RTS or DTR on UART1

1) There are no RTS or DTR on the MCB2300 board. The connectors only have RX and TX. The two extra signals on COM0 have the wrong direction - they are there to allow a PC so reset the LPC23xx and to have it enter ISP mode.

2) Does your solution requires power from two signals to operate? If not, and if you don't need both serial ports on the board, then you could take the TX signal from the other serial port (on the outside of the MAX5763) to drive one of these "power" lines. You can switch the signal on or off by configuring the TX signal on the processor as a GPIO output pin.

However, you may need need more power than a single signal can supply to feed your external equipment, in which case you either need to add another MAX232 or similar or build your own charge pump.

Is this a school assignment, or are you using the MCB2300 for prototyping of a real product?

1) There are no RTS or DTR on the MCB2300 board. The connectors only have RX and TX. The two extra signals on COM0 have the wrong direction - they are there to allow a PC so reset the LPC23xx and to have it enter ISP mode.

2) Does your solution requires power from two signals to operate? If not, and if you don't need both serial ports on the board, then you could take the TX signal from the other serial port (on the outside of the MAX5763) to drive one of these "power" lines. You can switch the signal on or off by configuring the TX signal on the processor as a GPIO output pin.

However, you may need need more power than a single signal can supply to feed your external equipment, in which case you either need to add another MAX232 or similar or build your own charge pump.

Is this a school assignment, or are you using the MCB2300 for prototyping of a real product?

I use MCB2300 for study but I hope in future for the job :-)
I have bought this board for understand the world of the microcontroller and
I will want to build an easy application for prototipe device of my friend

I study Compuert Science

Thanks a lot