I'm looking for an integrated circuit that can connect a lpc17xx (microcontroller) to the serial port on the back of a standard computer. The lpc17xx has a UART controller with 8 pins.
RXD
TXD
CTS
DCD
DSR
DTR
RI
RTS
I'd like to use them all. I figure if NXP decided to implement all those pins, not just RX and TX then they should be useful…anybody know why? Flow control?
The microcontroller runs at 3.3v volts and I wasn't able to find a max232 type part that has 8 channels at 3.3v.
I suppose I could just use RX and TX if there is really no difference, but if nothing else my circuit could look way cooler with more wires 😛
thanks.
EDIT:
Are they called drivers or transceivers?
Best Answer
If you wish to use all eight signals, you can use MAX3243E. It is quite similar to MAX232 but it gives you 5 receivers (CD, RXD, DSR, CTS, RI) and 3 drivers (TXD, DTR, RTS).