18a - 4-Apr-11-3:06 PM IC for 68HC12 EEL 4744 EEL 4744 Menu Intro to Input Capture p p Input Capture Programming Example >Measure the Elapsed time

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4-Apr-11—3:06 PM IC for 68HC12 1 University of Florida, EEL 4744 – File 18a © Drs. Schwartz, Arroyo EEL 4744 EEL 4744 Menu • Intro to Input Capture • Input Capture Programming Example >Measure the Elapsed time between Events • Another Input Capture Look into my . .. 1 University of Florida, EEL 4744 – File 18a © Drs. Schwartz & Arroyo Programming Example >Detect a Signal Pattern See examples on web-site: S&HE (Sec 10.4), M68HC12B/D.pdf (Sec 12), IC3.asm, IC5_Det.asm EEL 4744 EEL 4744 68HC12 Timer Timer Block Diagram 2 University of Florida, EEL 4744 – File 18a © Drs. Schwartz & Arroyo Tech: Fig 12-1
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4-Apr-11—3:06 PM IC for 68HC12 2 University of Florida, EEL 4744 – File 18a © Drs. Schwartz, Arroyo EEL 4744 EEL 4744 Main Timer System S&HE: Fig 10.1 shown and 10.4 3 University of Florida, EEL 4744 – File 18a © Drs. Schwartz & Arroyo EEL 4744 EEL 4744 TIOS: Timer Input Capture/Output Compare Select Register & DDRT • TIOS - Timer Input Capture/Output Compare Select Registe IOS7 IOS6 IOS5 IOS4 IOS3 IOS2 IOS1 IOS0 TIOS $0080 76543210 00000000 RESET Select Register > 0 = IC ; 1= OC DDRT Data Direction Register for Port T 4 University of Florida, EEL 4744 – File 18a © Drs. Schwartz & Arroyo DDRT7 DDRT6 DDRT5 DDRT4 DDRT3 DDRT2 DDRT1 DDRT0 DDRT $00AF RESET • DDRT - Data Direction Register for Port T > 0 = Input ; 1 = Output
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4-Apr-11—3:06 PM IC for 68HC12 3
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18a - 4-Apr-11-3:06 PM IC for 68HC12 EEL 4744 EEL 4744 Menu Intro to Input Capture p p Input Capture Programming Example >Measure the Elapsed time

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