IDLE=B_0x0, FE=B_0x0, PE=B_0x0, TXE=B_0x0, RXNE=B_0x0, EOBF=B_0x0, CMF=B_0x0, CTSIF=B_0x0, NE=B_0x0, TCBGT=B_0x0, LBDF=B_0x0, RTOF=B_0x0, BUSY=B_0x0, RWU=B_0x0, CTS=B_0x0, SBKF=B_0x0, UDR=B_0x0
USART interrupt and status register [alternate]
| PE | Parity error 0 (B_0x0): No parity error 1 (B_0x1): Parity error |
| FE | Framing error 0 (B_0x0): No Framing error is detected 1 (B_0x1): Framing error or break character is detected |
| NE | Noise detection flag 0 (B_0x0): No noise is detected 1 (B_0x1): Noise is detected |
| ORE | Overrun error 1 (B_0x1): Overrun error is detected |
| IDLE | Idle line detected 0 (B_0x0): No Idle line is detected 1 (B_0x1): Idle line is detected |
| RXNE | Read data register not empty 0 (B_0x0): Data is not received 1 (B_0x1): Received data is ready to be read. |
| TC | Transmission complete |
| TXE | Transmit data register empty 0 (B_0x0): Data register full 1 (B_0x1): Data register full |
| LBDF | LIN break detection flag 0 (B_0x0): LIN Break not detected 1 (B_0x1): LIN break detected |
| CTSIF | CTS interrupt flag 0 (B_0x0): No change occurred on the CTS status line 1 (B_0x1): A change occurred on the CTS status line |
| CTS | CTS flag 0 (B_0x0): CTS line set 1 (B_0x1): CTS line reset |
| RTOF | Receiver timeout 0 (B_0x0): Timeout value not reached 1 (B_0x1): Timeout value reached without any data reception |
| EOBF | End of block flag 0 (B_0x0): End of Block not reached 1 (B_0x1): End of Block (number of characters) reached |
| UDR | SPI slave underrun error flag 0 (B_0x0): No underrun error 1 (B_0x1): underrun error |
| ABRE | Auto baud rate error |
| ABRF | Auto baud rate flag |
| BUSY | Busy flag 0 (B_0x0): USART is idle (no reception) 1 (B_0x1): Reception on going |
| CMF | Character match flag 0 (B_0x0): No Character match detected 1 (B_0x1): Character match detected |
| SBKF | Send break flag 0 (B_0x0): No break character transmitted 1 (B_0x1): Break character transmitted |
| RWU | Receiver wakeup from Mute mode 0 (B_0x0): Receiver in Active mode 1 (B_0x1): Receiver in Mute mode |
| WUF | Wakeup from low-power mode flag |
| TEACK | Transmit enable acknowledge flag |
| REACK | Receive enable acknowledge flag |
| TCBGT | Transmission complete before guard time flag 0 (B_0x0): Transmission is not complete or transmission is complete unsuccessfully (i.e. a NACK is received from the card) 1 (B_0x1): Transmission is complete successfully (before Guard time completion and there is no NACK from the smart card). |