Page 1 of 1
LCD JHD19264A interface
Posted: Tue Feb 12, 2013 12:17 am
by YahooArchive
i have an lcd module that is 192x64 with a JHD19264A driver. it has a 20
pin connector. do you have an interface wiring diagram for the armmite
board.
thanks
phijoh
Re: LCD JHD19264A interface
Posted: Tue Feb 12, 2013 12:17 am
by YahooArchive
Have you got a spec or schematic that shows the connector to the LCD?
Re: LCD JHD19264A interface
Posted: Tue Feb 12, 2013 12:18 am
by YahooArchive
yes i have the instruction set and the interface diagram. i am able to get it
hard wired to the board correctly i am just new and unsure how to configure the
pins on the armmite to be the data, r/s,r/w, etc. any help would be greatly
appreciated
Re: LCD JHD19264A interface
Posted: Tue Feb 12, 2013 12:19 am
by YahooArchive
Looks like this is a byte wide interface (maybe it supports nibble too). How
about sending a link to the spec?
In the long run you WILL care about performance here, so to get that you'll want
to be able to do direct writes to a byte wide interface on the ARM. In the
ARMmite that limits you to P0.16-P0.23 (you will need pullup resistors --1K is
good-- on P0.18 and P0.19). The control lines can be connected to whatever pins
are convenient.
Just to get things going, you can set individual bits for control and data using
P0(x) = 1.
FOR I=0 to 7
P0(16+I) = databyte and (1<