Freescale Semiconductor DRM079 manual Variable Speed DC Fan Control using the MC9RS08KA2

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Variable Speed DC Fan Control using the MC9RS08KA2

Designer Reference Manual

RS08

Microcontrollers

DRM079 Rev. 0 5/2006

freescale.com

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Contents Variable Speed DC Fan Control using the MC9RS08KA2 Page Revision History Variable Speed DC Fan Control using the MC9RS08KA2Freescale Semiconductor Table of Contents Freescale Semiconductor Introduction Chapter IntroductionDC Fan Reference Design Targets Freescale’s New Generation Ultra Low Cost MCUBi-Phase Bldc Motor Diagram Bi-Phase Bldc MotorFreescale Semiconductor Commutation Chapter Motor ControlRotor Position Control Speed Control Commutation WaveformsMotor Startup Fault DetectionFreescale Semiconductor Chapter Implementation Block DiagramHardware Resources Control Loop Firmware Control Loop = V DD⎜ RC⎟ Temperature Sensor MeasurementACMPSCACF, Acmpsc #63, MtimmodAcmpsc Temperature Conversion Temperature Conversion Table Freescale Semiconductor VR1 Freescale Semiconductor Appendix B Program Listing Mtimtclkfalling RtidisableMtimtclkrising AcmpoutputbothMAPADDR6NVFTRIM, Icssc #HIGH613NVICSTRM, PageselMAPADDR6NVICSTRM, Icstrm $3FFA #ICSDIV2, ICSC2Kbipe Kbies#MTIMBUSCLKMTIMDIV256, Mtimclk #255, MtimmodRts Drive coil MAPADDR6SRSMTIMSCTOF, Mtimsc KBISCKBACK, KbiscBUZZER, Ptad Kbisc#6, Mtimmod #24, Mtimmod#30, Mtimmod Page How to Reach Us