m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 78

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 2.4.10. Operation timing of reception in UART mode
Example of wiring
Example of operation
Receive enable
bit
RTS
BRGi's count
source
RxD
Transfer clock
Receive
complete flag
Receive interrupt
request bit
i
i
“1”
“1”
“L”
“1”
“0”
“0”
“0”
“H”
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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”
RTSi
R
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
Becomes “L” by reading the receive buffer
D
1
Transmitter side IC
D
T
Port
X
7
D
Stop bit
(3) Receiving is
completed
(4) Data is
read
2. UART