M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 378

• Manufacturer Part Number: M30622MA-XXXFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
• Manufacturer: RENESAS [Renesas Technology Corp]

UART
Figure 2.5.11. Operation timing of reception in UART mode
Example of wiring
Example of operation
Receive enable
bit (RE)
RxD
RTS
BRGi's count
source
Transfer clock
Receive
complete flag
(RI)
Receive interrupt
request bit
(IR)
i
i
“1”
“0”
“1”
“0”
“H”
“L”
“1”
“0”
Timing of transfer data 8 bits long applies to the following settings :
(1) Reception enabled
•Transfer data length is 8 bits.
•Parity is disabled.
•One stop bit
•RTS function is selected.
(2) Start reception
Reception started when transfer
clock is generated by falling edge
of start bit
Microcomputer
Start bit
Sampled “L”
R
RTSi
X
Di
Cleared to “0” when interrupt request is accepted, or cleared by software
D
Transferred from UARTi receive register
to UARTi receive buffer register
0
Receive data taken in
D
1
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Transmitter side IC
D
T
Port
X
7
D
Stop bit
(3) Receiving is
Mitsubishi microcomputers
completed
M16C / 62 Group
(4) Data is
read
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