m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 307

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

Fig. 11.4.13 Example of receive timing when transfer data length = 8 bits (when parity disabled, 1
SERIAL I/O
11.4 Clock asynchronous serial I/O (UART) mode
11-52
Receive enable
UARTi receive
Transfer clock
complete flag
BRGi’s count
request bit
interrupt
Receive
source
RxD
RTS
bit
stop bit and RTS function selected)
i
i
The above timing diagram applies when the following
conditions are satisfied:
At falling edge of start bit, the transfer
clock is generated and reception started.
Parity disabled
1 stop bit
RTS function selected
Start bit
Sampled “L”
7905 Group User’s Manual Rev.1.0
D
0
UARTi receive register
Received data taken in
D
1
D
7
UARTi receive buffer register’s reading out
UARTi receive buffer register
Cleared to “0” when interrupt request
is accepted or cleared to “0” by
software.
Stop bit