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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC5646C датащи(PDF) 77 Page - Freescale Semiconductor, Inc |
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MPC5646C датащи(HTML) 77 Page - Freescale Semiconductor, Inc |
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77 / 114 page  MPC5646C Microcontroller Data Sheet, Rev. 3 Preliminary—Subject to Change Without Notice Freescale Semiconductor 77 From this formula, in the worst case (when VA is maximum, that is for instance 5 V), assuming to accept a maximum error of half a count, a constraint is evident on CF value: ADC_0 (10-bit) Eqn. 12 ADC_1 (12-bit) Eqn. 13 4.17.1.2 ADC electrical characteristics NOTE All ADC conversion characteristics described in the table below are applicable only for the precision channels. The data for semi-precision and extended channels is awaited and same will be subsequently updated in later revs. Table 41. ADC input leakage current Symbol C Parameter Conditions Value Unit Min Typ Max ILKG CC C Input leakage current TA = 40 °C No current injection on adjacent pin — 1 — nA CTA = 25 °C — 1 — CTA = 105 °C — 8 200 PTA = 125 °C — 45 400 Table 42. ADC conversion characteristics (10-bit ADC_0) Symbol C Parameter Conditions1 Value Unit Min Typ Max VSS_ADC0 SR — Voltage on VSS_HV_ADC0 (ADC_0 reference) pin with respect to ground (VSS_HV) 2 — 0.1 — 0.1 V VDD_ADC0 SR — Voltage on VDD_HV_ADC0 pin (ADC_0 reference) with respect to ground (VSS_HV) —VDD_HV_A 0.1 — VDD_HV_A +0.1 V VAINx SR — Analog input voltage3 —VSS_ADC0 0.1 — VDD_ADC0 +0.1 V fADC0 SR — ADC_0 analog frequency — 6— 32 + 2% MHz tADC0_PU SR — ADC_0 power up delay — —— 1.5 µs CF 2048 CS CF 8192 CS |
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