12
12-60
Ver.0.10
SERIAL I/O
12.7 Receive Operation in UART Mode
Figure 12.7.4 Example of UART Reception (When Overrun Error Occurred)
Note 1 : Change of the Interrupt Controller "SIO Receive Interrupt Control Register" interrupt request bit
Note 2 : When receive-finished interrupt is enabled
Note 3 : When receive error interrupt is enabled
Note 4 : This is done by clearing the receive enable bit to 0.
Note 5 : The Interrupt Controller IVECT register is read or "SIO Receive Interrupt Control Register"
interrupt request bit cleared
First data reception
completed
Overrun error bit
Receive buffer not read
during this interval
Overrun error bit cleared
(Note 4)
Receive error interrupt
(Note 3)
<UART on transmit side>
RXD
TXD
Set
<UART on receive side>
<UART on receive side>
ST
D7
SP
ST
D7
SP
RXD
Set
SIO receive interrupt
(Note 1)
(When receive-finished
interrupt is selected)
(When receive error
interrupt is selected)
Receive-finished interrupt
(Note 2)
Interrupt request accepted (Note 5)
Interrupt request accepted (Note 5)
: Processing by software
: Interrupt generation
Next data reception
completed
(Note 5)
Receive enable bit
(SIO Receive
Control Register)
Receive-finished bit
Summary of Contents for M32170F3VFP
Page 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Page 56: ...2 2 14 Ver 0 10 This is a blank page ...
Page 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Page 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Page 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Page 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Page 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Page 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Page 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Page 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...