LCD

[prolater]

Hi,

Would anyone out there have a PDF or specs/pinouts on an old laptop display,
It's out of an old Compaq lte series and is mono blue backlit is approx
210x115mm screen area and it is a branded Citizen with the part number
H6202H-BE.
It only has 14 pins in total and looks to be a similar setup as a HD44780,
have traced back and can account for 4 of the pins as contrast and
brightness.
The rest is unknown, I have spent a lot of time searching the net with no
success
Thanks in advance.

Prolater

 

[Franc Zabkar]

On Sun, 9 Jan 2005 00:10:58 +1100, "prolater" <prolater_@hotmail.com>
put finger to keyboard and composed:

Would anyone out there have a PDF or specs/pinouts on an old laptop display,
It's out of an old Compaq lte series and is mono blue backlit is approx
210x115mm screen area and it is a branded Citizen with the part number
H6202H-BE.
It only has 14 pins in total and looks to be a similar setup as a HD44780,
have traced back and can account for 4 of the pins as contrast and
brightness.

I can't help you with the exact module, but the G6201H is a 9.1" mono
CGA 640 x 200 display with a 14-pin interface that *may* be similar:
http://www.citizen-lcd.com/index.htm#old
http://www.citizen-lcd.com/g6201h.pdf

According to the datasheet, this module does not incorporate a
controller. It uses several MSM5299 and MSM5298 Segment and Common
drivers. The -BF version is blue CCFT backlit. Viewing area is 195 x
105mm. The Hxxxx modules appear to be special orders for particular
customers??? G64xxH mdules appear to be 640x480 mono VGA displays.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

 

[prolater]

Franc,
Thanks for that, the only thing that concerns me is that pins 7 thru 14
appear to be data lines driven by a 74HC244 but according to the G6201H
specs it only uses 4 data lines D0 to D3 (pins11-14), unsure on this but
that's what it seems like please correct me if wrong which I hope I am as
that would make it easier being able to use the G6201H spec sheet.

Thanks Prolater


"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:dcf0u0hkmm0hit1cv8joom96rrij5j0pk6@4ax.com...

On Sun, 9 Jan 2005 00:10:58 +1100, "prolater" <prolater_@hotmail.com
put finger to keyboard and composed:

Would anyone out there have a PDF or specs/pinouts on an old laptop
display,
It's out of an old Compaq lte series and is mono blue backlit is approx
210x115mm screen area and it is a branded Citizen with the part number
H6202H-BE.
It only has 14 pins in total and looks to be a similar setup as a HD44780,
have traced back and can account for 4 of the pins as contrast and
brightness.

I can't help you with the exact module, but the G6201H is a 9.1" mono
CGA 640 x 200 display with a 14-pin interface that *may* be similar:
http://www.citizen-lcd.com/index.htm#old
http://www.citizen-lcd.com/g6201h.pdf

According to the datasheet, this module does not incorporate a
controller. It uses several MSM5299 and MSM5298 Segment and Common
drivers. The -BF version is blue CCFT backlit. Viewing area is 195 x
105mm. The Hxxxx modules appear to be special orders for particular
customers??? G64xxH mdules appear to be 640x480 mono VGA displays.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

 

[Franc Zabkar]

On Mon, 10 Jan 2005 04:07:29 +1100, "prolater" <prolater_@hotmail.com>
put finger to keyboard and composed:

Franc,
Thanks for that, the only thing that concerns me is that pins 7 thru 14
appear to be data lines driven by a 74HC244 but according to the G6201H
specs it only uses 4 data lines D0 to D3 (pins11-14), unsure on this but
that's what it seems like please correct me if wrong which I hope I am as
that would make it easier being able to use the G6201H spec sheet.

Thanks Prolater

I'm actually in the process of learning about LCD modules at the
moment, so I'd say your guess would be better than mine. It may help
if you could identify the IC(s) used in your module, but I suspect the
silicon is under an epoxy blob. :-( Alternatively, if you still have
the laptop, I'd look at the interface circuitry on the motherboard for
clues. If the laptop still works, I'd use a scope.

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:dcf0u0hkmm0hit1cv8joom96rrij5j0pk6@4ax.com...
On Sun, 9 Jan 2005 00:10:58 +1100, "prolater" <prolater_@hotmail.com
put finger to keyboard and composed:

Would anyone out there have a PDF or specs/pinouts on an old laptop
display,
It's out of an old Compaq lte series and is mono blue backlit is approx
210x115mm screen area and it is a branded Citizen with the part number
H6202H-BE.
It only has 14 pins in total and looks to be a similar setup as a HD44780,
have traced back and can account for 4 of the pins as contrast and
brightness.

I can't help you with the exact module, but the G6201H is a 9.1" mono
CGA 640 x 200 display with a 14-pin interface that *may* be similar:
http://www.citizen-lcd.com/index.htm#old
http://www.citizen-lcd.com/g6201h.pdf

According to the datasheet, this module does not incorporate a
controller. It uses several MSM5299 and MSM5298 Segment and Common
drivers. The -BF version is blue CCFT backlit. Viewing area is 195 x
105mm. The Hxxxx modules appear to be special orders for particular
customers??? G64xxH mdules appear to be 640x480 mono VGA displays.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

 

[prolater]

Actually I do have the laptop so to speak, it is in bits lol but still
works fine when I hook it all up. I have traced all the pins back to every
point of origin except for pins 5 and 6, number 6 I believe to be NC and 5
is a magic pin has no point of origin but magically decides to be +5v when
switched on, so I suspect it is returning a voltage via the display (unknown
and unsure). Yes the IC's are under a pile of black blob which is of no
assistance at all.
I have looked at many other specs that incorporate a hc244 in the display
circuit hoping for some clues but not much luck so far but there is a couple
of possibilities to ponder.
Anyways thanks for your help and good luck with your projects in the future.

Prolater

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

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:dr63u0pvvlm4u6tis1cueegn3g6b51jdgq@4ax.com...

On Mon, 10 Jan 2005 04:07:29 +1100, "prolater" <prolater_@hotmail.com
put finger to keyboard and composed:

Franc,
Thanks for that, the only thing that concerns me is that pins 7 thru 14
appear to be data lines driven by a 74HC244 but according to the G6201H
specs it only uses 4 data lines D0 to D3 (pins11-14), unsure on this but
that's what it seems like please correct me if wrong which I hope I am as
that would make it easier being able to use the G6201H spec sheet.

Thanks Prolater

I'm actually in the process of learning about LCD modules at the
moment, so I'd say your guess would be better than mine. It may help
if you could identify the IC(s) used in your module, but I suspect the
silicon is under an epoxy blob. :-( Alternatively, if you still have
the laptop, I'd look at the interface circuitry on the motherboard for
clues. If the laptop still works, I'd use a scope.

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:dcf0u0hkmm0hit1cv8joom96rrij5j0pk6@4ax.com...
On Sun, 9 Jan 2005 00:10:58 +1100, "prolater" <prolater_@hotmail.com
put finger to keyboard and composed:

Would anyone out there have a PDF or specs/pinouts on an old laptop
display,
It's out of an old Compaq lte series and is mono blue backlit is approx
210x115mm screen area and it is a branded Citizen with the part number
H6202H-BE.
It only has 14 pins in total and looks to be a similar setup as a
HD44780,
have traced back and can account for 4 of the pins as contrast and
brightness.

I can't help you with the exact module, but the G6201H is a 9.1" mono
CGA 640 x 200 display with a 14-pin interface that *may* be similar:
http://www.citizen-lcd.com/index.htm#old
http://www.citizen-lcd.com/g6201h.pdf

According to the datasheet, this module does not incorporate a
controller. It uses several MSM5299 and MSM5298 Segment and Common
drivers. The -BF version is blue CCFT backlit. Viewing area is 195 x
105mm. The Hxxxx modules appear to be special orders for particular
customers??? G64xxH mdules appear to be 640x480 mono VGA displays.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.



- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

 

[Franc Zabkar]

On Tue, 11 Jan 2005 04:15:34 +1100, "prolater" <prolater_@hotmail.com>
put finger to keyboard and composed:

Actually I do have the laptop so to speak, it is in bits lol but still
works fine when I hook it all up. I have traced all the pins back to every
point of origin except for pins 5 and 6, number 6 I believe to be NC ...

That correlates with the NC pin of the G6201H panel.

and 5
is a magic pin has no point of origin but magically decides to be +5v when
switched on, so I suspect it is returning a voltage via the display (unknown
and unsure).

Could it be the DISP OFF* pin (pin 5) of the G6201H panel? This signal
may have a pullup resistor on the panel so that the display defaults
to being on in the absence of an input.

Yes the IC's are under a pile of black blob which is of no
assistance at all.
I have looked at many other specs that incorporate a hc244 in the display
circuit hoping for some clues but not much luck so far but there is a couple
of possibilities to ponder.

The '244 is a common line driver with hysteresis on the inputs. IMHO,
the presence of the '244 does not mandate a D0-7 data bus
configuration. The pinout of the G6201H panel may still be the correct
one. Do all the '244 input pins connect to 8 sequential pins of some
chip on the mainboard? If so, then that would support the idea of an
8-bit data bus. I'd try some test patterns involving vertical or
horizontal bars, a single vertical or horizontal line, a bright white
screen, or a blank screen. Watch the data lines with a scope.

Anyways thanks for your help and good luck with your projects in the future.

Prolater

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

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:dr63u0pvvlm4u6tis1cueegn3g6b51jdgq@4ax.com...
On Mon, 10 Jan 2005 04:07:29 +1100, "prolater" <prolater_@hotmail.com
put finger to keyboard and composed:

Franc,
Thanks for that, the only thing that concerns me is that pins 7 thru 14
appear to be data lines driven by a 74HC244 but according to the G6201H
specs it only uses 4 data lines D0 to D3 (pins11-14), unsure on this but
that's what it seems like please correct me if wrong which I hope I am as
that would make it easier being able to use the G6201H spec sheet.

Thanks Prolater

I'm actually in the process of learning about LCD modules at the
moment, so I'd say your guess would be better than mine. It may help
if you could identify the IC(s) used in your module, but I suspect the
silicon is under an epoxy blob. :-( Alternatively, if you still have
the laptop, I'd look at the interface circuitry on the motherboard for
clues. If the laptop still works, I'd use a scope.

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:dcf0u0hkmm0hit1cv8joom96rrij5j0pk6@4ax.com...
On Sun, 9 Jan 2005 00:10:58 +1100, "prolater" <prolater_@hotmail.com
put finger to keyboard and composed:

Would anyone out there have a PDF or specs/pinouts on an old laptop
display,
It's out of an old Compaq lte series and is mono blue backlit is approx
210x115mm screen area and it is a branded Citizen with the part number
H6202H-BE.
It only has 14 pins in total and looks to be a similar setup as a
HD44780,
have traced back and can account for 4 of the pins as contrast and
brightness.

I can't help you with the exact module, but the G6201H is a 9.1" mono
CGA 640 x 200 display with a 14-pin interface that *may* be similar:
http://www.citizen-lcd.com/index.htm#old
http://www.citizen-lcd.com/g6201h.pdf

According to the datasheet, this module does not incorporate a
controller. It uses several MSM5299 and MSM5298 Segment and Common
drivers. The -BF version is blue CCFT backlit. Viewing area is 195 x
105mm. The Hxxxx modules appear to be special orders for particular
customers??? G64xxH mdules appear to be 640x480 mono VGA displays.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.



- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

 

[prolater]

Franc,

Ok assuming all is the same as the G6201H which is looking more like the
case.
What do you think would be the best way to connect this to a PC , via the
serial or parallel port? and what method would you consider to be of a sound
nature, i.e. as in connections and circuitry etc.
I ask this as I do not want to damage this in any way as it looks like it
will be a really nice display screen.

Prolater

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
newsvr6u0p96jv168us8jhfqopfh87oluvlr7@4ax.com...

On Tue, 11 Jan 2005 04:15:34 +1100, "prolater" <prolater_@hotmail.com
put finger to keyboard and composed:

Actually I do have the laptop so to speak, it is in bits lol but still
works fine when I hook it all up. I have traced all the pins back to every
point of origin except for pins 5 and 6, number 6 I believe to be NC ...

That correlates with the NC pin of the G6201H panel.

and 5
is a magic pin has no point of origin but magically decides to be +5v when
switched on, so I suspect it is returning a voltage via the display
(unknown
and unsure).

Could it be the DISP OFF* pin (pin 5) of the G6201H panel? This signal
may have a pullup resistor on the panel so that the display defaults
to being on in the absence of an input.

Yes the IC's are under a pile of black blob which is of no
assistance at all.
I have looked at many other specs that incorporate a hc244 in the display
circuit hoping for some clues but not much luck so far but there is a
couple
of possibilities to ponder.

The '244 is a common line driver with hysteresis on the inputs. IMHO,
the presence of the '244 does not mandate a D0-7 data bus
configuration. The pinout of the G6201H panel may still be the correct
one. Do all the '244 input pins connect to 8 sequential pins of some
chip on the mainboard? If so, then that would support the idea of an
8-bit data bus. I'd try some test patterns involving vertical or
horizontal bars, a single vertical or horizontal line, a bright white
screen, or a blank screen. Watch the data lines with a scope.

Anyways thanks for your help and good luck with your projects in the
future.

Prolater

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

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:dr63u0pvvlm4u6tis1cueegn3g6b51jdgq@4ax.com...
On Mon, 10 Jan 2005 04:07:29 +1100, "prolater" <prolater_@hotmail.com
put finger to keyboard and composed:

Franc,
Thanks for that, the only thing that concerns me is that pins 7 thru 14
appear to be data lines driven by a 74HC244 but according to the G6201H
specs it only uses 4 data lines D0 to D3 (pins11-14), unsure on this but
that's what it seems like please correct me if wrong which I hope I am
as
that would make it easier being able to use the G6201H spec sheet.

Thanks Prolater

I'm actually in the process of learning about LCD modules at the
moment, so I'd say your guess would be better than mine. It may help
if you could identify the IC(s) used in your module, but I suspect the
silicon is under an epoxy blob. :-( Alternatively, if you still have
the laptop, I'd look at the interface circuitry on the motherboard for
clues. If the laptop still works, I'd use a scope.

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:dcf0u0hkmm0hit1cv8joom96rrij5j0pk6@4ax.com...
On Sun, 9 Jan 2005 00:10:58 +1100, "prolater" <prolater_@hotmail.com
put finger to keyboard and composed:

Would anyone out there have a PDF or specs/pinouts on an old laptop
display,
It's out of an old Compaq lte series and is mono blue backlit is
approx
210x115mm screen area and it is a branded Citizen with the part number
H6202H-BE.
It only has 14 pins in total and looks to be a similar setup as a
HD44780,
have traced back and can account for 4 of the pins as contrast and
brightness.

I can't help you with the exact module, but the G6201H is a 9.1" mono
CGA 640 x 200 display with a 14-pin interface that *may* be similar:
http://www.citizen-lcd.com/index.htm#old
http://www.citizen-lcd.com/g6201h.pdf

According to the datasheet, this module does not incorporate a
controller. It uses several MSM5299 and MSM5298 Segment and Common
drivers. The -BF version is blue CCFT backlit. Viewing area is 195 x
105mm. The Hxxxx modules appear to be special orders for particular
customers??? G64xxH mdules appear to be 640x480 mono VGA displays.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.



- Franc Zabkar
--
Please remove one 's' from my address when replying by email.



- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

 

[Franc Zabkar]

On Thu, 13 Jan 2005 04:20:05 +1100, "prolater" <prolater_@hotmail.com>
put finger to keyboard and composed:

Franc,

Ok assuming all is the same as the G6201H which is looking more like the
case.
What do you think would be the best way to connect this to a PC , via the
serial or parallel port?

I would think that neither of these methods would provide tolerable
display refresh speeds. In any case, it looks like you have to be very
careful with timing considerations to avoid putting DC on the display.
If the module is similar to a G6201H, then you will need your own
controller. I'd go for a USB solution with an embedded PIC or Atmel
uC. You will also need a 30VDC (?) supply for the LCD.

and what method would you consider to be of a sound
nature, i.e. as in connections and circuitry etc.
I ask this as I do not want to damage this in any way as it looks like it
will be a really nice display screen.

Prolater

- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

 

[prolater]

Thanks franc for that input, I will shh! for awhile now and ponder the
situation and yes I do believe that a USB scenario maybe the better one of
all, it's just there's so much new knowledge to take onboard, I have
actually just pondered the idea of leaving it a small PC (which it is) and
just interface it to my PC and let the serial or parallel ports do the work
and just write some software to do the job that I require.
anyway will let ya know how I go and thanks for your input.

prolater


"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:2vtau05ruaga6e14mekaoldqmuuhmh2utb@4ax.com...

On Thu, 13 Jan 2005 04:20:05 +1100, "prolater" <prolater_@hotmail.com
put finger to keyboard and composed:

Franc,

Ok assuming all is the same as the G6201H which is looking more like the
case.
What do you think would be the best way to connect this to a PC , via the
serial or parallel port?

I would think that neither of these methods would provide tolerable
display refresh speeds. In any case, it looks like you have to be very
careful with timing considerations to avoid putting DC on the display.
If the module is similar to a G6201H, then you will need your own
controller. I'd go for a USB solution with an embedded PIC or Atmel
uC. You will also need a 30VDC (?) supply for the LCD.

and what method would you consider to be of a sound
nature, i.e. as in connections and circuitry etc.
I ask this as I do not want to damage this in any way as it looks like it
will be a really nice display screen.

Prolater


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.