R8C/3MK Group
USB-to-Serial Communication Conversion Demo Board
R0K5R8C3MDU30BR Instruction Manual
R01AN1051EJ0100 Rev.1.00
Page 13 of 38
Mar 21, 2012
7.2
Header Pin Attachment
Attach the right angle section of the bundled header pin (FFC-8LBMEP1B, Honda Tsushin Kogyo) to the
holes (J3) on the left edge of the board as shown in
Figure 5. Figure 6shows an attachment example. A user-
provided header pin can also be attached to J3; the required dimensions are 2.54-mm pitch, 2-row, 8-pin
header pin.
Figure 5 J3 Header Pin Attachment Position
Figure 6 Example of Bundled Header Pin Attached to J3
7.3
External Serial Communications Device Connection
The demo board uses J1, J2, and J3 as connectors for external serial communications devices.
Figure 8 show the positioning of the signal lines and power supply/GND connected through for J1, J2 and J3.
Table 4 shows the relation of the connector pin No. and the MCU functions. Refer to “Appendix 1 Circuit
Diagram” for more details about the MCU wiring.
Power and Ground terminals are also on the rear surface of this product.
They should Not be in contact with a conductive material directly.
