M16C1N Datasheet, PDF (121/238 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/10 SERIES

M16C/1N Group
13. Serial I/O
RxDi
1SP
SP
SP
2SP
Clock
PAR
disabled
synchronous
type
PAR
PAR 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
Data bus low-order bits
MSB/LSB conversion circuit
D8
D7
D6
D5
D4
D3
D2
D1
D0
UARTi transmit
buffer register
UART (8 bits)
UART (9 bits)
2SP
PAR
enabled
UART
Clock
UART (9 bits) synchronous
type
SP
SP
PAR
1SP
PAR Clock
disabled ^synchronous
type
UART (7 bits)
UART (8 bits)
UART (7 bits)
UARTi transmit register
"0"
Clock
synchronous
type
SP: Stop bit
PAR: Parity bit
TxDi
Figure 13.2 Block diagram of transmit/receive unit
Rev.1.00 Oct 20, 2004 page 109 of 222
REJ09B0007-0100Z