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PIC12CE67X датащи(PDF) 97 Page - Microchip Technology |
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PIC12CE67X датащи(HTML) 97 Page - Microchip Technology |
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97 / 116 page ![]() © 1998 Microchip Technology Inc. Preliminary DS40181B-page 97 PIC12CE67X FIGURE 12-6: A/D CONVERSION TIMING TABLE 12-10: A/D CONVERSION REQUIREMENTS Parameter No. Sym Characteristic Min Typ† Max Units Conditions 130 TAD A/D clock period 1.6 2.0 — — µs µs VREF ≥ 3.0V VREF full range 130 TAD A/D Internal RC Oscillator source 3.0 6.0 9.0 µs ADCS1:ADCS0 = 11 (RC oscillator source) PIC12LCE67X, VDD = 3.0V 2.0 4.0 6.0 µs PIC12CE67X 131 TCNV Conversion time (not including S/H time). Note 1 — 9.5TAD — — 132 TACQ Acquisition time Note 2 20 — µs * These parameters are characterized but not tested. † Data in “Typ” column is at 5V, 25 °C unless otherwise stated. These parameters are for design guidance only and are not tested. Note 1: ADRES register may be read on the following TCY cycle. 131 130 132 BSF ADCON0, GO Q4 A/D CLK A/D DATA ADRES ADIF GO SAMPLE OLD_DATA SAMPLING STOPPED DONE NEW_DATA (TOSC/2) (1) 7 6 5 4 3 2 1 0 Note 1: If the A/D clock source is selected as RC, a time of TCY is added before the A/D clock starts. This allows the SLEEP instruction to be executed. 1 Tcy |
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