M16C62P_06 Datasheet, PDF (198/421 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

M16C/62P Group (M16C/62P, M16C/62PT)
17. Serial Interface
UARTi Transmit/Receive Mode Register (i=0 to 2)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
Address
After Reset
U0MR to U2MR 03A0h, 03A8h, 0378h
00h
Bit Symbol
Bit Name
Function
RW
Serial I/O Mode Select Bit ⁽²⁾ b2 b1 b0
SMD0
0 0 0 : Serial interface disabled
RW
0 0 1 : Clock synchronous serial I/O mode
0 1 0 : I²C mode ⁽³⁾
SMD1
1 0 0 : UART mode transfer data 7 bits long
RW
1 0 1 : UART mode transfer data 8 bits long
1 1 0 : UART mode transfer data 9 bits long
SMD2
Do not set except above
RW
Internal/External Clock Select 0 : Internal clock
CKDIR _Bit
1 : External clock ⁽¹⁾
RW
Stop Bit Length Select Bit
0 : 1 stop bit
STPS
1 : 2 stop bits
RW
Odd/Even Parity Select Bit
Effective w hen PRYE = 1
PRY
0 : Odd parity
RW
1 : Even parity
Parity Enable Bit
0 : Parity disabled
PRYE
1 : Parity enabled
RW
TXD, RXD I/O Polarity Reverse 0 : No reverse
IOPOL _Bit
1 : Reverse
RW
NOTES :
1. Set the corresponding port direction bit for each CLKi pin to “0” (input mode).
2. To receive data, set the corresponding port direction bit for each RXDi pin to “0” (input mode).
3. Set the corresponding port direction bit for SCL and SDA pins to “0” (input mode).
Figure 17.7 UiMR Register
Rev.2.41 Jan 10, 2006 Page 183 of 390
REJ09B0185-0241