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Mata Kuliah Teknik Digital

Mata Kuliah Teknik Digital. 7. PENCACAH. Pencacah Reguler. Tabel 7.1. Tabel keadaan pencacah biner berurutan. A B C D A+ B+ C+ D+ A B C D A+ B+ C+ D+ 0 0 0 0 0 0 0 1 0 0 0 0 1 1 1 1 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0

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Mata Kuliah Teknik Digital

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  1. Mata Kuliah Teknik Digital 7. PENCACAH

  2. Pencacah Reguler Tabel 7.1. Tabel keadaan pencacah biner berurutan. A B C D A+ B+ C+ D+ A B C D A+ B+ C+ D+ 0 0 0 0 0 0 0 1 0 0 0 0 1 1 1 1 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 1 0 0 1 0 0 0 0 1 0 0 1 1 0 1 0 0 0 0 1 1 0 0 1 0 0 1 0 0 0 1 0 1 0 1 0 0 0 0 1 1 0 1 0 1 0 1 1 0 0 1 0 1 0 1 0 0 0 1 1 0 0 1 1 1 0 1 1 0 0 1 0 1 0 1 1 1 1 0 0 0 0 1 1 1 0 1 1 0 1 0 0 0 1 0 0 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 1 0 1 0 0 1 1 0 0 0 1 0 1 0 1 0 1 1 1 0 1 0 1 0 0 1 1 0 1 1 1 1 0 0 1 0 1 1 1 0 1 0 1 1 0 0 1 1 0 1 1 1 0 0 1 0 1 1 1 1 0 1 1 1 1 0 1 1 0 1 1 1 0 0 1 1 1 0 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 1 0 0 0 0 1 1 1 1 1 1 1 0 (a) (b ) Pencacah naik Pencacah turun

  3. C T C B T B A T A Pencacah dengan flip-flop T Pencacah Naik. A B C A+ B+ C+ TA TB TC 0 0 0 0 0 1 0 0 1 0 0 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 1 1 1 0 0 1 1 1 1 0 0 1 0 1 0 0 1 1 0 1 1 1 0 0 1 1 1 1 0 1 1 1 0 0 1 1 1 1 0 0 0 1 1 1 TC= 1

  4. C T C B T B A T A Pencacah dengan flip-flop T Pencacah Turun. A B C A+ B+ C+ TA TB TC 0 0 0 1 1 1 1 1 1 0 0 1 0 0 0 0 0 1 0 1 0 0 0 1 0 1 1 0 1 1 0 1 0 0 0 1 1 0 0 0 1 1 1 1 1 1 0 1 1 0 0 0 0 1 1 1 0 1 0 1 0 1 1 1 1 1 1 1 0 0 0 1 TC= 1

  5. C T C B T B A T A P TA= MPBC + MPBC TC= P Up/Dn= M TB= MPC + MPC Pencacah dengan flip-flop T Pencacah Naik-Turun Up/Dn= M M= 0 Down M= 1 Up

  6. AB C AB C AB C Pencacah tak beraturan A B C A+B+C+ BC BC BC 0 0 0 0 1 1 A 0 1 A 0 1 A 0 1 0 0 1 - - - 00 1 00 1 00 1 1 0 1 0 1 0 0 01 x 01 x 01 x 0 1 1 0 1 0 11 x 11 1 x 11 x 1 0 0 1 0 1 10 1 x 10 x 10 x 1 0 1 0 0 0 A+ B+ C+ 1 1 0 - - - 1 1 1 - - -

  7. B T B A T A C T C P TB= P(A + C) TA= P(B + C) TC= P(B + C) Pencacah tak beraturan:flip-flop T, Diagram Rangkaian

  8. Diagram waktu pencacah irreguler P A 0 0 0 1 1 0 B 0 1 1 0 0 0 C 0 1 0 0 1 0 TA TB TC

  9. A B C A+B+C+ RA SA RB SB RC SC Q Q+ R S 0 0 0 0 1 1 x 0 0 1 0 1 0 0 x 0 0 0 1 - - - x x x x x x 0 1 0 1 0 1 0 1 0 0 0 1 1 0 0 x 1 0 1 0 0 1 1 0 1 0 x 0 0 x 1 0 1 1 0 x 1 0 0 1 0 1 0 x 0 x 0 1 1 0 1 0 0 0 1 0 x 0 1 0 1 1 0 - - - x x x x x x 1 1 1 - - - x x x x x x Pencacah dengan flip-flop RS

  10. A A A BC 0 1 0 1 BC 0 1 0 1 BC 0 1 0 1 00 x x 00 1 x 00 1 1 01 x x 1 01 x x x 01 x x 1 11 x x x 11 x x x 11 x 1 x 10 1 x x 10 x 1 x 10 x x x SA RA SB RB SC RC SA = BC RA= C SB = AB RB = BC SC = BC RC = C (c) Peta-K Pencacah dengan RS AB AB AB C 00 01 11 10 C 00 01 11 10 C 00 01 11 10 0 0 1 x 1 0 1 0 x 0 0 1 0 x 1 1 x 0 x 0 1 x 1 x 0 1 x 0 x 0 A+ B+ C+

  11. A B C A+B+C+ JA KA JB KB JC KC Q Q+ J K 0 0 0 0 1 1 0 x 1 x 1 x 0 0 0 x 0 0 1 - - - x x x x x x 0 1 1 x 0 1 0 1 0 0 1 x x 1 0 x 1 0 x 1 0 1 1 0 1 0 0 x x 0 x 1 1 1 x 0 1 0 0 1 0 1 x 0 0 x 1 x 1 0 1 0 0 0 x 1 0 x x 1 1 1 0 - - - x x x x x x 1 1 1 - - - x x x x x x Pencacah dengan flip-flop JK Peta Keadaan Berikut

  12. Peta-K Pencacah dengan JK A A A BC 0 1 0 1 BC 0 1 0 1 BC 0 1 0 1 00 x x 00 1 x x 00 1 1 x x 01 x x x 1 01 x x x 01 x x x 1 11 x x x 11 x x x 11 x x 1 x 10 1 x x x 10 x x 1 x 10 x x x JA KA JB KB JC KC JA = BC KA= C JB = A KB = C JC = B KC = 1 AB AB AB C 00 01 11 10 C 00 01 11 10 C 00 01 11 10 0 0 1 x 1 0 1 0 x 0 0 1 0 x 1 1 x 0 x 0 1 x 1 x 0 1 x 0 x 0 A+ B+ C+

  13. DA= AC + BC DB= A B + AC DC= B C Peta-K Pencacah dengan ff D AB AB AB C 00 01 11 10 C 00 01 11 10 C 00 01 11 10 0 0 1 x 1 0 1 0 x 0 0 1 0 x 1 1 x 0 x 0 1 x 1 x 0 1 x 0 x 0 A+ B+ C+

  14. J Q >CK K J Q >CK K 12 8 14 13 10 9 11 Input A Input B QA QD GND QC QB QA QD QC QB >A R0(1) B< R0(2) J Q >CK K 7 3 1 2 5 6 4 R0(1) R0(2) R0(1) R0(2) QD QC QB QA H H L L L L L x C o u n t x L C o u n t R0(1) R0(2) NC VCC NC NC NC J Q >CK K Pencacah dalam Rangkaian Terpadu

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