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MC81F4104M Datasheet(PDF) 84 Page - Finechips |
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MC81F4104M Datasheet(HTML) 84 Page - Finechips |
84 / 118 page ![]() MC81F4104 84 October 19, 2009 Ver.1.35 19.1 Registers ADMR A/D MODE REGISTER 00DDH 7 6 5 4 3 2 1 0 ADMR SSBIT EOC ADCLK ADCH Reset value: 00H R/W R R/W R/W R/W R/W R/W R/W After reset, the start/stop bit is turned off. You can select only one analog input channel at a time. Other analog input (AD0-AD2, AD4-AD7,BGR) can be selected dynamically by manipulating the ADCH(ADMR[4:0]). And the pins not used for analog input can be used for normal I/O function. SSBIT Start or Stop bit 0: Stop operation 1: Start operation EOC End of Conversion 0: Conversion not complete 1: Conversion complete ADCLK A/D Clock Selection 00: fxx/1 01: fxx/2 10: fxx/4 11: fxx/8 ADCH A/D Input Pin Selection 0000: AN0 0001: AN1 0010: AN2 0011: Not available 0100: AN4 0101: AN5 0110: AN6 0111: AN7 1000: available 1001: Not available 1010: Not available 1011: Not available 1100: Not available 1101: Not available 1110: AN14 1111: BGR ADDRH A/D CONVERTER DATA HIGH REGISTER 00DEH 7 6 5 4 3 2 1 0 ADDRH .11 .10 .9 .8 .7 .6 .5 .4 Reset value: XXH R R R R R R R R A 8-bit data register for higher 8-bits of the 12-bit ADC result. ADDRL A/D CONVERTER DATA LOW REGISTER 00DFH 7 6 5 4 3 2 1 0 ADDRL .3 .2 .1 .0 - - - - Reset value: X-H R R R R R R R R A 8-bit data register for lower 4-bits of the 12-bit ADC result. |
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