RM0367 Datasheet, PDF (785/1009 Pages) STMicroelectronics – This reference manual targets application developers

Universal synchronous asynchronous receiver transmitter (USART)
RM0367
29.7
USART interrupts
Table 130. USART interrupt requests
Interrupt event
Event flag
Enable Control
bit
Transmit data register empty
CTS interrupt
Transmission Complete
Receive data register not empty (data ready to be read)
Overrun error detected
Idle line detected
Parity error
LIN break
Noise Flag, Overrun error and Framing Error in multibuffer
communication.
Character match
Receiver timeout error
TXE
CTSIF
TC
RXNE
ORE
IDLE
PE
LBDF
NF or ORE or FE
CMF
RTOF
TXEIE
CTSIE
TCIE
RXNEIE
IDLEIE
PEIE
LBDIE
EIE
CMIE
RTOIE
End of Block
Wakeup from Stop mode
EOBF
WUF⁽¹⁾
EOBIE
WUFIE
1. The wUF interrupt is active only in Stop mode.
The USART interrupt events are connected to the same interrupt vector (see Figure 257).
• During transmission: Transmission Complete, Transmit data Register empty or
Framing error (in Smartcard mode) interrupt.
• During reception: Idle Line detection, Overrun error, Receive data register not empty,
Parity error, LIN break detection, Noise Flag, Framing Error, Character match, etc.
These events generate an interrupt if the corresponding Enable Control Bit is set.
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