GPIODM-KPLCD: 8/16-Bit GPIO Exp, 4x4 Keypad, LCD

Summary

The GPIO Expander Keypad and LCD Demo Board is designed to demonstrate using GPIO expanders in a keypad and LCD example. The MCP23X17 interfaces to a 2x16 LCD module and the MCP23X08 interfaces to a 4x4 keyed matrix.

Both the I2C and SPI versions are included on the board to demonstrate both serial interfaces.

The GPIO Expander Keypad and LCD Demo Board has the following features:

Two (2) 8-bit GPIO Expanders
MCP23008 with I2C interface
MCP23S08 with SPI interface
Two (2) 16-bit GPIO Expanders
MCP23017 with I2C interface
MCP23S17 with SPI interface
4X4 keypad layout (16 momentary buttons)
Numbers 0 - 9
Six special function buttons
A 2X16 LCD module
Headers for the MCP23X08 and MCP23X17 pins
Header for programming the PIC18F4550

Specifications

Manufacturer	Microchip Technology
Category	Wired Communication
Sub-Category	Interface Solutions
Eval Board Part Number	GPIODM-KPLCD-ND
Eval Board Supplier	Microchip Technology
Eval Board	Normally In Stock
Purpose	8 & 16-Bit GPIO Expander, 4x4 Keypad, LCD
Component Count + Extras	97 + 3
Features	I²C Interface SPI Interface
Data Rate (Max)	- Not Given
Design Author	Microchip Technology
Main I.C. Base Part	MCP23008 MCP23017 MCP23S08 MCP23S17 PIC18F4550
Date Created By Author	2006-08
Date Added To Library	2012-04