Usb-To-Serial Converter Reset Header - Renesas RL78/G24 User Manual

RL78/G24 Fast Prototyping Board 5. User Circuits
5.13

USB-to-Serial Converter Reset Header

The USB-to-serial converter is placed in the forced reset state by short-circuiting its reset header (J14). If the
evaluation MCU alone is to operate without the use of the RL78 COM port debug tool, place the USB-to-serial
converter in the reset state. This allows the use of P50 (RxD0) and P51 (TxD0) as facilities other than for a
UART, such as port pins, while a reset is being applied to the USB-to-serial converter. Even if P50 and P51
are used as facilities other than for a UART, such as port pins, the board must be connected to the host PC by
using the USB cable. Figure 5-4 shows the position of the USB-to-serial converter reset header.
USB-to-serial
converter reset
header (J14)
Figure 5-4 Position of the USB-to-Serial Converter Reset Header (Top Side)
R20UT5091EJ0100 Rev. 1.00 Page 21 of 36
Apr.16.23