Embedded Systems Design with the Atmel AVR Microcontroller Part II

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222 CHAPTER 7. ATMEL <strong>AVR</strong> OPERATING PARAMETERS AND INTERFACING PORTD[7] PORTD[6] PORTD[5] PORTD[4] a) a stepper motor rotates a fixed angle per step 1 2 3 4 step b) coil configuration and step sequence TIP130 TIP130 12 VDC TIP130 c) stepper motor interface circuit Figure 7.22: Unipolar stepper motor control circuit. TIP130
CW Vcc = 5.0 volts 4.7 K 470K 74HC14 PB0 (1) (2) 0.1uF 3K 100K 7.6. DC MOTOR SPEED AND DIRECTION CONTROL 223 Vcc = 5.0 volts 74HC14 4.7 K PB1 CCW 470K (3) (4) 0.1uF 100K 3K 1-(TO) PB0 2-(T1) PB1 3-(AIN0) PB2 4-(AIN1) PB3 5-(SS) PB4 PA0 (ADC0)-40 PA1 (ADC1)-39 PA2 (ADC2)-38 PA3 (ADC3)-37 PA4 (ADC4)-36 6-(MOSI) PB5 PA5 (ADC5)-35 7-(MISO) PB6 PA6 (ADC6)-34 VDD 1M 1.0 uF sys reset 8-(SCK) PB7 9-RESET 10-Vcc 11-GND PA7 (ADC7)-33 AREF-32 ATmega164 AGND-31 AVCC-30 VDD 12-XTAL2 PC7 (TOSC2)-29 13-XTAL1 PC6 (TOSC1)-28 14-(RXD0) PD0 PC5-27 15-(TXD0) PD1 PC4-26 16-(RXD1) PD2 PC3-25 17-(TXD1) PD3 PC2-24 18-(OC1B) PD4 PC1-23 19-(OC1A) PD5 PC0-22 20-(ICP) PD6 PD7 (OC2)-21 TIP130 TIP130 Figure 7.23: Unipolar stepper motor control circuit. PORTB PORTD PORTA PORTC 12 VDC (orange) (red) (brown) (yellow) (green) TIP130 c) stepper motor interface circuit TIP130 B CE TIP130 (top view)
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Embedded Systems Design with the At
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iv An Introduction to Logic Circuit
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Copyright © 2010 by Morgan & Clayp
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ABSTRACT This textbook provides pra
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x CONTENTS 7 6.9.3 Input Capture Mo
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xii CONTENTS A 8.5.3 Circuit diagra
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Preface In 2006 Morgan & Claypool P
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138 CHAPTER 6. TIMING SUBSYSTEM x(t
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272 APPENDIX A. ATMEGA164 REGISTER
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274 APPENDIX B. ATMEGA164 HEADER FI
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Author’s Biography STEVEN F. BARR
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296 INDEX switch debouncing, 187 sw
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Embedded Systems Design with the Atmel AVR Microcontroller Part II

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