CHAPTER 10 SERIAL INTERFACE FUNCTION
User’s Manual U14492EJ3V0UD
466
Figure 10-19. Asynchronous Serial Interface Reception Completion Interrupt Timing
(a) When stop bit length = 1 bit
Start
Parity
Stop
D0
RXDn (input)
INTSRn interrupt
Flag in reception
(SIRn)
D1
D2
D6
D7
(b) When stop bit length = 2 bits
Start
Parity
Stop
D0
RXDn (input)
INTSRn interrupt
Flag in reception
(SIRn)
D1
D2
D6
D7
(c) In 2-frame continuous transmission mode
Start
Start
Parity
Stop
Parity
Stop
D0
RXDn (input)
INTSRn interrupt
Flag in reception
(SIRn)
D1
1st frame
2nd frame
D1
D5
D6
D7
Cautions 1. Even if a reception error occurs, be sure to read 2-frame continuous reception buffer
register n (RXBn)/reception buffer register n (RXBLn). If the RXBn or RXBLn register is not
read, an overrun error will occur at the next data reception, and the reception error state will
continue indefinitely.
2. Reception is always performed with the stop bit length set to 1 bit. A second stop bit is
ignored.
Содержание V850E/IA1 mPD703116
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