12
12-17
Ver.0.10
SERIAL I/O
12.2 Serial I/O Related Registers
(1) CDIV (baud rate generator count source select) bits (D2, D3)
These bits select the count source for the baud rate generator (BRG).
Note : If f(BCLK) is selected as the count source for the BRG, make sure when you set BRG that
the baud rate will not exceed the maximum transfer rate. For details, refer to the section of
this manual where the BRG register is described.
(2) TSTAT (transmit status) bit (D5)
[Set condition]
This bit is set to 1 by a write to the Transmit Buffer Register when transmit is enabled.
[Clear condition]
This bit is cleared to 0 when transmit is idle (no data in the Transmit Shift Register) and no
data exists in the Transmit Buffer Register. This bit also is cleared by clearing the transmit
enable bit.
(3) TBE (transmit buffer empty) bit (D6)
[Set condition]
This bit is set to 1 when data is transferred from the Transmit Buffer Register to the
Transmit Shift Register and the Transmit Buffer Register becomes empty. This bit also is
set by clearing the transmit enable bit.
[Clear condition]
This bit is cleared to 0 by writing data to the lower byte of the Transmit Buffer Register when
transmit is enabled (TEN = 1).
(4) TEN (transmit enable) bit (D7)
Transmit is enabled by setting this bit to 1 and disabled by clearing this bit to 0. If this bit is cleared
to 0 while transmitting data, the transmit operation stops.
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 ...