Freescale Semiconductor M68HC08 User Manual
Page 5

Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board
DRM045
MOTOROLA
Table of Contents
5
Designer Reference Manual — DRM045
Table of Contents
Section 1. Introduction and Setup
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Section 2. Operational Description
Push Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Red Activity Indicator LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Infrared LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Header and Jumpers Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Microcontroller Current Monitor Jumper Block . . . . . . . . . . . . . . . . . 14
16-Pin Connector J1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Section 4. Schematic and Parts List
Section 5. Design Considerations
Infrared and Visible LED Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . 21
Hardware/Software Testing Summary . . . . . . . . . . . . . . . . . . . . . . . 25
FLASH Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
LED and Push Button Test Code . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
DVD Player Control Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
.
..