Renesas H8SX/1668R Chapter 3. Power Supply

Chapter 3. Power Supply

3.1. Requirements

This RSK operates from a 5V power supply.

A diode provides reverse polarity protection only if a current limiting power supply is used.

All RSK boards are supplied with an E10A debugger.

All RSK boards have an optional centre positive supply connector using a 2.0mm barrel power jack.

Warning

The RSK is neither under nor over voltage protect ed. Use a centre positive supply for this board.

3.2. Power – Up Behaviour

When the RSK is purchased the RSK board has the ‘Release’ or stand alone code from the example tutorial code pre-programmed into the

Renesas microcontroller. On powering up the board the user LEDs will start to flash. After 200 flashes, or after pressing a switch the LEDs

will flash at a rate controlled by the potentiometer.

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Contents

Main REG10J0131-0100 Renesas Starter Kit for H8SX/1668R Users Manual RENESAS SINGLE-CHIP MICROCOMPUTER H8SX F AMIL Y Rev .1.00 Revision date: 04.APR.2008 www.renesas.com Table of Contents Chapter 1. Preface Chapter 2. Purpose Chapter 3. Power Supply 3.1. Requirements 3.2. Power Up Behaviour Chapt er 4. Board Layout 4.1. Component Layout 4.2. Board Dimensions Chapter 5. Block Diagram Figure 5-1 shows the CPU board components and their connectivity. 8 Microcontroller Figure 5-1: Block Diagram Figure 5-2 shows the connections to the RSK. Page Chapter 6. User Circuitry 6.1. Switches 6.2. LEDs 6.3. Potentiometer 6.4. Serial port 6.5. Debug LCD Module 6.6.Option Links Page Page Page Page Page 6.7. Oscillator Sources 6.8. Reset Circuit Page Chapter 7. Modes 7.1. Boot mode 7.2. Singe chip mode Page Chapter 9. Headers 9.1. Microcontroller Headers Page Page Page 9.2. Application Headers Page Page Chapter 10. Code Development Page Page Chapter 12. Additional Information Page Renesas Starter Kit for H8SX/1668R User's Manual