Hitachi LCD - anyone recognise the pinout?
- From: Philip Pemberton <philpem@xxxxxxxxxxxxx>
- Date: Fri, 07 Apr 2006 23:15:45 +0100
Hi,
I'm trying to figure out how to connect a Hitachi SP21H002-Z1A LCD panel to
my LCD controller. Thus far, I haven't been able to track down a datasheet,
primarily because the folks at Hitachi Displays seem to be incapable of
returning phone calls or replying to emails... Even the UK distributor has
been unable to get them to respond... If anyone has a datasheet for this
display (or schematics for something that uses it), PLEASE contact me - at
this point any info would be useful.
The connector is a 30-pin 0.5mm pitch flexicable. Pins 1, 3, 5, 7, 9, 11,
13, 15, 17, 19, 21, 22, 24, 26, 28 and 30 are all grounds -- they all connect
to the metal framework and to each other. I've also worked out (based on
voltage-drop measurements) that pins 2, 4, 6, 8, 10, 12, 14 and 16 are
probably inputs of some description and that 18 seems to be the display
contrast control input (or maybe another power supply) and 20 seems to be the
Vcc input (all the input pins have internal diodes running to it and GND).
I've also figured out that pins 23, 25, 27 and 29 go to the touchscreen
overlay - a resistive XY touchscreen.
What I can't figure out is which input does what. Has anyone seen any
pinouts that follow the general scheme I've mentioned?
All I know about the display is that it's a 640x240 monochrome display with
a CCFL backlight, and that it's got a resistive touchscreen overlay. I've had
it in pieces, but all the driver ICs are chip-on-flexprint mounted, and the
flexprint appears to be heat-sealed to the LCD glass.
If anyone has a datasheet for this display or one that appears to have
similar pinouts, please contact me. Even if you can only offer a typed
version of the pinouts and not a scan of the datasheet, that would still be
very useful to me.
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"philpem.castlecore.com" if you're sending an attachment larger than 1MB or
so.
Thanks.
--
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