Has somebody got this LCD working? -- HLM8070

rainer · **Posted:** 18 Jul 2010 16:56

Hello,

I got some LCD displays from Pollin for very low money. What I didn't recognize when I ordered, is the fact that this display seems to be not compatible with industry standard. The built in controller is a M50530 Controller.

Here a link to it: http://www.pollin.de/shop/dt/MjE2OTc4OTk-/Bauelemente/Aktiv/Displays/LCD_Modul_HLM8070.html

As this display is really cheap and 16x4 chars (well the pins are really strange arranged in thi slight angle), I would like to use it, but until now I had no success. Any help is welcome.

Rainer

coldharbor · **Posted:** 20 Jul 2010 07:38

You are correct, the The Mits m50530 LCD Driver is not compatible with the Hitachi 44780 design.
Datasheet for the driver chip: http://lcd-linux.sourceforge.net/pdfdocs/M50530.pdf
If you do a google search on 'm50530 basic stamp' you should find the bus layout and the software interface info that you could translate into pascal fairly easily.
Also search on 'm50530 lcdhype'

Likely correct

Code: Select all

Mits 50530 16-pin i-bus (other interface arrangements exist)
Pin    ID     Function
1      FGND?  Frame GROUND (?)
2      DB0    Data Bit 0 [8-bit mode]
3      DB1    Data Bit 1 [8-bit mode]
4      DB2    Data Bit 2 [8-bit mode]
5      DB3    Data Bit 3 [8-bit mode]
6      DB4    Data Bit 4 [8,4-bit mode]
7      DB5    Data Bit 5 [8,4-bit mode]
8      DB6    Data Bit 6 [8,4-bit mode]
9      DB7    Data Bit 7 [8,4-bit mode]
10     EX     Instruction Start (aka Execute, Enable)
11     R/W    Read/Write
12     C2     I/O Control 2
13     C1     I/O Control 1
14     VCon   Contrast Supply 0-10V (5-12?)V
15     Vdd    +5V Logic Supply
16     GND    GROUND 

mikroElektronika

Has somebody got this LCD working? -- HLM8070

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