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Freescale Semiconductor S08 Development Support, Power, Reset Switch, Clock Source, 2.8 RS-232

Models: S08

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2.4 Development Support

Development Support

2.4 Development Support

Application development and debug for the MC9S08AW60 is supported through a 6-pin BDM header (CON8). The pinout is as follows:

Table 2-1. BDM Connector (CON8) Pinout

BKGD	1	2	GND

NC	3	4	RESET

NC	5	6	VDD

2.5 Power

The DEMO9S08AW60LED is powered externally through the barrel connector CON2. This connector is a 2.5 mm, center positive connector. Voltage supplied through this connector should be positive 12 volts DC. This is also the supply voltage for the LED light box.

The DEMO9S08AW60LED can be run with VDD set to 5 or 3 volts. To run the board at 3V, move jumper JP1 to the 1-2, 3V position.

LED D5 turns green to let you know that power has been correctly applied to the board.

2.6 Reset Switch

The reset switch (SW5) provides a way to apply a reset to the MCU. The reset switch is connected directly to the RESET signal of the MCU. A 10 kΩ pullup resistor to VDD on the RESET signal allows for normal operation. When the reset switch is pressed, the RESET signal is grounded and the MCU recognizes a reset.

2.7 Clock Source

An on-board 16 MHz crystal (X1) is connected between the XTAL and EXTAL pins of the MCU. This offers flexibility on clock source selection. Refer to the MC9S08AW60 data sheet for details on how to use the internal clock generation (ICG) module to generate the system clocks for the MCU.

2.8 RS-232

An RS-232 translator provides RS-232 communication on COM connector P2. This connector is a 9-pin Dsub right angle connector. TXD and RXD signals are routed from the MCU to the RS-232 transceiver.

Table 2-2 . RS-232 Connections

MCU Port	COM Signal	I/O Port Connector

PTE0/TXD1	TXD OUT	P2-2

PTE1/RXD1	RXD IN	P2-3

LED Lighting Control using the MC9S08AW60, Rev. 1

Freescale Semiconductor

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Freescale Semiconductor S08 Development Support, Power, Reset Switch, Clock Source, 2.8 RS-232, 2 . RS-232 Connections

Contents

Designer Reference Manual LED Lighting Control Using the MC9S08AW60S08 Microcontrollers freescale.comPage Revision History LED Lighting Control using the MC9S08AW60Designer Reference Manual Freescale Semiconductor Revision History LED Lighting Control using the MC9S08AW60, RevDemo Setup Table of ContentsChapter IntroductionAppendix A Schematics Appendix B Bill of Materials Chapter Introduction 1.2 Features1.1 Introduction 1.4 MC9S08AW60 1.3 System OverviewFigure 1-1 . System Block Diagram Table 1-1. Devices in the MC9S08AW60/48/32/16 SeriesLED Lighting Control using the MC9S08AW60, Rev FeatureTable 1-2. Peripherals Available per Package Type MC9S08AW60Freescale Semiconductor Introduction LED Lighting Control using the MC9S08AW60, Rev2.1 Introduction Chapter Hardware DescriptionAW60 Control Board Figure 2-1. Light-Box Demo2.3 DEMO9S08AW60LED Layout 2.2 DEMO9S08AW60LED FeaturesFigure 2-2. DEMO9S08AW60LED Top Side 2.6 Reset Switch 2.5 Power2.4 Development Support 2.7 Clock Source2.9.2 LED Indicators 2.9.1 Pushbutton Switches2.9 User Options 2.9.3 ADC InterfaceTable 2-5. IIC Port 2.9.4 Other I/O ConnectorsTable 2-6. SCI Port Table 2-7. SPI PortTable 2-9. LED Light Box Interface Table 2-8. PWM PortTable 2-10. Sensor Interface Type A Table 2-11. Sensor Interface Type H Table 2-12. Temperature Sensor InputTable 2-13. User Assignable Input Table 2-13. User Assignable Input Continued 2.10 LED Driving Board2.11.1 RGB LED Chip 2.11 LED Driver Design ProceduresFigure 2-3. DC-to-DC Boost Converter and Linear LED Driver 2.11.3 Boost Converter 2.11.2 Current Sense ResistorFigure 2-4. Equations for Boost Converter Freescale Semiconductor Hardware Description LED Lighting Control using the MC9S08AW60, Rev3.1 Introduction Chapter Firmware DescriptionFigure 3-1. Firmware Flow Main Program Figure 3-2. Firmware Flow PWM Adjustment 3.2 PC Control ModeFigure 3-3. User Interface Menu 3.3 Standalone Mode Main.c 3.4 Firmware FilesMenu.c SCI.cFreescale Semiconductor Firmware Description LED Lighting Control using the MC9S08AW60, Rev4.2 Hardware and Software Setup Chapter Demo Setup4.2.1 Hardware Setup 4.2.2 PC Software SetupDemo Setup Figure 4-1. Echo Typed Characters SettingLED Lighting Control using the MC9S08AW60, Rev 4.3.1 Demo 1 - Demonstration Display 4.3 Demo ExamplesFigure 4-2. LED Control Menu 4.3.3 Demo 3 - Auto White Balance Control 4.3.2 Demo 2 - Preset Colors Display4.3.4 Demo 4 - PWM Output Frequency Control 4.3.5 Demo 5 - Full Manual Control4.4 Program the MCU Flash 4.5 TroubleshootingRepeat the PC software setup procedures again LED Lighting Control using the MC9S08AW60, Rev Appendix A SchematicsFreescale Semiconductor LED Lighting Control using the MC9S08AW60, RevFreescale Semiconductor LED Lighting Control using the MC9S08AW60, RevFreescale Semiconductor LED Lighting Control using the MC9S08AW60, RevFreescale Semiconductor LED Lighting Control using the MC9S08AW60, RevFreescale Semiconductor LED Lighting Control using the MC9S08AW60, RevLED Lighting Control using the MC9S08AW60, Rev Appendix B Bill of MaterialsTable 4-1 BOM for AW60 Control Board LED Lighting Control using the MC9S08AW60, RevPart Description QuantityPart Description Table 4-2 BOM for LED Driving BoardValue DesignatorsFreescale Semiconductor LED Lighting Control using the MC9S08AW60, RevPage Home Page How to Reach UsE-mail USA/Europe or Locations Not Listed