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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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7733 데이터시트(PDF) 277 Page - Renesas Technology Corp |
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7733 데이터시트(HTML) 277 Page - Renesas Technology Corp |
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277 / 940 page  A-D CONVERTER 7733 Group User’s Manual 9–12 1 1 n9 0 00000000 0 00000000 1 00000000 n9 n8 1 0000000 n9 n8 n7 n6 n5 n4 n3 1 n9 n8 n7 n6 n5 n4 n3 n2 b9 b0 1st comparison result 2nd comparison result Successive approximation register Vref A-D converter stopped 1st comparison 2nd comparison 3rd comparison 10th comparison Conversion complete 2 VREF 2048 VREF 2 VREF 4 VREF 2048 VREF 2 VREF 4 VREF 8 VREF 2048 VREF 2 VREF 4 VREF 8 VREF VREF 1024 2048 VREF [V] [V] [V] [V] [V] 4 VREF •When n9 = 1, 4 VREF •When n9 = 0, 8 VREF •When n8 = 1, 8 VREF •When n8 = 0, 2 VREF ± – – ±± – ±± ± ± – n2 n1 n1 n0 + – + – 1 1 n9 0 00000000 0 00000000 1 00000000 n9 n8 1 0000000 n9 n8 n7 n6 n5 n4 n3 1 00 n9 n8 n7 n6 n5 n4 n3 n2 00 b9 b0 1st comparison result 2nd comparison result Successive approximation register Vref A-D converter stopped 1st comparison 2nd comparison 3rd comparison 8th comparison Conversion complete 2 VREF 2048 VREF 2 VREF 4 VREF 2048 VREF 2 VREF 4 VREF 8 VREF 2048 VREF 2 VREF 4 VREF 8 VREF VREF 256 2048 VREF [V] [V] [V] [V] [V] 4 VREF •When n9 = 1, 4 VREF •When n9 = 0, 8 VREF •When n8 = 1, 8 VREF •When n8 = 0, 2 VREF ± – – ±± – ±± ± ± – + – + – Table 9.3.2 Change of successive approximation register and Vref during A-D conversion (when resolution = 8 bits) 9.3 A-D conversion method Table 9.3.3 Change of successive approximation register and Vref during A-D conversion (when resolution = 10 bits) |
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