The PIC32CXMTSH-DB integrates an LCD customized for the smart metering application field. This LCD is driven directly by the PIC32CXMTSH generating the driving signals for the 8 common lines and the 20 segments. The LCD layout and its relative pinout are described below:
Figure 1. LCD Layout
Figure 2. LCD Schematic
| Pin No | Pin Name | PIO | Pin No | Pin Name | PIO |
|---|---|---|---|---|---|
| 1 | Segment 0 | PB24 | 15 | COM1 | PA21 |
| 2 | Segment 1 | PB23 | 16 | COM2 | PA22 |
| 3 | Segment 2 | PB20 | 17 | COM3 | PA23 |
| 4 | Segment 3 | PB17 | 18 | COM4 | PA24 |
| 5 | Segment 4 | PB15 | 19 | COM5 | PA25 |
| 6 | Segment 5 | PB13 | 20 | COM6 | PA26 |
| 7 | Segment 6 | PB11 | 21 | COM7 | PA27 |
| 8 | Segment 7 | PB9 | 22 | COM8 | PA28 |
| 9 | Segment 8 | PB8 | 23 | Segment 14 | PB10 |
| 10 | Segment 9 | PB7 | 24 | Segment 15 | PB12 |
| 11 | Segment 10 | PB6 | 25 | Segment 16 | PB14 |
| 12 | Segment 11 | PB5 | 26 | Segment 17 | PB16 |
| 13 | Segment 12 | PB4 | 27 | Segment 18 | PB18 |
| 14 | Segment 13 | PB3 | 28 | Segment 19 | PB22 |
| PIN | COM1 | COM3 | COM3 | COM4 | COM5 | COM6 | COM7 | COM8 |
|---|---|---|---|---|---|---|---|---|
| 1 | 15A | 15B | 15F | 15G | 15C | 15E | 15D | P8 |
| 2 | 14A | 14B | 14F | 14G | 14C | 14E | 14D | P7 |
| 3 | 13A | 13B | 13F | 13G | 13C | 13E | 13D | P6 |
| 4 | 12A | 12B | 12F | 12G | 12C | 12E | 12D | P5 |
| 5 | 11A | 11B | 11F | 11G | 11C | 11E | 11D | — |
| 6 | 10A | 10B | 10F | 10G | 10C | 10E | 10D | P4 |
| 7 | 9A | 9B | 9F | 9G | 9C | 9E | 9D | — |
| 8 | P2 | 6D | 6C | 6E | 6G | 6B | 6F | 6A |
| 9 | P3 | 7D | 7C | 7E | 7G | 7B | 7F | 7A |
| 10 | P9 | 8D | 8C | 8E | 8G | 8B | 8F | 8A |
| 11 | P10 | P11 | P12 | P13 | P15 | P16 | P17 | — |
| 12 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
| 13 | P18 | 9 | 11 | 10 | 11’ | 12 | 13 | 14 |
| 14 | P30 | P31 | P32 | P33 | P20 | P19 | P21 | P22 |
| 15 | COM1 | — | — | — | — | — | — | — |
| 16 | — | COM2 | — | — | — | — | — | — |
| 17 | — | — | COM3 | — | — | — | — | — |
| 18 | — | — | — | COM4 | — | — | — | — |
| 19 | — | — | — | — | COM5 | — | — | — |
| 20 | — | — | — | — | — | COM6 | — | — |
| 21 | — | — | — | — | — | — | COM7 | — |
| 22 | — | — | — | — | — | — | — | COM8 |
| 23 | — | — | P29 | P28 | P26 | P25 | P24 | P23 |
| 24 | P1 | 5D | 5C | 5E | 5G | 5B | 5F | 5A |
| 25 | COL2 | 4D | 4C | 4E | 4G | 4B | 4F | 4A |
| 26 | — | 3D | 3C | 3E | 3G | 3B | 3F | 3A |
| 27 | COL1 | 2D | 2C | 2E | 2G | 2B | 2F | 2A |
| 28 | — | 1D | 1C | 1E | 1G | 1B | 1F | 1A |