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| Datasheet File OCR Text: |
| CT-77 ---- 1 CT-77 p. 1 -???]3?-?^ + ???o? ic ?? \??? ?? s ? seq ?|3k?q??????\?g 2?@?q?g?o|t?g (power on) 2?g?q?g 1~16 -ooq3s?? + ???o 2?t?q?g 1~ 4 -ooq3s?? + ???o 2?|?q?g 5~ 8 -ooq3s?? + ???o 2?-?q?g 9~12 -ooq3s?? + ???o 2???q?g 13~16 -ooq3s?? + ???o 2?c?q?g?o|?]??as|3-???c 2?k?q?g?o|ai???as|3-???c u@1q?d3?g 2.0 ~ 5.0 vdc ?o|h-????? ic |3 16 -ooq?asi||?q?c vol ?|3go?\?g 1. -??ot??|3|o?-?q ( j?b?bp?bln ) ??????? 2. ?]???ai???x?|3go?3t???? ?????c ic ?u?}?yt?m 16 pin dip ]?? ?? ic ?u?}?yt?m 1V?}?y ??2??1 \ ?? ? 1V?}?y ??2??1 \ ?? ? 1 zcc 60hz 2?oy 2 3 osco osci ???1?x ???1?j 10 11 12 13 l4 l3 l2 l1 ?o| 4 ?x ?o| 3 ?x ?o| 2 ?x ?o| 1 ?x 14 15 zc vss 60hz ?x 1q?-t 4 5 6 7 8 9 music seq vol pr reset -???xoy \???? -?q?3t??????? power on reset - - - reset ?x??? * 16 vddfng vdd vdd ??h|a@?q?g 1q?? * 16p dip s|3?u?a2?@?q?g?o|t?g ?? oq||wo 1. jingle bells 9. the peace carol 2. rudolph, the red-nosed rei ndeer 10. when a child is born 3. santa claus is coming to town 11. eion?s a daughter 4. little drummer boy 12. away in a manger 5. silent night 13. angels we have hard on high 6. deck the halls 14. we wish you merry christmas 7. silver bells 15. o! come all ye faithful 8. o! tannenbaum 16. hark! the herald angels sing CT-77 zcc vdd osco vss osci zc music l1 seq l2 vol l3 pr l4 8 -- reset 16 2 15 3 14 4 13 5 12 6 11 7 10 1 9 6 16 2 osco vddfng vdd 7 9 reset pr vol cdt6154 1 zcc ts1 ts2 14 zc 13 l1 12 l2 11 l3 3 osci 4 music 5 seq 15 vss 10 l4 ic ?3?y vdd 1830 x 1590 m ?abb??a?|3--?q chip design technology 89 |~ 3 ? 8 H
CT-77 ---- 2 1 CT-77 p. 2 -???]3?-?^ + ???o? ic ?? ac 3??u?? d1 d2 d3 d4 d5 ?g 1n4005 1. u?x 1 -?x??g zd ?g 3.9v zener diode l1 ?a?n l3 reset q1 q2 q3 q4 ?g xl1225 (scr) q5 ?g 2sc945 2. u?x 2 -?x??g c1 ?g 47 g f / 10v l1 ?b l2 ?a?n l3 reset c2 ?g 100 g f / 10v c3 ?g 0.1 o f 3. u?x 3 -?x??g r1 ?g 39k 1/2w l1 ?b l2 ?b l3 ?a?n l4 reset r2 ?g 10k 1/4w r3 ?g 2m 1/4w r4 ?g 10k 1/4w r5 ?g 56k 1/4w r6 ?g 200k 1/4w l1 l2 l3 l4 ?g ?o| ps1 ps2 ?g push botton zcc vdd osco vss osci zc music l2 seq l3 vol l4 pr l1 16 2 15 3 14 4 13 5 12 6 11 7 10 - - reset 8 9 r6 q2 q3 q4 q1 l2 l3 l4 l1 d1 d2 d4 d3 ac 110v d5 r1 r2 c1 zd c2 c3 ps1 ps2 r3 r4 r5 q5 buzzer 1s?? ?u????? CT-77 |
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