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 |
Eval Board
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