3.4.4 LCD Display

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 3-22. LCD Layout

Figure 3-23. LCD Schematic

Table 3-16. LCD Pinout
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

Table 3-17. LCD Pinout vs Segment
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