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Internal LCD Port
Matthias Melcher edited this page May 16, 2024
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5 revisions
The LCD in the MP2x00 is connected to the main board through a 20 pin flat ribbon cable (0.5mm pitch).
Pin | Name | Function |
---|---|---|
1 | GND | Ground |
2 | GND | |
3 | lcdSwVCC | 3.2V |
4 | lcdFiltFlm | Start of frame (half frame?) High pulse 41.5us every 13.2ms (75.2Hz) |
5 | lcdVccEn | H, 3.2V |
6 | lcdFiltLnClk | Start of line sync, High pulse 240ns every 41.2us or 24.3kHz, 320 lines |
7 | lcdFiltAcMod | 5ms or 200Hz 50% (this frequency is somewhat irregular) |
8 | lcdFlltVdClk | starts 2.5us after LnClk falls, two pixel sync at 640ns or 1.5MHz (this adds up to only 64 bytes per line! Why?) |
9 | lcdFiltD0 | 4 bit 16 grays data for two pixels at 640ns or 1.5MHz, stable when VdClk falls |
10 | lcdFiltD1 | |
11 | lcdFiltD2 | |
12 | lcdFiltD3 | |
13 | lcdFiltD4 | |
14 | lcdFiltD5 | |
15 | lcdFiltD6 | |
16 | lcdFiltD7 | |
17 | d21VVc | 21V |
18 | lcdSwVCC | 3.2V |
19 | GND | |
20 | GND |