M16C26A Datasheet, PDF (156/352 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/26A Group (M16C/26A, M16C/26B, M16C/26T)
13. Serial I/O
UARTi Transmit/receive Control Register 1 (i=0, 1)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
U0C1, U1C1
Address
03A516,03AD16
After Reset
000000102
Bit
Symbol
Bit Name
Function
RW
TE
Transmit enable bit
0 : Transmission disabled
1 : Transmission enabled
RW
TI
Transmit buffer
empty flag
0 : Data in UiTB register
1 : No data in UiTB register
RO
RE
Receive enable bit
0 : Reception disabled
1 : Reception enabled
RW
RI
Receive complete flag 0 : No data in UiRB register
1 : Data in UiRB register
RO
Nothing is assigned.
(b7-b4) When write, set “0”. When read, the contents are “0”.
UART2 Transmit/receive Control Register 1
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
U2C1
Address
037D16
After Reset
000000102
Bit
Symbol
Bit Name
Function
RW
TE Transmit enable bit
0 : Transmission disabled
1 : Transmission enabled
RW
TI ^{Transmit buffer}
empty flag
0 : Data in U2TB register
1 : No data in U2TB register
RO
RE Receive enable bit
0 : Reception disabled
1 : Reception enabled
RW
RI Receive complete flag 0 : No data in U2RB register
RO
1 : Data in U2RB register
U2IRS UART2 transmit interrupt 0 : Transmit buffer empty (TI = 1)
RW
cause select bit
1 : Transmit is completed (TXEPT = 1)
U2RRM UART2 continuous
0 : Continuous receive mode disabled
receive mode enable bit 1 : Continuous receive mode enabled
RW
U2LCH Data logic select bit
0 : No reverse
1 : Reverse
RW
U2ERE Error signal output
enable bit
0 : Output disabled
1 : Output enabled
RW
Pin Assignment Control Register ⁽¹⁾
b7 b6 b5 b4 b3 b2 b1 b0
Symbpl
PACR
Address
025D16
After Reset
0016
Bit Symbol
Bit Name
PACR0 ^{Pin enabling bit}
PACR1
PACR2
Reserved bits
(b6-b3)
Function
RW
001 : 42 pin
RW
100 : 48 pin
All other values are reserved. Do ^RW
not use.
RW
Nothing is assigned. When write,
set to “0”. When read, its
content is “0”.
UART1 pin remapping bit UART1 pins assigned to
U1MAP
0 : P67 to P64
RW
1 : P73 to P70
NOTES:
1. Set the PACR register by the next instruction after setting the PRC2 bit in the PRCR register to "1"(write
enable).
Figure 13.1.7. U0C1 to U2C1 registers, PACR register
Rev. 2.00 Feb.15, 2007 ^{page 139} of 329
REJ09B0202-0200