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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STR750FV0 датащи(PDF) 44 Page - STMicroelectronics |
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STR750FV0 датащи(HTML) 44 Page - STMicroelectronics |
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44 / 84 page  Electrical parameters STR750Fxx STR751Fxx STR752Fxx STR755Fxx 44/84 5.3.5 Clock and timing characteristics XT1 external clock source Subject to general operating conditions for VDD_IO, and TA. Table 20. XT1 external clock source Symbol Parameter Conditions(1) (2) 1. Data based on typical application software. 2. Time measured between interrupt event and interrupt vector fetch. ∆tc(INST) is the number of tCPU cycles needed to finish the current instruction execution. Min Typ Max Unit fXT1 External clock source frequency see Figure 20 460 MHz VXT1H XT1 input pin high level voltage 0.7xVDD_IO VDD_IO V VXT1L XT1 input pin low level voltage VSS 0.3xVDD_IO tw(XT1H) tw(XT1L) XT1 high or low time (3) 3. Data based on design simulation and/or technology characteristics, not tested in production. 6 ns tr(XT1) tf(XT1) XT1 rise or fall time (3) 20 IL XTx Input leakage current VSS ≤ VIN ≤ VDD_IO ±1 µA CIN(XT1) XT1 input capacitance(3) 5pF DuCy(XT1) Duty cycle 45 55 % |
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