Palm LCD

Description

One of the first attempts to interface to nokia LCD.

Uses PIC16F877 and 32k external RAM, also sockets for two I2C EEPROM ics. Didn't 'do' much except I managed to display a 2-bit gray scale image on the 1-bit display ..

Specification

Main Features

MCU: PIC16877

Memory: 32Kb SDRAM

Display: 48x84 b/w LCD

Displayed 2-bit gray scale image
Sockets for I2C EEPROM's
It has a power switch

How it works

The Nokia LCD is a very cool LCD which can easily be obtained cheaply from ebay or your friends old phones :). It uses SPI (serial) interface to the on glass controller (PCD8544). It is easy to use and interface to your project. The display is black and white (1-bit), but as you can see above you can obtain a stable 2-bit image....This was archived by have 2 frame buffer which were toggled to the display, one frame was displayed for twice the time of the other, this enables 4 different 'grays' to be displayed.

The images were processed on the PC with a simple VB program, then sent via serial to the MCU.

Files

PIC asm code for PIC: MEMTEST.ASM

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