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Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board DRM045
MOTOROLA Introduction and Setup 7
Designer Reference Manual — DRM045
Section 1. Introduction and Setup
1.1 Introduction
Motorola’s ASB520, MC68HC908QT2 Infrared Remote Control Reference PC
Board and software are designed to demonstrate how a simple, limited
function, dedicated remote control system could be designed. The objective is
to keep the design simple so a user can pick portions of interest to his design
and turn them into an application specific system. This system is specifically
programmed to control an APEX model 1201 DVD player.
A few of the more noteworthy features of the reference PC board are listed as
follows:
• 8-pin MC68HC908QT2 microcontroller
• Infrared LED and driver
• Visible LED to show activity
• Six user push buttons
• MON08 programming interface for in-circuit FLASH programming
• Battery holder for 3-AA cells
• Microcontroller current monitor jumper block
A photograph of the reference PC board appears in Figure 1-1.
1.2 About this Manual
Key items can be found in the following locations in this manual:
• Setup instructions are found in 1.3 Setup Guide.
• Schematics are found in 4.2 Schematic.
• Pin assignments for MON08 connector J1 are shown in Table 3-1.
MON08 Pin Assignments.
• User interfaces are described in 2.3 LEDs.
• For those interested in the design aspects of the reference PC board’s
circuitry, a description is provided in Section 5. Design
Considerations.
• System testing, hardware and software, are described in detail in
Section 6. System Testing.
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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