Well, I didn't find much on the LM213 either, but I did find an app note from
Hitachi regarding their HD61830 based LCD's, it's here:

http://www.hitachi-eu.com/hel/ecg/products/displays/pdf/app028.pdf

Maybe this will provide a little bit of info.

Hope this helps,

Tim Hamel

In a message dated 1/7/00 5:18:49 PM Pacific Standard Time,
musica@UKONLINE.CO.UK writes:

> While we're on the subject of LCDs, I'm in the early stages of designing
>  a data acquisition/telemetry system using a 16F877. The prototype is
>  breadboarded and ready to load and I've written and simulated the main
>  loop and A/D business and started on the LCD code (using MPLAB. We'll
>  also be using MPIDE, but I haven't got that far yet.).
>
>  Since the company hasn't decided what size/type of LCD to use yet I've
>  dug out a module from the oddments box to use on the proof-of-concept
>  prototype and this is where the problem begins.
>
>  It's a Hitachi LM213XB and I can't find any info on it anywhere. The
>  Hitachi site drew a blank as did several search engines. The data that
>  came with it is just the HD61830 data sheet and the pinout. It's 40x8 in
>  character mode apparently but there's no info on what the duty cycle
>  needs to be nor what RAM and/or ROM is on the board nor the size in
>  graphics mode.
>
>  For the prototype I'll be using character mode to display raw figures
>  but the production model needs something pretty. I'd like to display the
>  data (5 channels, 4 fairly fixed DC levels and one audio checked for
>  peak level) as horizontal bar graphs with the numeric value inset. Is it
>  optimistic to try achieve this in real-ish time with an 877? I can get a
>  reasonable budget for the display so it'd be good to have a nice graphic
>  feel. Anyone have recommendations for LCD modules that might be suitable
>  for the production model?
>
>  Veering sharply back on-topic, I should add this is my first 877 project
>  and my first really major PIC coding exercise having only done fairly
>  simple applications so far, so if anyone has any hints please speak up.
>  Any warning of unexpected things to look out for when A/D, Rs232/485 and
>  LCDs are being used together would be welcome too.
>
>
>  Andy Howard
>  England, bottom-right corner.
>  music@soon.com
>
>