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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC5607B датащи(PDF) 41 Page - Freescale Semiconductor, Inc |
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MPC5607B датащи(HTML) 41 Page - Freescale Semiconductor, Inc |
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41 / 110 page  Electrical characteristics MPC5607B Microcontroller Data Sheet, Rev. 6 Freescale Semiconductor 41 K is a constant for the particular part, which may be determined from Equation 3 by measuring PD (at equilibrium) for a known TA. Using this value of K, the values of PD and TJ may be obtained by solving equations 1 and 2 iteratively for any value of TA. 4.6 I/O pad electrical characteristics 4.6.1 I/O pad types The device provides four main I/O pad types depending on the associated alternate functions: • Slow pads—are the most common pads, providing a good compromise between transition time and low electromagnetic emission. • Medium pads—provide transition fast enough for the serial communication channels with controlled current to reduce electromagnetic emission. • Fast pads—provide maximum speed. These are used for improved Nexus debugging capability. • Input only pads—are associated with ADC channels and 32 kHz low power external crystal oscillator providing low input leakage. Medium and Fast pads can use slow configuration to reduce electromagnetic emission, at the cost of reducing AC performance. 4.6.2 I/O input DC characteristics Table 15 provides input DC electrical characteristics as described in Figure 6. Figure 6. I/O input DC electrical characteristics definition VIL VIN VIH PDIx = ‘1 VDD VHYS (GPDI register of SIUL) PDIx = ‘0’ |
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