LCD Pinouts

[jada88]

I have some 2x16 LCD's marked UC-16207-GNAR5-1 made by Samsung, I need to know what the pinouts are as I have burnt one out on connecting to my circuit. I cannot seem to find any data on them on line.

jada88

 

[Ian Rogers]

Most of these displays are standard... I have seen several different combinations, but all the same order.

Most are 1 through 16

1 Vss
2 Vdd
3 Contrast
4 RS
5 RW
6 E
7 D0
~
14 D7
15 Anode (led)
16 Cathode(led)

Some are 14 to 1 then 15 and 16

14 D7
~
7 D0
6 E
5 RW
4 RS
3 Contrast
2 Vdd
1 Vss
15 Anode
16 Cathode

But most keep the same order....

 

[jada88]

Most of these displays are standard... I have seen several different combinations, but all the same order.

Most are 1 through 16

1 Vss
2 Vdd
3 Contrast
4 RS
5 RW
6 E
7 D0
~
14 D7
15 Anode (led)
16 Cathode(led)

Some are 14 to 1 then 15 and 16

14 D7
~
7 D0
6 E
5 RW
4 RS
3 Contrast
2 Vdd
1 Vss
15 Anode
16 Cathode

But most keep the same order....

Hi Ian Rogers
Many thanks for your quick reply. The only problem is that there is a + sign on pin one and in the corners. Pins 1,2,13 & 14 are marked. Would a photo help?

jada88

 

[JimB]

Would a photo help?

A photo always helps.
Most of the LCD modules are a variation on a common theme and relativily easy to work out what is what.

JimB

 

[Ian Rogers]

1 to 14 are as described in my earlier post... + and - are the LED connections.. Sometimes these are separate to the others..

 

[jada88]

1 to 14 are as described in my earlier post... + and - are the LED connections.. Sometimes these are separate to the others..

Thanks JimB and Ian
I have now taken a photos

 

[jada88]

Thanks JimB and Ian
I have now taken a photos

As you can see it appears that pin one is connected to + on the PCB.

jada88

 

[Ian Rogers]

Yes! It still applies.. 1 through 14 are as I said.. The anode and cathode are on the other side of the unit....

No!! wait a mo..... The + seems to be in all four corners... That doesn't seem right..

The negative terminal (pin 1) is connected to them.. Wait and I'll investigate.

 

[Ian Rogers]

I have found the chip that the unit uses... The segment driver KS0065B... Uses the KS0066U

Here is the pinout... you can then bell it through..

It looks like the data port is in the right place..

 

[jada88]

I have found the chip that the unit uses... The segment driver KS0065B... Uses the KS0066U

Here is the pinout... you can then bell it through..

It looks like the data port is in the right place..

Thanks again Ian
So pin 33 on the KS0066U I trace to the connection pin +5V and pin 23 on chip I trace to connection pin GND to power up the LCD. The other chip pins I can trace to RS,R/W,E,DB0 to DB7 etc to there respective connection pins.

jada88

 

[Ian Rogers]

They SHOULD correspond to the normal pin out....

 

[JimB]

Just looking at the pictures, pin1 of the connector is wired to the mounting points.
Pin1 should be 0v (Vss) in a conventional LCD.
I think that the "+" symbols on the circuit board are just put there to create confusion. (They have succeeded!)

JimB

 

[jada88]

Just looking at the pictures, pin1 of the connector is wired to the mounting points.
Pin1 should be 0v (Vss) in a conventional LCD.
I think that the "+" symbols on the circuit board are just put there to create confusion. (They have succeeded!)

JimB

Many thanks to JimB and Ian for your advice. The chip is a KS0065B and I traced the pins to the connecting pads, and yes pin 1 is GND and pin 2 +5V. All now seems to be well.

jada88

 

[JimB]

All now seems to be well.

Another success story!
Thats what we like to hear.

JimB