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Universal synchronous asynchronous receiver transmitter (USART) RM0351

1368/1830 DocID024597 Rev 5

40.8.12 USART register map

The table below gives the USART register map and reset values.

Table 240. USART register map and reset values

Offset Register

0x00

USART_CR1

Res.

EOBIE

RTOIE

DEAT4

DEAT3

DEAT2

DEAT1

DEAT0

DEDT4

DEDT3

DEDT2

DEDT1

DEDT0

OVER8

CMIE

MME

WAKE

PCE

PEIE

TXEIE

TCIE

RXNEIE

IDLEIE

UESM

Reset value 0000000000000000 0000000000000

0x04

USART_CR2 ADD[7:4] ADD[3:0]

RTOEN

ABRMOD1

ABRMOD0

ABREN

MSBFIRST

DATAINV

TXINV

RXINV

SWAP

LINEN

STOP

[1:0]

CLKEN

CPOL

CPHA

LBCL

Res.

LBDIE

LBDL

ADDM7

Res.

Reset value 0000000000000000000 00000 000

0x08

USART_CR3

Res.

TCBGTIE

UCESM

WUFIE

WUS

SCARCNT2:0]

Res.

DEP

DEM

DDRE

OVRDIS

ONEBIT

CTSIE

CTSE

RTSE

DMAT

DMAR

SCEN

NACK

HDSEL

IRLP

IREN

EIE

Reset value

0000000 000 0000000000000

0x0C

USART_BRR

Res.

BRR[15:0]

Reset value 00 0 0000000000000

0x10

USART_GTPR

Res.

GT[7:0] PSC[7:0]

Reset value 00 0 0000000000000

0x14

USART_RTOR BLEN[7:0] RTO[23:0]

Reset value 0000000000000000000 0000000000000

0x18

USART_RQR

Res.

TXFRQ

RXFRQ

MMRQ

SBKRQ

ABRRQ

Reset value 00000

0x1C

USART_ISR

Res.

TCBGT

Res.

REACK

TEACK

WUF

RWU

SBKF

CMF

BUSY

ABRF

ABRE

Res.

EOBF

RTOF

CTS

CTSIF

LBDF

TXE

RXNE

IDLE

ORE

Reset value 1 000000000 0 000011000000

0x20

USART_ICR

Res.

WUCF

Res.

CMCF

Res.

EOBCF

RTOCF

Res.

CTSCF

LBDCF

TCBGTCF

TCCF

Res.

IDLECF

ORECF

NCF

FECF

PECF

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

0x24

USART_RDR

Res.

RDR[8:0]

Reset value XXXXXXXXX

Brand	ST
Model	STM32L4 5 Series
Category	Microcontrollers
Language	English

ST STM32L4 5 Series User Manual

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ST STM32L4 5 Series Specifications

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