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STR730FZ1T7 数据表(PDF) 31 Page - STMicroelectronics |
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STR730FZ1T7 数据表(HTML) 31 Page - STMicroelectronics |
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31 / 52 page  STR73xFxx Electrical parameters 31/52 1. Min and max values are guaranteed by characterization, not tested in production. 2. CP represents the total capacitance between XTAL1 and XTAL2, including the shunt capacitance of the external quartz crystal as well as the total board parasitic cross-capacitance between XTAL1 track and XTAL2 track. 3. C1 represents the total capacitance between XTAL1 and ground, including the external capacitance tied to XTAL1 pin (CL) as well as the total parasitic capacitance between XTAL1 track and ground (this includes application board track capacitance to ground and device pin capacitance). 4. C2 represents the total capacitance between XTAL2 and ground, including the external capacitance tied to XTAL1 pin (CL) as well as the total parasitic capacitance between XTAL2 track and ground (this includes application board track capacitance to ground and device pin capacitance). RF 1) Feedback resistor fOSC = 4 MHz Cp2) = 10 pF C1 3) = C 2 4)= 10 pF 150 555 - Ω C1 = C2 = 20 pF 490 1035 - C1 = C2 = 30 pF 490 1030 - C1 = C2 = 40 pF 380 850 - fOSC = 5 MHz Cp = 10 pF C1 = C2 = 10 pF 160 470 - C1 = C2 = 20 pF 415 800 - C1 = C2 = 30 pF 340 735 - C1 = C2 = 40 pF 260 580 - fOSC = 6 MHz Cp = 10 pF C1 = C2 = 10 pF 160 415 - C1 = C2 = 20 pF 325 640 - C1 = C2 = 30 pF 250 550 - C1 = C2 = 40 pF 180 420 - fOSC = 7 MHz Cp = 10 pF C1 = C2 = 10 pF 160 375 - C1 = C2 = 20 pF 260 525 - C1 = C2 = 30 pF 185 420 - C1 = C2 = 40 pF 135 315 - fOSC = 8 MHz Cp = 10 pF C1 = C2 = 10 pF 155 340 - C1 = C2 = 20 pF 210 435 - C1 = C2 = 30 pF 145 335 - C1 = C2 = 40 pF 100 245 - Table 14. Main oscillator characteristics (continued) Symbol Parameter Conditions Value Unit Min Typ Max |
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