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Reset and clock control (RCC) RM0390

172/1328 RM0390 Rev 4

6.3.28 RCC register map

Table 21 gives the register map and reset values.

Table 21. RCC register map and reset values

Addr.

offset

name

0x00

RCC_CR

Res.

PLL SAIRDY

PLL SAION

PLL I2SRDY

PLL I2SON

PLL RDY

PLL ON

Res.

CSSON

HSEBYP

HSERDY

HSEON

HSICAL[7:0] HSITRIM[4:0]

Res.

HSIRDY

HSION

Reset value 000000 0000xxxxxxxx10000 11

0x04

RCC_PLL

CFGR

Res.

PLLR

[2:0]

PLLQ[3:0]

Res.

PLLSRC

Res.

PLLP

[1:0]

Res.

PLLN[8:0] PLLM[5:0]

Reset value 0100100 0 00 011000000010000

0x08

RCC_CFGR

MCO

[1:0]

MCO2

PRE

[2:0]

MCO1

PRE

[2:0]

Res.

MCO

[1:0]

RTCPRE[4:0]

PPRE2

[2:0]

PPRE1

[2:0]

Res.

HPRE[3:0]

SWS

[1:0]

Reset value 00000000 0000000000000 00000000

0x0C

RCC_CIR

Res.

CSSC

PLLSAIRDYC

PLLI2SRDYC

PLLRDYC

HSERDYC

HSIRDYC

LSERDYC

LSIRDYC

Res.

PLLSAIRDYIE

PLLI2SRDYIE

PLLRDYIE

HSERDYIE

HSIRDYIE

LSERDYIE

LSIRDYIE

CSSF

PLLSAIRDYF

PLLI2SRDYF

PLLRDYF

HSERDYF

HSIRDYF

LSERDYF

LSIRDYF

Reset value 00000000 000000000000000

0x10

RCC_AHB1

RSTR

Res.

OTGHSRST

Res.

DMA2RST

DMA1RST

Res.

CRCRST

Res.

GPIOHRST

GPIOGRST

GPIOFRST

GPIOERST

GPIODRST

GPIOCRST

GPIOBRST

GPIOARST

Reset value 0 00 0 00000000

0x14

RCC_AHB2

RSTR

Res.

OTGFSRST

Res.

DCMIRST

Reset value 00

0x18

RCC_AHB3

RSTR

Res.

QSPIRST

FMCRST

Reset value 00

0x1C

Reserved

Res.

Reset value

0x20

RCC_APB1

RSTR

Res.

Res

DACRST

PWRRST

CECRST

CAN2RST

CAN1RST

FMPI2C1RST

I2C3RST

I2C2RST

I2C1RST

UART5RST

UART4RST

UART3RST

UART2RST

SPDIFRXRST

SPI3RST

SPI2RST

Res.

WWDGRST

Res.

TIM14RST

TIM13RST

TIM12RST

TIM7RST

TIM6RST

TIM5RST

TIM4RST

TIM3RST

TIM2RST

Reset value 0000000000000000 0 000000000

Brand	ST
Model	STM32F446 Series
Category	Microcontrollers
Language	English

ST STM32F446 Series User Manual

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