M16C62N Datasheet, PDF (92/213 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Serial I/O
Mitsubishi microcomputers
M16C / 62N Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
UARTi transmit/receive mode register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
UiMR(i=0,1)
Address
When reset
03A016, 03A816
0016
Bit
symbol
Bit name
SMD0 Serial I/O mode
select bit
SMD1
SMD2
Function
(During clock synchronous
serial I/O mode)
Must always be 001
b2 b1 b0
0 0 0 : Serial I/O invalid
0 1 0 : Must not be set
0 1 1 : Must not be set
1 1 1 : Must not be set
CKDIR ^{Internal/external}
clock select bit
STPS
PRY
Stop bit length
select bit
Odd/even parity
select bit
0 : Internal clock
1 : External clock (Note)
Invalid
Invalid
PRYE Parity enable bit
Invalid
SLEP ^{Sleep select bit}
Must always be “0”
Note : Set the corresponding port direction register to “0”.
Function
(During UART mode)
RW
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 0 0 : Serial I/O invalid
0 1 0 : Must not be set
0 1 1 : Must not be set
1 1 1 : Must not be set
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
0 : Sleep mode deselected
1 : Sleep mode selected
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
Function
(During clock synchronous
serial I/O mode)
Clock synchronous serial
I/O mode can not be used
in UART2 (Note).
Function
(During UART mode)
RW
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 0 0 : Serial I/O invalid
0 1 0 : Must not be set
0 1 1 : Must not be set
1 1 1 : Must not be set
CKDIR ^{Internal/external}
clock select bit
Must always be “0”
STPS
PRY
Stop bit length
select bit
Odd/even parity
select bit
PRYE Parity enable bit
IOPOL ^{TxD, RxD I/O}
polarity reverse bit
Note : Bit 2 to bit 0 are set to “0102” when I²C mode is used.
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
Usually set to “0”
Figure 1.14.5. Serial I/O-related registers (2)
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