mstechca
New Member
I am a little lost.
All I wanted to do is perform a ridiculously simple program which outputs some text on the LCD.
I have connected the LCD to port 1 on the at89c2051 chip.
Where on the chip should the LCD's R/S, and E go? and why?
Also, I used a simple common collector amplifier to convert 12V output from the serial port to < 5V so that nothing blows up.
I am using an external oscillator about 900Khz to drive the at89c2051, because I don't have a crystal.
The reset pin is always low.
I connected the serial port data output to the at89c2051's serial data input which to me seems logical.
The 2KB flash rom is empty, and I dont think that should have anything to do with it because my PC is sending the instructions.
Do I have to fine tune the clocks to use the serial port?
All I wanted to do is perform a ridiculously simple program which outputs some text on the LCD.
I have connected the LCD to port 1 on the at89c2051 chip.
Where on the chip should the LCD's R/S, and E go? and why?
Also, I used a simple common collector amplifier to convert 12V output from the serial port to < 5V so that nothing blows up.
I am using an external oscillator about 900Khz to drive the at89c2051, because I don't have a crystal.
The reset pin is always low.
I connected the serial port data output to the at89c2051's serial data input which to me seems logical.
The 2KB flash rom is empty, and I dont think that should have anything to do with it because my PC is sending the instructions.
Do I have to fine tune the clocks to use the serial port?