ganesh90
Newbie level 1
memory mapped lcd
I am using LM032L with 89C55 microcontroller.
I have to interface the lcd without using any of the i/o ports of the 89C55.
I have to interface the lcd at a memory address (say F000). [/b]
I am facing a problem in generating the Enable, R/W, signals of the LCD.
I connected R/W to RD' of 89c55 and Enable to memory decoding circuit.
The simulation in Proteus is saying that the 'time-step is too small'.
Please help!!!
I am using LM032L with 89C55 microcontroller.
I have to interface the lcd without using any of the i/o ports of the 89C55.
I have to interface the lcd at a memory address (say F000). [/b]
I am facing a problem in generating the Enable, R/W, signals of the LCD.
I connected R/W to RD' of 89c55 and Enable to memory decoding circuit.
The simulation in Proteus is saying that the 'time-step is too small'.
Please help!!!