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8-bit
Microcontrollers
Application Note
Rev. 8073B-AVR-09/07
AVR481: DB101 Hardware User's Guide
Features
• LCD module with RGB backlight
• UART, SPI and TWI with level converters
• RS232 interface
• Joystick for user input and menu navigation
• Piezo speaker
• Powered by Battery or external supply
- 1.8V to 5.5V external supply
• Buck-boost converter on power supply
1 Introduction
The DB101 is a graphical LCD module. It demonstrates how to use an AVR®
microcontroller to control a 128x64 pixel graphical LCD. It can be used as human-
machine interface in conjunction with other application boards: To interface other
application boards the DB101 features the most common communication interfaces
UART, SPI and TWI, available on pin headers on the backside of the board.
This document provides a description of the DB101 board and application note
AVR482 describes the application software.
Figure 1-1. Front-view of the DB101 LCD module.
