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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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STR750F Scheda tecnica(PDF) 44 Page - STMicroelectronics |
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STR750F Scheda tecnica(HTML) 44 Page - STMicroelectronics |
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44 / 73 page  Electrical parameters STR750F 44/71 XRTC1 external Clock source Subject to general operating conditions for VDD_IO, and TA. Figure 20. Typical application with an external Clock source Table 20. XRTC1 external Clock source Symbol Parameter Conditions(1) 1. Data based on typical application software. Min Typ Max Unit fXRTC1 External clock source frequency see Figure 20 32.768 500 kHz VXRTC1H XRTC1 input pin high level voltage 0.7xVDD_IO VDD_IO V VXRTC1L XRTC1 input pin low level voltage VSS 0.3xVDD_IO tw(XRTC1H) tw(XRTC1L) XRTC1 high or low time(2) 2. Data based on design simulation and/or technology characteristics, not tested in production. 990 ns tr(XRTC1) tf(XRTC1) XRTC1 rise or fall time(2) 5 IL XRTCx Input leakage current VSS≤VIN≤VDD_I O ±1 µA XT1 XT2 fOSC4M EXTERNAL STR750 CLOCK SOURCE VXT1L VXT1H tr(XT1) tf(XT1) tw(XT1H) tw(XT1L) IL 90% 10% TXT1 hi-Z |
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