M16C80 Datasheet, PDF (334/358 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/80 SERIES

M16C/80 Group
32. Standard serial I/O mode
Baud Rate 115200
This command changes baud rate to 115,200 bps. Execute it as follows.
(1) Transfer the "B416" command code with the 1st byte.
(2) After the "B416" check code is output with the 2nd byte, change the baud rate to 19,200 bps.
RxD1
(M16C reception data)
TxD1
(M16C transmit data)
B416
B416
Figure 32.41 Timing of baud rate 115200
Example Circuit Application for The Standard Serial I/O Mode 2
The below figure shows a circuit application for the standard serial I/O mode 2.
Monitor output
Data input
Data output
CLK1
RTS1(BUSY)
RXD1
TXD1
M16C/80 Flash
memory version
CNVss
NMI
P50(CE)
P55(EPM)
(1) In this example, the microprocessor mode and standard serial I/O
mode are switched via a switch.
Figure 32.42 Example circuit application for the standard serial I/O mode 2
Rev.1.00 Aug. 02, 2005 ^{Page 323} of 329
REJ09B0187-0100