12
12-46
Ver.0.10
SERIAL I/O
12.6 Transmit Operation in UART Mode
12.6.2 UART Transmit/Receive Data Formats
The transmit/receive data format during UART mode is determined by setting the SIO Transmit/
Receive Mode Register. Shown below is the transmit/receive data format that can be used in UART
mode.
Figure 12.6.1 Example of Transmit/Receive Data Format in UART Mode
Table 12.6.1 Transfer Data in UART Mode
Bit Name
Content
ST (start bit)
Indicates the beginning of data transmission. This is a low signal of a one bit
duration, which is added immediately before the transmit data.
D0-D8 (character bits)
Transmit/receive data transferred via serial I/O. In UART mode, data in 7, 8, or
9 bits can be transmitted/received.
PAR (parity bit)
Added to the transmit/receive characters. When parity is enabled, parity is
automatically set in such a way that the number of 1's in characters including
the parity bit itself is always even or odd as selected by the even/odd parity
select bit.
SP (stop bit)
Indicates the end of data transmission, and is added immediately after
characters (or if parity enabled, immediately after the parity bit). The stop bit can
be chosen to be one bit or two bits long.
ST
D7
D6
D5
D4
D3
D2
D1
D0
PAR
SP
SP
LSB
MSB
ST
Parity bit
Stop bit
Start bit
Data bits (8 bits)
Transmit data
Next
data
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 ...