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HT815D0 数据表(PDF) 2 Page - Holtek Semiconductor Inc |
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HT815D0 数据表(HTML) 2 Page - Holtek Semiconductor Inc |
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2 / 15 page ![]() Block Diagram Pin Assignment HT815D0 2 March 15, 2000 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 NC NC NC NC VD D AU D OS C 2 OS C 1 NC NC KE Y3 KE Y2 KE Y1 FL A G 2 VS S FL A G 1 KEY 6 KEY 5 KEY 4 KEY 3 KEY 2 KEY 1 FL A G 2 VSS FL A G 1 OS C 1 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 KE Y7 KE Y8 KE Y9 KE Y1 0 KE Y1 1 KE Y1 2 NC VD D AU D OS C 2 KEY 6 KEY 5 KEY 4 KEY 3 KEY 2 KEY 1 NC NC NC NC FL A G 2 VSS 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 KEY 7 KEY 8 KEY 9 KEY 1 0 KEY 1 1 KEY 1 2 NC VD D AU D OS C 2 OS C 1 FL A G 1 H T 815D 0 1 6 D I P H T 815D 0 2 0 D I P/ SO P H T 815D 0 2 4 D I P/ SO P D ebounc e Ci rc u i t O n e- s h ot Ke y T a b l e O sci l l a t o r Ci rc u i t Ti m e B a s e G ene rat o r T abl e R O M 508 ´ 13- bi t DA C & O u t put C ont rol S peec h R O M 64K ´ 6 - b i t RO M A ddres s C ount e r KE Y1 KE Y1 2 AU D S t at us Di s p l a y C ont rol l e r FL A G 1 FL A G 2 VD D VS S OS C 1 OS C 2 |
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