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Related Manuals for Freescale Semiconductor M68HC08
Summary of Contents for Freescale Semiconductor M68HC08
- Page 1 Freescale Semiconductor, Inc. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Designer Reference Manual M68HC08 Microcontrollers DRM045/D Rev. 0 9/2003 MOTOROLA.COM/SEMICONDUCTORS For More Information On This Product, Go to: www.freescale.com...
- Page 2 Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com...
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Page 3: Reference Design
Freescale Semiconductor, Inc. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Reference Design By: Bill Lucas Motorola Transportation and Standard Products Group Austin, TX To provide the most up-to-date information, the revision of our documents on the World Wide Web will be the most current. Your printed copy may be an earlier revision. -
Page 4: Revision History
Freescale Semiconductor, Inc. Revision History Revision History Revision Page Date Description Level Number(s) September, Initial release 2003 DRM045 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Revision History MOTOROLA For More Information On This Product, Go to: www.freescale.com... -
Page 5: Table Of Contents
Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 2.3.1 2.3.2 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA For More Information On This Product, Section 1. Introduction and Setup Introduction ..........7 About this Manual . - Page 6 Freescale Semiconductor, Inc. Table of Contents DRM045 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Table of Contents MOTOROLA For More Information On This Product, Go to: www.freescale.com...
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Page 7: Section 1. Introduction And Setup
Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 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. -
Page 8: Setup Guide
Freescale Semiconductor, Inc. Introduction and Setup Figure 1-1. MC68HC908QT2 IR Reference PC Board Photograph 1.3 Setup Guide Setup for the reference design PC board can be broken into two parts. • • It is assumed for user operational mode, the MC68HC908QT1 has been programmed with the remote control program. - Page 9 Freescale Semiconductor, Inc. For user operation mode, shorting jumpers need to be installed to jumper blocks JP1–JP4. Shorting jumper block JP1 is not necessary if the small PC board trace under jumper block JP1, on the bottom side of the PC board, has not been cut for microcontroller current monitoring.
- Page 10 Freescale Semiconductor, Inc. Introduction and Setup DRM045 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Introduction and Setup MOTOROLA For More Information On This Product, Go to: www.freescale.com...
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Page 11: Section 2. Operational Description
Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 2.1 Introduction The following subsections describe the operation of the ASB520, MC68HC908QT2 infrared remote control reference design system. LEDs, switches, jumper blocks and FLASH programmer headers, and current monitor jumper block are described here. - Page 12 Freescale Semiconductor, Inc. Operational Description Figure 2-1. PC Board DRM045 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Operational Description MOTOROLA For More Information On This Product, Go to: www.freescale.com...
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Page 13: Header And Jumpers Blocks
Freescale Semiconductor, Inc. 2.4 Header and Jumpers Blocks There is one 16-pin header (2 x 8-pin), J1, and four 2-pin jumper blocks, JP1–JP4, on the PC board. See The header and jumper functions are described as follows. JP1: JP2: JP3:... -
Page 14: Microcontroller Current Monitor Jumper Block
Freescale Semiconductor, Inc. Operational Description 2.5 Microcontroller Current Monitor Jumper Block Jumper block JP1 is intended as a connection on the PC board to measure the stop current of the MC68HC908QT2. To use the feature, you must cut the small PC board trace located on the bottom side of the PC board between the two pins of the jumper block. -
Page 15: Section 3. Pin Description
Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 3.1 Introduction There is one connector resident on the control board, labeled J1. It is the MON08 connector. The following subsection describes signals on connector 3.2 16-Pin Connector J1 Signals to and from the MON08 connector are grouped together on 16-pin (2 x 8-pin) ribbon cable connector J1. - Page 16 Freescale Semiconductor, Inc. Pin Description DRM045 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Pin Description MOTOROLA For More Information On This Product, Go to: www.freescale.com...
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Page 17: Section 4. Schematic And Parts List
Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 4.1 Introduction Schematic and parts list detail are documented in this section. 4.2 Schematic A schematic of the reference design PC board appears in otherwise specified, capacitor values are in microfarads, resistor values are in ohms. - Page 18 Freescale Semiconductor, Inc. Schematic and Parts List DRM045 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Schematic and Parts List MOTOROLA For More Information On This Product, Go to: www.freescale.com...
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Page 19: Parts List
Freescale Semiconductor, Inc. 4.3 Parts List The following parts list describes the parts content for the IR reference PC board. Table 4-1. Reference PC Board Parts List Designators Qty. BAT1 3-AA Battery Holder 470 µF Cap@6.3WV 0.1 µF Capacitor Infrared LED... - Page 20 Freescale Semiconductor, Inc. Schematic and Parts List DRM045 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Schematic and Parts List MOTOROLA For More Information On This Product, Go to: www.freescale.com...
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Page 21: Section 5. Design Considerations
Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 5.1 Introduction Microcontroller systems, in general, have a number of important design considerations related to PC board layout and grounding considerations. These design considerations are discussed in and Visible LED Drive of the reference board’s major circuits are included in LED Drive Circuit 5.2 Grounding... -
Page 22: Switch Circuitry
Freescale Semiconductor, Inc. Design Considerations A logic 1 from port A, bit 0 will turn the NPN transistor on, driving its collector low. The low level applied to the base of the PNP transistor, Q2, will drive its emitter to collector into conduction, illuminating the two LEDs. Resistor R5 is in place to guarantee that Q1 is biased off during initial power on and before the microcontroller’s program has configured port A, bit 1 to behave as a digital... - Page 23 Freescale Semiconductor, Inc. The spreadsheet in on which switch is depressed. Because the voltage from the switches is ratiometric to V The ±6% values in in the design are ±5%. The software uses the minimum values from the table to decode the switches.
- Page 24 Freescale Semiconductor, Inc. Design Considerations DRM045 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Design Considerations MOTOROLA For More Information On This Product, Go to: www.freescale.com...
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Page 25: Section 6. System Testing
Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 6.1 Introduction This section will first explain how to program the control program into FLASH memory of the MC68HC908QT2 microcontroller. It will then, in detail, provide functional testing of both hardware and user software for the ASB520 infrared remote control reference design. -
Page 26: Led And Push Button Test Code
Freescale Semiconductor, Inc. System Testing 6.4 LED and Push Button Test Code Test code is embedded in the ASB520 control program. This test code will test the switches, LED drive circuitry and visible LED, D2. The infrared led, D1, is illuminated, but you can’t see it. -
Page 27: Dvd Player Control Test
Freescale Semiconductor, Inc. 6.5 DVD Player Control Test To test the infrared diode and the rest of the system in user mode, install a music CD in the APEX model 1201 DVD player. Music CDs appear to respond faster than video CD’s in this CD player. - Page 28 Freescale Semiconductor, Inc. System Testing 15. Point the ASB520 board with LED D1 toward the DVD player and 16. Point the ASB520 board with LED D1 toward the DVD player and 17. Point the ASB520 board with LED D1 toward the DVD player and 18.
- Page 29 Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com...
- Page 30 Freescale Semiconductor, Inc. HOW TO REACH US: USA/EUROPE/LOCATIONS NOT LISTED: Motorola Literature Distribution P.O. Box 5405 Denver, Colorado 80217 1-800-521-6274 or 480-768-2130 JAPAN: Motorola Japan Ltd. SPS, Technical Information Center 3-20-1, Minami-Azabu, Minato-ku Tokyo 106-8573, Japan 81-3-3440-3569 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.
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