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BU7831KN-E2 Datasheet(PDF) 10 Page - Rohm |
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BU7831KN-E2 Datasheet(HTML) 10 Page - Rohm |
10 / 17 page 10/16 ・Digital part Input such as clock, data is to input "H" or "L" properly about each digital input terminal to contain at the time of standing by as well. If you turn off the power (When Hi-z is input), a control side is to avoid an input terminal's becoming open in either following method It has the possibility that penetration electric current occurs because it becomes the input which isn't fixed as BU7831KN when it isn't avoided. a) Terminal, in less than 10kΩ, pull-down b) Terminal, pull-up c) When it becomes input Hi-z, "L" is given to it. ・CPU interface Fig.26 SDATA will be confirmed by 16 th clock that is inputted after NCS falling edge, and then serial data reflect to internal register by NCS falling edge. The data format is 16bit rear. CPU I/F is 1Byte=16bit. Because it doesn't cope with continuous data transmission, you must surely insert the section of NCS= "H" between 1st Byte and 2nd Byte. The following the is to secure time beyond the SCLK 1 clock. (th≧tcyc) NCS SCL SDATA th Fig.27 A7 SCLK SDATA tcs NCS tds tdh A6 D6 D5 D4 D3 D2 D1 D0 A5 A4 A3 A2 D7 A1 tch tcyc A0 |
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