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ES5120AQ 데이터시트(PDF) 9 Page - Cyrustek corporation |
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ES5120AQ 데이터시트(HTML) 9 Page - Cyrustek corporation |
9 / 29 page ES5120 3 3/4 DIGIT A/D CONVERTER Pin No. Pin No. (40-pin (44-pin Flat Package) Package) Symbol Descrlption 12 7 BC1BT LCD segment drive for"b"and"c"segments of LSD and "low battery". 13 8 BP3 LCD backplane #3. 14 9 BP2 LCD backplane #2. 15 10 BP1 LCD backplane #1. 11 VDISP Sets peak LCD drive signal : VPEAK=(V+)-VDISP may also be set to compensate for temperature variation of LCD crystal threshold voltage.(default: The VDISP pin is connected to DGND.) 16 12 DGND Internal logic digital ground, the logic "O" level. Nominally 4.7V below V+ 17 13 ANNUNC Square wave output at the backplane frequency, synchronized to BP1 ANNUNC can be used to control display annunciators. Connecting an LCD segment to ANNUNC turns it on; connecting it to its backplane turns it off. 18 14 LOGIC "Logic Mode" control input. When connected to V+ the converter is in logic mode. The LCD displays "OL" and the decimal point inputs control the "high" and "low" annunciators. When the "low" annunciator is on, the buzzer will also be on. When unconnected or connected to DGND, the ES5120 is in the voltage frequency measurement mode. This pin has a 5μA internal pulldown to DGND. |
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