Техника микропроцессорных систем в коммутации. Проектирование микропроцессорных систем на базе микроконтроллеров AVR фирмы Atmel. Горохин В.Н. - 22 стр.

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43
Ȼɢɬɵ 3:2 – FOC1A:FOC1B: Ɋɟɠɢɦ ɮɨɪɦɢɪɨɜɚɧɢɹ ɫɢɥɵ ɜɵɯɨɞɧɨɝɨ
ɫɢɝɧɚɥɚ.
Ɋɚɡɪɹɞ 1:0 – WGMn1:0: Ɋɟɠɢɦ ɪɚɛɨɬɵ ɬɚɣɦɟɪɚ–ɫɱɟɬɱɢɤɚ
Ɍɚɛɥɢɰɚ 20. Ɋɟɝɢɫɬɪ ȼ ɭɩɪɚɜɥɟɧɢɹ ɬɚɣɦɟɪɨɦ–ɫɱɟɬɱɢɤɨɦ 1 – TCCR1B
Ɋɚɡɪɹɞ 7 6 5 4 3 2 1 0
ICNC1 ICES1 – WGM13 WGM12 CS12 CS11 CS10
ɑɬ./ɡɚɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ. ɑɬ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ. ɑɬ./Ɂɩ.
ɂɫɯ. ɡɧ. 0 0 0 0 0 0 0 0
Ɋɚɡɪɹɞ 7 – ICNC1: ɉɨɞɚɜɢɬɟɥɶ ɲɭɦɚ ɧɚ ɜɯɨɞɟ ɡɚɯɜɚɬɚ (ɡɚɞɟɪɠɤɚ ɫɢɝɧɚɥɚ ɫ
ɜɯɨɞɚ ɡɚɯɜɚɬɚ ɧɚ 4 ɬɚɤɬɚ)
Ɋɚɡɪɹɞ 6 – ICES1: ȼɵɛɨɪ ɞɟɬɟɤɬɢɪɭɟɦɨɝɨ ɮɪɨɧɬɚ ɧɚ ɜɯɨɞɟ ɡɚɯɜɚɬɚ
Ɋɚɡɪɹɞ 5 – Ɂɚɪɟɡɟɪɜɢɪɨɜɚɧɧɵɣ ɛɢɬ
Ɋɚɡɪɹɞ 4:3 – WGM1 3:2: Ɋɟɠɢɦ ɪɚɛɨɬɵ ɬɚɣɦɟɪɚ-ɫɱɟɬɱɢɤɚ
Ɋɚɡɪɹɞ 2:0 – CS12:0: ȼɵɛɨɪ ɬɚɤɬɨɜɨɝɨ ɢɫɬɨɱɧɢɤɚ
Ⱦɚɧɧɵɟ ɬɪɢ ɛɢɬɚ, ɩɪɟɞɫɬɚɜɥɟɧɧɵɟ ɜ ɬɚɛɥɢɰɟ 21, ɩɨɡɜɨɥɹɸɬ ɜɵɛɪɚɬɶ ɬɚɤɬɨ-
ɜɵɣ ɢɫɬɨɱɧɢɤ ɞɥɹ ɬɚɣɦɟɪɚ-ɫɱɟɬɱɢɤɚ.
Ɍɚɛɥɢɰɚ 21. Ɉɩɢɫɚɧɢɟ ɛɢɬ ɜɵɛɨɪɚ ɬɚɤɬɨɜɨɝɨ ɢɫɬɨɱɧɢɤɚ
CS12 CS11 CS10 Ɉɩɢɫɚɧɢɟ
0 0 0 ɇɟɬ ɫɢɧɯɪɨɧɢɡɚɰɢɢ. Ɍɚɣɦɟɪ-ɫɱɟɬɱɢɤ ɨɫɬɚɧɨɜɥɟɧ.
0 0 1 clkI/O/1 (ɛɟɡ ɩɪɟɞɞɟɥɟɧɢɹ)
0 1 0 clkI/O /8 (ɫ ɩɪɟɞɞɟɥɟɧɢɟɦ)
0 1 1 clkI/O/64 (ɫ ɩɪɟɞɞɟɥɟɧɢɟɦ)
1 0 0 clkI/O/256 (ɫ ɩɪɟɞɞɟɥɟɧɢɟɦ)
1 0 1 clkI/O/1024 (ɫ ɩɪɟɞɞɟɥɟɧɢɟɦ)
1 1 0
ȼɧɟɲɧɢɣ ɬɚɤɬɨɜɵɣ ɢɫɬɨɱɧɢɤ ɫ ɜɵɜ. T1. ɋɢɧɯɪɨ-
ɧɢɡɚɰɢɹ ɩɨ ɩɚɞɚɸɳɟɦɭ ɮɪɨɧɬɭ.
1 1 1
ȼɧɟɲɧɢɣ ɬɚɤɬɨɜɵɣ ɢɫɬɨɱɧɢɤ ɫ ɜɵɜ. T1. ɋɢɧɯɪɨ-
ɧɢɡɚɰɢɹ ɩɨ ɧɚɪɚɫɬɚɸɳɟɦɭ ɮɪɨɧɬɭ.
44
ȿɫɥɢ ɞɥɹ ɬɚɤɬɢɪɨɜɚɧɢɹ ɬɚɣɦɟɪɚ ɜɵɛɪɚɧ ɜɧɟɲɧɢɣ ɜɵɜɨɞ T1, ɬɨ ɞɚɧɧɚɹ
ɮɭɧɤɰɢɹ ɡɚ ɧɢɦ ɫɨɯɪɚɧɹɟɬɫɹ, ɞɚɠɟ ɩɪɢ ɟɝɨ ɧɚɫɬɪɨɣɤɟ ɧɚ ɜɵɜɨɞ. Ⱦɚɧɧɚɹ ɮɭɧɤɰɢɹ
ɩɨɡɜɨɥɹɟɬ ɩɪɨɝɪɚɦɦɧɨ ɭɩɪɚɜɥɹɬɶ ɫɱɟɬɨɦ.
ȼ ɬɚɛɥɢɰɟ 22 ɩɪɟɞɫɬɚɜɥɟɧɵ ɪɚɡɪɹɞɵ ɬɚɣɦɟɪ-ɫɱɟɬɱɢɤɨɜ 1 – TCNT1H ɢ
TCNT1L.
Ɍɚɛɥɢɰɚ 22. Ɍɚɣɦɟɪ-ɫɱɟɬɱɢɤ 1 – TCNT1H ɢ TCNT1L
Ɋɚɡɪɹɞ 7 6 5 4 3 2 1 0
TCNT1[15:8] TCNT1H
TCNT1[7:0] TCNT1L
ɑɬ./ɡɚɩ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ.
ɂɫɯ. ɡɧ. 0 0 0 0 0 0 0 0
Ⱦɜɟ ɹɱɟɣɤɢ ɜ ɨɛɥɚɫɬɢ ɜɜɨɞɚ-ɜɵɜɨɞɚ (TCNT1H ɢ TCNT1L, ɜɦɟɫɬɟ TCNT1)
ɞɚɸɬ ɩɨɥɧɵɣ ɞɨɫɬɭɩ, ɤɚɤ ɧɚ ɱɬɟɧɢɟ, ɬɚɤ ɢ ɧɚ ɡɚɩɢɫɶ ɤ 16-ɪɚɡɪɹɞɧɨɦɭ ɫɱɟɬɱɢɤɭ.
ȼ ɰɟɥɹɯ ɝɚɪɚɧɬɢɪɨɜɚɧɢɹ ɨɞɧɨɜɪɟɦɟɧɧɨɫɬɢ ɱɬɟɧɢɹ ɢ ɡɚɩɢɫɢ ɫɬɚɪɲɟɝɨ ɢ ɦɥɚɞɲɟ-
ɝɨ ɛɚɣɬɨɜ ɷɬɢɯ ɪɟɝɢɫɬɪɨɜ, ɞɨɫɬɭɩ ɨɪɝɚɧɢɡɨɜɚɧ ɫ ɢɫɩɨɥɶɡɨɜɚɧɢɟɦ 8-ɪɚɡɪɹɞɧɨɝɨ
ɜɪɟɦɟɧɧɨɝɨ ɪɟɝɢɫɬɪɚ ɫɬɚɪɲɟɝɨ ɛɚɣɬɚ (TEMP). ȼɪɟɦɟɧɧɵɣ ɪɟɝɢɫɬɪ ɹɜɥɹɟɬɫɹ ɨɛ-
ɳɢɦ ɞɥɹ ɜɫɟɯ 16-ɪɚɡɪɹɞɧɵɯ ɪɟɝɢɫɬɪɨɜ ɬɚɣɦɟɪɚ.
ɂɡɦɟɧɟɧɢɟ ɫɨɞɟɪɠɢɦɨɝɨ ɫɱɟɬɱɢɤɚ TCNT1 ɜɨ ɜɪɟɦɹ ɟɝɨ ɪɚɛɨɬɵ (ɫɱɟɬɚ) ɫɜɹ-
ɡɚɧɨ ɫ ɪɢɫɤɨɦ ɜɨɡɧɢɤɧɨɜɟɧɢɹ ɫɨɜɩɚɞɟɧɢɹ ɦɟɠɞɭ TCNT1 ɢ ɨɞɧɢɦ ɢɡ ɪɟɝɢɫɬɪɨɜ
OCR1x. Ɂɚɩɢɫɶ ɜ ɪɟɝɢɫɬɪ TCNT1 ɛɥɨɤɢɪɭɟɬ ɨɬɪɚɛɨɬɤɭ ɫɨɜɩɚɞɟɧɢɹ, ɤɨɬɨɪɨɟ
ɜɨɡɧɢɤɧɟɬ ɧɚ ɫɥɟɞɭɸɳɟɦ ɬɚɤɬɟ, ɞɥɹ ɜɫɟɯ ɛɥɨɤɨɜ ɫɪɚɜɧɟɧɢɹ.
ȼ ɬɚɛɥɢɰɚɯ 23 ɢ 24 ɩɪɟɞɫɬɚɜɥɟɧɵ ɪɚɡɪɹɞɵ ɪɟɝɢɫɬɪɨɜ ɫɪɚɜɧɟɧɢɹ 1A –
OCR1AH, OCR1AL ɢ 1B – OCR1BH ɢ OCR1BL
Ɍɚɛɥɢɰɚ 23. Ɋɟɝɢɫɬɪ ɫɪɚɜɧɟɧɢɹ 1 A – OCR1AH ɢ OCR1AL
Ɋɚɡɪɹɞ 7 6 5 4 3 2 1 0
OCR1A [15:8] OCR1AH
OCR1A [7:0] OCR1AL
ɑɬ./ɡɚɩ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ. Ɂɩ./ɑɬ.
ɂɫɯ. ɡɧ. 0 0 0 0 0 0 0 0

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