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PIC16LC71-04/P датащи(PDF) 38 Page - Microchip Technology |
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PIC16LC71-04/P датащи(HTML) 38 Page - Microchip Technology |
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38 / 176 page ![]() PIC16C71X DS30272A-page 38 © 1997 Microchip Technology Inc. FIGURE 7-2: ADCON0 REGISTER (ADDRESS 1Fh), PIC16C715 FIGURE 7-3: ADCON1 REGISTER, PIC16C710/71/711 (ADDRESS 88h), PIC16C715 (ADDRESS 9Fh) R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 R/W-0 ADCS1 ADCS0 — CHS1 CHS0 GO/DONE — ADON 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/2 01 = FOSC/8 10 = FOSC/32 11 = FRC (clock derived from an RC oscillation) bit 5: Unused bit 6-3: CHS1:CHS0: Analog Channel Select bits 000 = channel 0, (RA0/AN0) 001 = channel 1, (RA1/AN1) 010 = channel 2, (RA2/AN2) 011 = channel 3, (RA3/AN3) 100 = channel 0, (RA0/AN0) 101 = channel 1, (RA1/AN1) 110 = channel 2, (RA2/AN2) 111 = channel 3, (RA3/AN3) bit 2: GO/DONE: A/D Conversion Status bit If ADON = 1 1 = A/D conversion in progress (setting this bit starts the A/D conversion) 0 = A/D conversion not in progress (This bit is automatically cleared by hardware when the A/D conver- sion is complete) bit 1: Unimplemented: Read as '0' bit 0: ADON: A/D On bit 1 = A/D converter module is operating 0 = A/D converter module is shutoff and consumes no operating current U-0 U-0 U-0 U-0 U-0 U-0 R/W-0 R/W-0 — — — — — — PCFG1 PCFG0 R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’ - n =Value at POR reset bit7 bit0 bit 7-2: Unimplemented: Read as '0' bit 1-0: PCFG1:PCFG0: A/D Port Configuration Control bits A = Analog input D = Digital I/O PCFG1:PCFG0 RA1 & RA0 RA2 RA3 VREF 00 A A A VDD 01 A A VREF RA3 10 A D D VDD 11 D D D VDD |
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