Universal synchonous receiver transmitter (USART)
33.8.15
USART register map
The table below gives the USART register map and reset values.
Register
Offset
name
USART_CR1
FIFO enabled
0x00
Reset value
0
USART_CR1
FIFO disabled
0x00
Reset value
USART_CR2
0x04
Reset value
0
USART_CR3
0x08
Reset value
0
USART_BRR
0x0C
Reset value
USART_GTPR
0x10
Reset value
USART_RTOR
0x14
Reset value
0
USART_RQR
0x18
Reset value
USART_ISR
FIFO mode
0x1C
enabled
Reset value
USART_ISR
FIFO mode
0x1C
disabled
Reset value
USART_ICR
0x20
Reset value
1084/1390
Table 187. USART register map and reset values
DEAT[4:0]
0
0
0
0
0
0
0
0
0
DEAT[4:0]
0
0
0
0
0
0
0
0
ADD[7:0]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
BLEN[7:0]
0
0
0
0
0
0
0
0
0
X X X X 1
0
0
0
DEDT[4:0]
0
0
0
0
0
0
0
0
DEDT[4:0]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
WUS
SCAR
[1:0]
CNT2:0]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
RM0444 Rev 5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
STOP
[1:0]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
BRR[15:0]
0
0
0
0
0
0
0
0
GT[7:0]
0
0
0
0
0
0
0
0
RTO[23:0]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
RM0444
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PSC[7:0]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Need help?
Do you have a question about the STM32G0 1 Series and is the answer not in the manual?
Questions and answers