LCD module data
Numeric
Character
Mixed
- ≡ Uniden FP203 ✘
- ≡ Uniden FP204 ✘
- ≡ VIP89Z G-Code ✘
Graphic
key: ≡ parallel, ↔ serial, ~ LVDS, _ unknown, ✘ discarded as not useful
Resources
This is an old revision of the document!
LCD Description |
|
|---|---|
| Model | METP0000 |
| Manufacturer | Mettler Toledo |
| Recovered from | Mettler Toledo Model 8217 scale |
| Board IDs | OPCVO, METP0000 REV B |
| LCD type | |
| Polarizer type | reflective |
| Columns | 6 |
| Rows | 1 |
| Char matrix | 7 segment with underscore, decimal point and comma |
| Driver IC | NEC μPD7225 1) 2) |
| Backlight | - |
| Arduino driver | |
| Connector | RJ45 |
| Num Pins | 8 |
| Pin spacing | “ |
| Arduino test rig 3) | |||||
|---|---|---|---|---|---|
| Pin# | Label | IC pin | Label | Pin | colour |
| 1 | Busy | ~Busy | - | white/orange | |
| 2 | Reset | ~Reset | D7 | orange | |
| 3 | Si | Si | D5 | white/green | |
| 4 | SClk | ~SCK | D4 | blue | |
| 5 | CS | ~CS | D8 | white/blue | |
| 6 | ~C/D | C/~D | D6 | green | |
| 7 | GND | 20 | Vss | GND | white/brown |
| 8 | +5V | 21 | Vdd | +5V | brown |
Appears to be wired for 1/3 bias, divide by 3 or 4 time division. Comma and underscore may be implemented as segments of extra characters (ie 7th and 8th digits??). Data and control lines are buffered by inverting schmitt triggers (74hc14) . Front keypad switches appear to be encoded by a 74HC165 shift register and wire-ORed to the pin 1 output line.
Examples :
electronic/lcd/metp0000.1540804674.txt.gz · Last modified: 2018/10/29 09:17 by tony
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