RM0367 Rev 7 223/1043
RM0367 Reset and clock control (RCC)
225
7.3.22 RCC register map
The following table gives the RCC register map and the reset values.
Table 42. RCC register map and reset values
Off-
set
Register
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0x00
RCC_CR
Res.
Res.
Res.
Res.
Res.
Res.
PLL RDY
PLL ON
Res.
Res.
RTC
PRE
[1:0]
CSSLSEON
HSEBYP
HSERDY
HSEON
Res.
Res.
Res.
Res.
Res.
Res.
MSIRDY
MSION
Res.
Res.
HSI16OUTEN
HSI16DIVF
HSI16DIVEN
HSI16RDYF
HSI16KERON
HSI16ON
Reset value 00 XX0X00 11 000000
0x04
RCC_ICSCR MSITRIM[7:0] MSICAL[7:0]
MSIRAN
GE[2:0]
HSI16TRIM[4:0
]
HSI16CAL[7:0]
Reset value 00000000xxxxxxxx10110000xxxxxxxx
0x08
RCC_CRRCR
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
HSI48CAL[7:0]
Res.
Res.
Res.
Res.
Res.
HSI48DIV6EN
HSI48RDY
HSI48ON
Reset value 00000000 000
0x0C
RCC_CFGR
Res.
MCOPR
E
[2:0]
Res.
MCOSE
L [3:0]
PLL
DIV
[1:0]
PLLMUL[3:
0]
Res.
PLLSRC
STOPWUCK
Res.
PPRE2
[2:0]
PPRE1
[2:0]
HPRE[3:0]
SWS
[1:0]
SW
[1:0]
Reset value 000 000000000 00 00000000000000
0x10
RCC_CIER
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
CSSLSE
HSI48RDYIE
MSIRDYIE
PLLRDYIE
HSERDYIE
HSI16RDYIE
LSERDYIE
LSIRDYIE
Reset value 00000000
0x14
RCC_CIFR
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
CSSHSEF.
CSSLSEF.
HSI48RDYF
MSIRDYF
PLLRDYF
HSERDYF
HSI16RDYF
LSERDYF
LSIRDYF
Reset value 000000000
0x18
RCC_CICR
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
CSSHSEC.
CSSLSEC.
HSI48RDYC
MSIRDYC
PLLRDYC
HSERDYC
HSI16RDYC
LSERDYC
LSIRDYC
Reset value 000000000
0x1C
RCC_IOPRSTR
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
Res.
IOPHRS
Res.
Res.
IOPERST
IOPDRS
IOPCRS
IOPBRST
IOPARST
Reset value 0 00000
0x20
RCC_AHBRSTR
Res.
Res.
Res.
Res.
Res.
Res.
Res.
CRYPRST
Res.
Res.
Res.
RNGRST
Res.
Res.
Res.
TSCRST
Res.
Res.
Res.
CRCRST
Res.
Res.
Res.
MIFRST
Res.
Res.
Res.
Res.
Res.
Res.
Res.
DMARST
Reset value 0 0 0 0 0 0
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