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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC17C752-08/CL датащи(PDF) 178 Page - Microchip Technology |
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PIC17C752-08/CL датащи(HTML) 178 Page - Microchip Technology |
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178 / 328 page  PIC17C7XX DS30289A-page 178 © 1998 Microchip Technology Inc. FIGURE 16-2: ADCON1 REGISTER (ADDRESS 15h, BANK 5) R/W-0 R/W-0 R/W-0 U-0 R/W-0 R/W-0 R/W-0 R/W-0 ADCS1 ADCS0 ADFM — PCFG3 PCFG2 PCFG1 PCFG0 R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ - n = Value at POR reset bit7 bit0 bit 7-6: ADCS1:ADCS0: A/D Conversion Clock Select bits 00 = FOSC/8 01 = FOSC/32 10 = FOSC/64 11 = FRC (clock derived from an internal RC oscillator) bit 5: ADFM: A/D Result format select 1 = Right justified. 6 Most Significant bits of ADRESH are read as ’0’. 0 = Left justified. 6 Least Significant bits of ADRESL are read as ’0’. bit 4: Unimplemented: Read as '0' bit 3-1: PCFG3:PCFG1: A/D Port Configuration Control bits bit 0: PCFG0: A/D Voltage Reference Select bit 1 = A/D reference is the VREF+ and VREF- pins 0 = A/D reference is AVDD and AVSS Note:When this bit is set, ensure that the A/D voltage reference specifications are met. A = Analog input D = Digital I/O PCFG3:PCFG 1 AN15 AN14 AN13 AN12 AN11 AN10 AN9 AN8 AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0 000 AAAAAA AAAAAAAAAA 001 D AAAAA A A D AAAAAAA 010 D D AAAA A A D D AAAAAA 011 D D D A A A AA D D D AAAAA 100 DDDD A A A A DDDD AAAA 101 DDDDD A A A DDDDD A A A 110 DDDDDD A A DDDDDD A A 111 DDDDDD DDDDDDDDDD |
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