BG Micro LCD's and IDC pinouts

[tomtiki]

I have the 40x2 LCD from BG Micro (requires the negative voltage) and I have misplaced my spec sheet. It has a 16 pin IDC header already soldered on. Can I just make a straight IDC cable with 16 pin IDC connectors on each end? If not, can someone point me to a wiring diagram?

In the future, on those LCD's that already have IDC headers installed, how do I know whether it will be pin compatible with the 16 pin connector on the CORE board? Can I just crimp an IDC connector on each end? What if the display has a 14 pin connector?

Has anyone put together a list of pin for pin compatible displays (i.e. can be connected to the CORE module by a straight through 16 pin IDC cable)?

Thanks,

Tom

[stryd_one]

gday Tom:)

I have the 40x2 LCD from BG Micro (requires the negative voltage) and I have misplaced my spec sheet. It has a 16 pin IDC header already soldered on. Can I just make a straight IDC cable with 16 pin IDC connectors on each end?

Possibly, but one would need to see the datasheet to know.

If not, can someone point me to a wiring diagram?

http://www.ucapps.de/mbhp/mbhp_lcd.pdf or http://www.ucapps.de/mbhp_lcd.html for more... but again you need to know the pinouts of the LCD

In the future, on those LCD's that already have IDC headers installed, how do I know whether it will be pin compatible with the 16 pin connector on the CORE board?

That darned datasheet again  :-\

Can I just crimp an IDC connector on each end?

You could try, but if it's not wired right, you might well blow the thing up.

What if the display has a 14 pin connector?

If it was a 14 pin connect and a 16pin IDC then two of the wires would be left unused...which ones? Where did I put that datasheet? ;)

Has anyone put together a list of pin for pin compatible displays (i.e. can be connected to the CORE module by a straight through 16 pin IDC cable)?

Not yet, are you volunteering?  ;D

[tomtiki]

Actually, it didn't take me long to find the pinouts.

Guess I was just tired when I wrote that last post.

As for the wiring, unfortunately, a straight through cable is impossible.

So, I've got the J15 header on the core board and either a 14 or 16 pin IDC on the display.

I could use an IDC on the J15 side, but then...major wire splicing :

core      lcd

j15      display

-----------------

6            1    vss

8            2    vcc

10          3    vo

12          4    RS

14          5    R/W

16          6    E

15          7    DB0

13          8    DB1

11          9    DB2

9            10    DB3

7            11    DB4

5            12    DB5

3            13    DB6

1            14    DB7

----------------------

2            15    backlight +

4            16    backlight gnd

For the 40x2, the backlight wiring would be different.

So what is the best way to do the cable conversion?

Cut the cables and splice all the ends?

....perhaps I could wire an interface cable to convert the J15 wiring to be compatible with the IDC socket on the display?

I would have to make separate ones for 14 and 16 pin displays, but once the interface cable was plugged in, I now have

somewhat standard wiring. Best way to do this?

Any other ideas?

I can start a list somewhere.....

Thanks for your suggestions..

--tom

 

[stryd_one]

Best way to do this?

I think it comes down to your personal preference wieghed against the pro's and con's of each approach.