Renesas M16C FAMILY Hardware Manual page 120

Under development Preliminary specification
Specifications in this manual are tentative and subject to change.
R8C/11 Group
1SP
RxDi SP
2SP
SP SP
Figure 13.2 UARTi Transmit/Receive Unit
Rev.0.91 2003 Sep 08
Clock
PRYE=0
synchronous
PAR
type
disabled
SP
PAR
PAR UART
enabled
PRYE=1
0 0 0 0 0 0
PRYE=0
PAR
UART
2SP enabled
PAR
1SP
PAR Clock
disabled
synchronous
type
PRYE=1
"0"
page 110 of 184
Clock
synchronous
type
UART (7 bits)
UART (7 bits)
UART (8 bits)
UART (9 bits)
Clock
synchronous type
UART (8 bits)
UART (9 bits)
0
D D D D
8 7 6 5
MSB/LSB conversion circuit
Data bus high-order bits
Data bus low-order bits
MSB/LSB conversion circuit
D D D
D
7 6 5
8
UART (8 bits)
UART (9 bits)
Clock
UART (9 bits)
synchronous
type
UART (7 bits)
UART (7 bits)
UART (8 bits)
Clock
synchronous
type
Note: Clock synchronous type is provide in UART0 only.
UARTi receive register
UiRB register
D D D D D
4 3 2 1 0
UiTB register
D D D D D
4 3 2 1 0
UARTi transmit register
i=0, 1
SP: Stop bit
PAR: Parity bit
13. Serial I/O
TxDi