M16C65 Datasheet, PDF (574/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
23. Serial Interface UARTi (i = 0 to 2, 5 to 7)
Table 23.22 Registers Used and Settings in Special Mode 2
Register
Bits
Function
UiTB ^{(1) 0 to 7}
Set transmission data.
UiRB ^{(2) 0 to 7}
Reception data can be read.
OER
Overrun error flag
UiBRG 0 to 7
Set bit rate.
UiMR ^{(2) SMD2 to SMD0}
Set to 001b.
CKDIR
Set to 0 in master mode or 1 in slave mode.
IOPOL
Set to 0.
UiC0
CLK0, CLK1
Select the count source for the UiBRG register.
CRS
Invalid because CRD is 1
TXEPT
Transmit register empty flag
CRD
Set to 1.
NCH
Select TXDi pin output format. ⁽¹⁾
CKPOL
Clock phases can be set in combination with the CKPH bit in the
UiSMR3 register.
UFORM
Select the LSB first or MSB first.
UiC1
TE
Set to 1 to enable transmission/reception.
TI
Transmit buffer empty flag
RE
Set to 1 to enable reception.
RI
Reception complete flag
UjIRS
Select UARTj transmit interrupt source.
UjRRM
Set to 1 to use continuous receive mode.
UiLCH
Set to 1 to use inverted data logic.
UiERE
Set to 0.
UiSMR 0 to 7
Set to 0.
UiSMR2 0 to 7
Set to 0.
UiSMR3 CKPH
Clock phases can be set in combination with the CKPOL bit in the UiC0
register.
NODC
Set to 0.
0, 2, 4 to 7
Set to 0.
UiSMR4 0 to 7
Set to 0.
UCON U0IRS
Select UART0 transmit interrupt source.
U1IRS
Select UART1 transmit interrupt source.
U0RRM
Set to 1 to use continuous receive mode.
U1RRM
Set to 1 to use continuous receive mode.
CLKMD0
Invalid because CLKMD1 is 0
CLKMD1, RCSP, 7 Set to 0.
IFSR3A IFSR34
Set to 0 to use UART5 transmit interrupt.
IFSR36
Set to 0 to use UART6 transmit interrupt.
IFSR2A ^IFSR25
Set to 0 to use UART7 transmit interrupt.
i = 0 to 2, 5 to 7 j = 2, 5 to 7
Notes:
1. The TXD2 pin is N channel open-drain output. No NCH bit in the U2C0 register is assigned. Only
write 0 to this bit.
2. Set the bits not listed above to 0 when writing to the registers in special mode 2.
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
Page 539 of 791