My Projects

LCD module data

Numeric

AlphaNumeric

Graphic

NG-87243-001

LCD Description
ModelNG-87243-001
ManufacturerSamsung?
Recovered fromNec DTR-16D-1A
Board IDsNG-87243-001, NG-84458-001
Alt. board IDsA50-002005-003, MBCF24302Z04. A50-002005-002, MBC24302Z02 1)
LCD typepositive
Polarizer typereflective
Columns24
Rows3
Char matrix5×7
Driver ICHitachi HD44780 compatible (covered in epoxy)
Backlight-
Arduino driverLiquidCrystal_24x3.h2)
ConnectorPCB flex
Num Pins16
Pin spacing0.05”
Module size98 x 37 mm
Measured Connector pin-out Arduino test rig
Pin#Main boardLCD boardLCD onLCD offIC pinLabelPincolour
1 Green LED K1.7V0.0V
2 LED A common0.8V0.0V
3 Red LED K1.9V0.0V
4 2.9V0.1V RS
5 0.4V0.1V E
6 164k0.7V0.1V D0
7 1.4M0.6V0.2V D1
8 0.6V3.3V D2
9 0.3V3.3V D3
103.45k120k3.3V3.3V Vcc
11GNDGND0.0V0.0V GND
12 100k1.9V1.7V Contrast
13NC120k3.3V3.3V
14NC 0.0V0.0V
15GNDGND0.0V0.0V 3)
16NC 0.0V0.0V

The connector pins aren't labeled on the LCD module, I have used the numbering on the phone board. This corresponds to viewing the LCD module from the back, with the flex connector at the top and numbering the pins 1 to 16 from left to right.

In the phones it seems to operate with a contrast voltage of 1.9V, but I had to supply 2.3V on my test rig, might be because supply voltage was only 3V rather than 3.3V.

The LCD modules can be swapped out from the phones quite simply, and are interchangable between the DTR-16D and DTR-8D and possibly other models. See https://www.commgear.com/Documents/LCD%20Replacement-Instructions.pdf.

Datasheets

Examples :

NG87243 front NG87243 back MBCF24302Z04 back MBCF24302Z04 inside front NG87243 overview with board NG87243 overview with board NG87243 overview with board

NG87243 connectorNG87243 connector

NG87243 adapter cable endNG87243 adapter PCB end

NG87243 adapter topNG87243 adapter bottom

NG87243 cable topNG87243 cable bottom

NG87243 character set
NG87243 character set
NG87243 character set
NG87243 character set
NG87243 character set
NG87243 character set
NG87243 character set

NG87243 examples

NG87243 pixel layout

1) in a DTR-8D-1A
2) this is a standard HD44780 library, but the row start addresses are 0x00,0x20,0x40,0x60
3) hard wired on LCD board to GND, perhaps just indicates LCD module is present
4) this file has an extra data glitch in it that fools sigrok into getting the nibbles aligned so the 2 nibble codes are easier to decode with the 'parallel' filter