PCD8544 LCD driver (Nokia 5110)

Nokia 5110 Front

Nokia 5110 Back

This is a monochome LCD display driver typically used in the Nokia 5110 LCD display (84x48), but also the 5120, 5130, 5160, 6110, 6150, 3210, 3310, 3315, 3330, 3350, 3410 and 6210. The LCDs are available (pre-mounted on PCBs) cheaply from via various suppliers online.

They draw very small amounts of power - around 200uA - making them extremely good for use in battery powered devices.

Support is included in the PCD8544 (About Modules) module, using the Graphics library.

Just wire up as follows:

LCD pin Pin type Example pin on Espruino Board
LIGHT Any GND (backlight on)
VCC 3.3v 3.3
DC Any B6
CE Any B7
RST Any B8
SPI1.setup({ sck:B3, mosi:B5 });
var g = require("PCD8544").connect(SPI1, B6 /*DC*/, B7 /*CE*/, B8 /*RST*/, function() {


  • The display needs initialising each time the power is applied - so if you're planning on saving your code, put .connect in the onInit() function.
  • The display takes around 100ms to initialise after calling 'connect'. There's an optional callback that is called after this time (shown in the example). Sending data to it before initialisation may cause it not to initialise correctly.
  • This module uses a double buffer, which means you need to call g.flip() before any changes take effect.
  • The display seems picky about lower SPI baud rates - try and keep above 1Mhz in SPI.setup
  • You can use g.setContrast(0.45) to set the contrast of the LCD display. It takes a value between 0 and 1 - 0.5 is the default.


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