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PIC16F84A Datasheet(PDF) 126 Page - Microchip Technology |
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PIC16F84A Datasheet(HTML) 126 Page - Microchip Technology |
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126 / 337 page  PIC16C6X DS30234D-page 126 © 1997 Microchip Technology Inc. TABLE 13-1: CERAMIC RESONATORS PIC16C61 TABLE 13-2: CERAMIC RESONATORS PIC16C62/62A/R62/63/R63/64/ 64A/R64/65/65A/R65/66/67 Ranges Tested: Mode Freq OSC1 OSC2 XT 455 kHz 2.0 MHz 4.0 MHz 47 - 100 pF 15 - 68 pF 15 - 68 pF 47 - 100 pF 15 - 68 pF 15 - 68 pF HS 8.0 MHz 16.0 MHz 15 - 68 pF 10 - 47 pF 15 - 68 pF 10 - 47 pF These values are for design guidance only. See notes at bottom of page. Resonators Used: 455 kHz Panasonic EFO-A455K04B ± 0.3% 2.0 MHz Murata Erie CSA2.00MG ± 0.5% 4.0 MHz Murata Erie CSA4.00MG ± 0.5% 8.0 MHz Murata Erie CSA8.00MT ± 0.5% 16.0 MHz Murata Erie CSA16.00MX ± 0.5% All resonators used did not have built-in capacitors. Ranges Tested: Mode Freq OSC1 OSC2 XT 455 kHz 2.0 MHz 4.0 MHz 68 - 100 pF 15 - 68 pF 15 - 68 pF 68 - 100 pF 15 - 68 pF 15 - 68 pF HS 8.0 MHz 16.0 MHz 10 - 68 pF 10 - 22 pF 10 - 68 pF 10 - 22 pF These values are for design guidance only. See notes at bottom of page. Resonators Used: 455 kHz Panasonic EFO-A455K04B ± 0.3% 2.0 MHz Murata Erie CSA2.00MG ± 0.5% 4.0 MHz Murata Erie CSA4.00MG ± 0.5% 8.0 MHz Murata Erie CSA8.00MT ± 0.5% 16.0 MHz Murata Erie CSA16.00MX ± 0.5% All resonators used did not have built-in capacitors. TABLE 13-3: CAPACITOR SELECTION FOR CRYSTAL OSCILLATOR FOR PIC16C61 TABLE 13-4: CAPACITOR SELECTION FOR CRYSTAL OSCILLATOR FOR PIC16C62/62A/R62/63/ R63/64/64A/R64/65/65A/R65/ 66/67 Mode Freq OSC1 OSC2 LP 32 kHz 200 kHz 33 - 68 pF 15 - 47 pF 33 - 68 pF 15 - 47 pF XT 100 kHz 500 kHz 1 MHz 2 MHz 4 MHz 47 - 100 pF 20 - 68 pF 15 - 68 pF 15 - 47 pF 15 - 33 pF 47 - 100 pF 20 - 68 pF 15 - 68 pF 15 - 47 pF 15 - 33 pF HS 8 MHz 20 MHz 15 - 47 pF 15 - 47 pF 15 - 47 pF 15 - 47 pF These values are for design guidance only. See notes at bottom of page. Osc Type Crystal Freq Cap. Range C1 Cap. Range C2 LP 32 kHz 33 pF 33 pF 200 kHz 15 pF 15 pF XT 200 kHz 47-68 pF 47-68 pF 1 MHz 15 pF 15 pF 4 MHz 15 pF 15 pF HS 4 MHz 15 pF 15 pF 8 MHz 15-33 pF 15-33 pF 20 MHz 15-33 pF 15-33 pF These values are for design guidance only. See notes at bottom of page. Crystals Used 32 kHz Epson C-001R32.768K-A ± 20 PPM 200 kHz STD XTL 200.000KHz ± 20 PPM 1 MHz ECS ECS-10-13-1 ± 50 PPM 4 MHz ECS ECS-40-20-1 ± 50 PPM 8 MHz EPSON CA-301 8.000M-C ± 30 PPM 20 MHz EPSON CA-301 20.000M-C ± 30 PPM Note 1: Recommended values of C1 and C2 are identical to the ranges tested Table 13-1 and Table 13-2. 2: Higher capacitance increases the stability of oscillator but also increases the start-up time. 3: Since each resonator/crystal has its own characteristics, the user should consult the resonator/crystal man- ufacturer for appropriate values of external components. 4: Rs may be required in HS mode as well as XT mode to avoid overdriving crystals with low drive level speci- fication. |
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