I need to build up a circuit which Interface motorolla 68HC11A8 series processor with the 16*2 character lcd display . I am confusing about the interface circuit , becoz i don know is it can directly connect the 68HC11A8 output pin with the 16*2 character lcd display . The lcd display is JHD162A parallel input series .

Can anyone help me ??? Its urgent !! Thanks a lot......

 

Hi,

If you have the data sheet for the lcd display, it typically gives several examples of how to interface it with micriprocessors. Check that out and see what it says.

 

The datasheet has show that the connection of LCD display with the AT89C51 ....

Is it means that beside the AT89C51 , I cannot use other controller or PIC?????

 

I looked at the datasheet for the MC68HC11A8 and I see no reason why you should have any problem interfacing this micro to the LCD you have chosen. You can use the example in the datasheet for the AT89C51 as a guide in hooking up the LCD to the 68HC11.

hgmjr

 

Motorola processors use a different scheme for control signals than an 8051. If the LCD does not support the Motorola interface then you are out of luck. The common 44780 LCD display controller supports both the Motorola and the Intel modes. Read the datasheet carefully.

You should be able to identify an example with R/W-bar and E-clock as the control signals. There may also need to be an address strobe or its inversion if the databus is multiplexed.

The Intel control scheme uses ALE(Address Latch Enable), RD* and WR* as valid strobes, with a multiplexed address data bus.