To Next Page

To Previous Page

RM0402 Rev 6 653/1163

RM0402 Real-time clock (RTC)

655

22.6.20 RTC backup registers (RTC_BKPxR)

Address offset: 0x50 to 0x9C

Backup domain reset value: 0x0000 0000

System reset: not affected

22.6.21 RTC register map

31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

BKP[31:16]

rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rw

1514131211109876543210

BKP[15:0]

rw rw rw rw rw rw rw rw rw rw rw rw rw w rw rw

Bits 31:0 BKP[31:0]

The application can write or read data to and from these registers.

They are powered-on by V

BAT

when V

is switched off, so that they are not reset by

System reset, and their contents remain valid when the device operates in low-power mode.

This register is reset on a tamper detection event, as long as TAMPxF=1.

Table 114. RTC register map and reset values

Offset Register

0x00

RTC_TR

Res.

[1:0]

HU[3:0]

Res.

MNT[2:0] MNU[3:0]

Res.

ST[2:0] SU[3:0]

Reset value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0x04

RTC_DR

Res.

YT[3:0] YU[3:0] WDU[2:0]

MU[3:0]

Res.

[1:0]

DU[3:0]

Reset value 0 0 100001 0000 0 1

0x08

RTC_CR

Res.

COE

OSEL

[1:0]

POL

COSEL

BKP

SUB1H

ADD1H

TSIE

WUTIE

ALRBIE

ALRAIE

TSE

WUTE

ALRBE

ALRAE

DCE

FMT

BYPSHAD

REFCKON

TSEDGE

WCKSEL

[2:0]

Reset value 00 0000000 0 0 00000000000 0 0

0x0C

RTC_ISR

Res.

TAMP1F

TSOVF

TSF

WUTF

ALRBF

ALRAF

INIT

INITF

RSF

INITS

SHPF

WUTWF

ALRBWF

ALRAWF

Reset value 00000000000101

0x10

RTC_PRER

Res.

PREDIV_A[6:0]

Res.

PREDIV_S[14:0]

Reset value 1 1 11111 0 0 00000111111 11

0x14

RTC_WUTR

Res.

WUT[15:0]

Reset value 1 1 111111111111 11

0x18

RTC_CALIBR

Res.

DCS

Res.

DC[4:0]

Reset value 000000

Brand	ST
Model	STM32F412
Category	Microcontrollers
Language	English

ST STM32F412 User Manual

Table of Contents

Questions and Answers:

ST STM32F412 Specifications

Related product manuals