ST STM32WL55JC Reference Manual page 1203

RM0453
35.8.15 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
USART_RDR
0x24
Reset value
Universal synchronous/asynchronous receiver transmitter (USART/UART)
Table 246. 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
RM0453 Rev 2
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
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
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
RDR[8:0]
0 0 0 0 0 0
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