 0 0 0 0 0 0
SEL
[1:0]
0 0 0 0 0 0 0
0
0 0 0 0 0 0 0 0 0
HT
HU[3:0] MNT[2:0]
[1:0]
0 0 0 0 0 0 0
YU[3:0] WDU[2:0]
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0
PREDIV_A[6:0]
1 1 1 1 1 1 0 0
0 0 0 0 0 0 1 1
O
0 0 0 0 0 0 0 0
0 0
0
HU[3:0]
0 0 0 0 0 0 0
WDU[2:0]
0 0
SS[31:0]
0 0 0 0 0 0 0 0
RM0453 Rev 2
Real-time clock (RTC)
MNU[3:0] ST[2:0]
0 0 0 0 0 0 0 0
MU[3:0]
[1:0]
1 0 0 0 0 1 0
SS[15:0]
0 0 0 0 0 0 0 0 0
BCDU BIN
[2:0] [1:0]
0 0 0 0 0 0 0 0
PREDIV_S[14:0]
0 0 0 0 0 0 1 1 1
WUT[15:0]
1 1 1 1 1 1 1 1 1
0 0 0 0 0 0 0 0 0
0 0 0
CALM[8:0]
0 0 0 0 0 0
SUBFS[14:0]
0 0 0 0 0 0 0 0 0
MNU[3:0] ST[2:0]
0 0 0 0 0 0 0 0
MU[3:0]
[1:0]
0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
SU[3:0]
0 0 0 0 0
DT
DU[3:0]
0 0 0 0 1
0 0 0 0 0
0 0 1
1 1 1 1 1
1 1 1 1 1
WUCK
SEL[2:0]
0 0 0 0 0
KEY[7:0]
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
SU[3:0]
0 0 0 0 0
DT
DU[3:0]
0 0 0 0 0
0 0 0 0 0
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