Renesas M16C Series User Manual

UART0 to UART2
M30240 Group
Rev.1.00 Sep 24, 2003 Page 79 of 360
Figure 1.74: Block diagram of UARTi (i=0,1) transmit/receive circuit
Figure 1.75: Block diagram of UART2 transmit/receive circuit
SP SP
PA R
2SP
1SP
UART
UART (7 bits)
UART (8 bits)
UART (7 bits)
UART (9 bits)
Clock
synchronous
type
Clock synchronous
type
TxDi
UARTi transmit register
PAR
enabled
PAR
disabled
D8
D7 D6 D5 D4 D3 D2 D1 D0
SP: Stop bit
PAR: Parity bit
UARTi transmit
buffer register
MSB/LSB conversion circuit
UART (8 bits)
UART (9 bits)
Clock synchronous
type
UARTi receive
buffer register
UARTi receive register
2SP
1SP
PAR
enabled
PAR
disabled
UART
UART (7 bits)
UART (9 bits)
Clock
synchronous
type
Clock
synchronous type
UART (7 bits)
UART (8 bits)
RxDi
Clock
synchronous type
UART (8 bits)
UART (9 bits)
Address 03A6 16
Address 03A7 16
Address 03AE 16
Address 03AF 16
Address 03A2 16
Address 03A3 16
Address 03AA 16
Address 03AB 16
Data bus low-order bits
MSB/LSB conversion circuit
D7 D6 D5 D4 D3 D2 D1 D0D8
0000000
SP SP
PA R
“0”
SP SP
PA R
2SP
1SP
UART
UART
(7 bits)
UART
(8 bits)
UART(7 bits)
UART
(9 bits)
Clock
synchronous
type
Clock
synchronous type
Data bus low-order bits
TxD2
UART2 transmit register
PAR
disabled
PAR
enabled
D8
D7 D6 D5 D4 D3 D2 D1 D0
UART2 transmit
buffer register
UART
(8 bits)
UART
(9 bits)
Clock
synchronous type
UART2 receive
buffer register
UART2 receive register
2SP
1SP
UART
(7 bits)
UART
(8 bits)
UART(7 bits)
UART
(9 bits)
Clock
synchronous type
Clock
synchronous type
RxD2
UART
(8 bits)
UART
(9 bits)
Address 037E
16
Address 037F16
Address 037A16
Address 037B16
Data bus high-order bits
D7 D6 D5 D4 D3 D2 D1 D0D8
0000000
SP SP
PA R
“0”
Reverse
No reverse
Error signal
output circuit
RxD data
reverse circuit
Error signal output
enable
Error signal output
disable
Reverse
No reverse
Logic reverse circuit + MSB/LSB conversion circuit
Logic reverse circuit + MSB/LSB conversion circuit
PAR
enabled
PAR
disabled
UART
Clock
synchronous
type
TxD data
reverse circuit
SP: Stop bit
PAR: Parity bit
PAR: Parity bit

Renesas M16C Series Specifications

General

Brand	Renesas
Model	M16C Series
Category	Computer Hardware
Language	English