LG LAC2900N Service Manual page 40

7-3. PIN DESCRIPTION
Pin No. Pin Name
1 ~ 12 SEG1/ P1 ~
SEG12/ P12
13 ~ 51 SEG13~SEG51
52 SEG52/ COM0
53 ~ 55 COM1 ~ COM3
57 INH\
58, 59 VLC1, VLC2
61 OSC
62 CE
63 SCK
64 SI
56 VDD
60 VSS
I/O
O LCD Segment output pins / General-purpose output pins(Only 1/4Duty Mode)
Select Segment output pins or General-purpose output pins by the instruction.
O LCD Segment output pins.
O LCD Segment output pin or LCD Common output pin.
SEG52 in 1/3 Duty use, COM0 in 1/4 Duty use.
O LCD Common output pins.
I Display off control input pin
INH\ = VSS, Display forced off INH\ = VDD, Display on
I/O LCD power supply
I/O Oscillator output pin.
I Chip enable input pin
I Shift clock input pin
I Serial Data input pin
- Power supply
- Ground
2-33
Pin Description