m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 62

• 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
Transmission/reception
Figure 2.3.11. Example of wiring
2.3.4 Precautions for Serial I/O (in clock-synchronous serial I/O mode)
(1) With an external clock selected, and choosing the RTS function, the output level of the RTSi
pin goes to “L” when the data-receivable status becomes ready, which informs the transmis-
sion side that the reception has become ready. The output level of the RTSi pin goes to “H”
when reception starts. So if the RTSi pin is connected to the CTSi pin on the transmission
side, the circuit can transmission and reception data with consistent timing. With the internal
clock, the RTS function has no effect. Figure 2.3.11 shows an example of wiring.
Transmitter side IC
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_______
CTS
RxD
CLK
TxD
i
i
i
i
________
_______
RTS
RxD
CLK
TxD
Receiver side IC
i
i
i
i
2. Clock-Synchronous Serial I/O
________
________
________