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MDP12BS17-SR-T

LCD Description

ModelMDP12BS17-SR-T (2142717-01)
Manufacturer
Recovered fromEpson WF-2530
LCD typepositive
Polarizer typereflective
Columns16 1)
Rows2
Char matrix
Driver ICmounted on LCD glass (CoG)
Backlight-
Arduino driver
Connectorpins
Num Pins8
Pin spacing0.07“

LCD1 Pinout

Arduino test rig 2)
Pin#IC pinLabelPincolour
1(cn1 pin 8)
2CS?(74VHC595 pin 4 (Qe))
3(cn1 pin6 via 100Ω)
4CLK?(cn1 pin5 via 220Ω), (74VHC595 pin 11 (clock) via 220Ω), (74VHC165 pin 2 (clock) via 220Ω)
5(cn1 pin2), (74VHC165 pin 9 (QH) via 3.3k)
6Vcc?
7GND
8capacitor to GND

JK33149A, 2142717-01 Board, CN1 pinout

Arduino test rig 3)
Pin#IC pinLabelPincolour
1Buzzer-
2(lcd pin5)
3GND
4Vcc?
5CLK?(lcd pin4 via 220Ω), (74VHC595 pin 11 (clock) via 220Ω), (74VHC165 pin 2 (clock) via 220Ω)
6(lcd pin3 via 100Ω)
7(74VHC595 pin 13 (output enable))
8(lcd pin1)
9(74VHC165 pin 1 (parallel load))
10SW1 (closes to gnd) (power button)



IC1, 74VHC165 (8bit parallel line/serial out shift register) is used for serializing the keyswitch selections,
IC2. 74VHC595 (8-Bit Shift Register with Output Latches) is used for decoding serial data to latched outputs to turn on status LEDs (Power, Wifi, ADF) and one LCD control line (chip select?)


Examples :

MDP12BS17-SR-T

1)
Probably a graphical display as characters appear to have proportional spacing
2) , 3)
reminder for my personal testing, not useful for anyone else!