M16C29 Datasheet, PDF (196/499 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/Tiny SERIES

M16C/29 Group
14.Serial I/O
RxDi
1SP
STPS=0
SP
SP
2SP ^STPS=1
PAR
disabled
Clock
synchronous
PRYE=0 ^type
PAR
PAR PRYE=1 UART
enabled
Clock
synchronous type
UART (7 bits)
UART (8 bits)
UART (7 bits)
UART (9 bits)
Clock
synchronous type
UART (8 bits)
UART (9 bits)
UARTi receive register
0 0 0 0 0 0 0 D8
D7 D6 D5 D4 D3 D2 D1 D0
UARTi receive
buffer register
MSB/LSB conversion circuit
Data bus high-order bits
Address 03A616
Address 03A716
Address 03AE16
Address 03AF16
PAR
2SP STPS=1 ^enabled PRYE=1 UART
SP
SP
PAR
STPS=0
1SP
PRYE=0 Clock
synchronous
type
PAR
0 ^disabled
Data bus low-order bits
MSB/LSB conversion circuit
D8
D7 D6 D5 D4 D3 D2
UART (9 bits)
UART (8 bits)
UART (9 bits)
Clock synchronous
type
D1 D0
UARTi transmit
buffer register
Address 03A216
Address 03A316
Address 03AA16
Address 03AB16
UART (7 bits)
UART (8 bits)
Clock synchronous
type
UART (7 bits)
UARTi transmit register
TxDi
SP: Stop bit
PAR: Parity bit
SMD2 to SMD0, STPS, PRYE, IOPOL, CKDIR : Bits in the UiMR
Figure 14.2 Block diagram of UARTi (i = 0, 1) transmit/receive unit
Rev. 1.12 Mar.30, 2007 ^{page 172} of 458
REJ09B0101-0112