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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PSD813F1 датащи(PDF) 73 Page - STMicroelectronics |
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PSD813F1 датащи(HTML) 73 Page - STMicroelectronics |
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73 / 110 page  73/110 PSD813F1 AC/DC PARAMETERS The following tables describe the AD and DC pa- rameters of the PSD: s DC Electrical Specification s AC Timing Specification PLD Timing – Combinatorial Timing – Synchronous Clock Mode – Asynchronous Clock Mode – Input Macrocell Timing MCU Timing – READ Timing – WRITE Timing – Peripheral Mode Timing – Power-down and Reset Timing The following are issues concerning the parame- ters presented: s In the DC specification the supply current is given for different modes of operation. Before calculating the total power consumption, determine the percentage of time that the PSD is in each mode. Also, the supply power is considerably different if the Turbo bit is ‘0.’ s The AC power component gives the PLD, EEPROM and SRAM mA/MHz specification. Figures 36 and 37 show the PLD mA/MHz as a function of the number of Product Terms (PT) used. s In the PLD timing parameters, add the required delay when Turbo bit is ‘0.' Figure 36. PLD ICC /Frequency Consumption (5V range) Figure 37. PLD ICC /Frequency Consumption (3V range) 0 10 20 30 40 60 70 80 90 100 110 VCC = 5V 50 010 15 5 20 25 HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz) TURBO ON (100%) TURBO ON (25%) TURBO OFF PT 100% PT 25% AI02894 0 10 20 30 40 50 60 VCC = 3V 010 15 5 20 25 TURBO ON (100%) TURBO ON (25%) TURBO OFF HIGHEST COMPOSITE FREQUENCY AT PLD INPUTS (MHz) PT 100% PT 25% AI03100 |
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