AT89C5131 Hardware User Guide

• Introduction
  • 1.1 Overview
  • 1.2 AT90USBKey Features
• Using the AT90USBKey
  • 2.1 Overview
  • 2.2 Power Supply
  • 2.3 Reset
  • 2.4 On-board Resources
  • 2.5 In-System Programming
  • 2.6 Debugging
• Troubleshooting Guide
• Technical Specifications
• Technical Support
• Complete Schematics