M16C26 Datasheet, PDF (137/239 Pages) Renesas Technology Corp – 16-BIT CMOS SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES

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Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative
Clock Asynchronous Serial I/O (UART) Mode
and
subject to change.
SINGLE-CHIP 16-BIT
M16C/26 Group
CMOS MICROCOMPUTER
UARTi transmit / receive mode registers
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
UiMR(i=0,1)
Address
When reset
03A016, 03A816
0016
Bit symbol
Bit name
SMD0
SMD1
Serial I/O mode select bit
SMD2
CKDIR
STPS
Internal / external clock
select bit
Stop bit length select bit
PRY
Odd / even parity
select bit
PRYE Parity enable bit
Function
b2 b1 b0
1 0 0 : Transfer data 7 bits long
1 0 1 : Transfer data 8 bits long
1 1 0 : Transfer data 9 bits long
0 : Internal clock
1 : External clock (Note)
0 : One stop bit
1 : Two stop bits
Valid when bit 6 = “1”
0 : Odd parity
1 : Even parity
0 : Parity disabled
1 : Parity enabled
Reserved Must always be "0".
Note: Set the corresponding port direction register to "0".
RW
UART2 transmit / receive mode register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
U2MR
Address
037816
When reset
0016
Bit symbol
Bit name
SMD0
SMD1
Serial I/O mode select bit
SMD2
CKDIR
STPS
Internal / external clock
select bit
Stop bit length select bit
PRY
Odd / even parity
select bit
PRYE Parity enable bit
IOPOL
TxD, RxD I/O polarity
reverse bit (Note)
Note: Usually set to “0”.
Function
b2 b1 b0
1 0 0 : Transfer data 7 bits long
1 0 1 : Transfer data 8 bits long
1 1 0 : Transfer data 9 bits long
Must always be fixed to “0”
0 : One stop bit
1 : Two stop bits
Valid when bit 6 = “1”
0 : Odd parity
1 : Even parity
0 : Parity disabled
1 : Parity enabled
0 : No reverse
1 : Reverse
RW
Figure 1.15.18. UARTi transmit/receive mode register in UART mode
Renesas Technology Corp.
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