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# 1.2.7.4 Demo LCD Display

The Demo boards include an LCD customized for a smart metering application measurements. This LCD is driven directly by the PIC32CXMTx MCU, generating the driving signals for the common lines and the segments. The LCD layout is shown below.

Figure 1-76.LCD Display Layout

The Demo Meter application periodically updates the display, showing different information in a loop. The user can manually switch the display content by pressing the Scroll-up and Scroll-down buttons.

The information displayed is managed by the application, and the typical parameters shown are summarized in the following table.

Table 1-7.LCD Information
Info Type | Display Content | Info Type | Display Content
--- | --- | --- | ---
00 | Display All | 11 | Phase B voltage RMS value
01 | Board information | 12 | Phase C voltage RMS value
02 | Firmware Version | 13 | Phase A current RMS value
03 | Total active energy | 14 | Phase B current RMS value
04 | TOU1 active energy | 15 | Phase C current RMS value
05 | TOU2 active energy | 16 | Total maximum demand
06 | TOU3 active energy | 17 | TOU1 maximum demand
07 | TOU4 active energy | 18 | TOU2 maximum demand
08 | RTC time | 19 | TOU3 maximum demand
09 | RTC date | 20 | TOU4 maximum demand
10 | Phase A voltage RMS value | — | —

The Demo Meter application switches on all the display elements when the system is powered on. Then, it shows the board information and the firmware version. Finally, the remaining information in the table is cyclically displayed if applicable.

The display includes specific icons for a smart metering application, to make the data visualization easier for the user.

Rev: E