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ST8024CDR Fiches technique(PDF) 9 Page - STMicroelectronics |
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ST8024CDR Fiches technique(HTML) 9 Page - STMicroelectronics |
9 / 30 page ST8024 Electrical characteristics 9/30 Table 8. Crystal connection (pins XTAL1 and XTAL2) (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical values are to TA = 25°C) Symbol Parameter Test Conditions Min. Typ. Max. Unit CXTAL1,2 External capacitance on pins XTAIL1, XTAIL2 Depends on type of crystal or resonator used 15 pF fXTAL Crystal Frequency 2 26 MHz fXTAL1 Frequency applied on pin XTAL1 026 MHz VIH High level input voltage on pin XTAIL1 0.7 VDD VDD+0.3 V VIL Low level input voltage on pin XTAIL1 -0.3 +0.3VDD V Table 9. Data Lines (PINS I/O, I/OUC, AUX1, AUX2, AUX1UC AND AUX2UC) (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical values are to TA = 25°C) Symbol Parameter Test Conditions Min. Typ. Max. Unit tD(I/O-I/OUC), tD(I/OUC-I/O) I/O to I/OUC, I/OUC to I/O falling edge delay 200 ns tpu Active pull-up pulse width 100 ns fI/O(MAX) Maximum frequency on data lines 1 MHz CI Input capacitance on data lines 10 pF Table 10. Data lines to card reader (pins I/O, AUX1 AND AUX2 with integrated 11k Ω Pull-up resistor to VCC (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical values are to TA = 25°C) Symbol Parameter Test Conditions Min. Typ. Max. Unit VO(inactive) Output Voltage Inactive mode NO LOAD 0 0.1 V IO(inactive)=1mA 0.3 IO(inactive) Output Current Inactive mode; pin grounded -1 mA VOH High Level Output Voltage No DC Load 0.9 VCC VCC+0.1 V 5 and 3 V cards; IOH < - 40µA 0.75 VCC VCC+0.1 |IOH| ≥ 10mA 0 0.4 VOL Low Level Output Voltage IOL = 1 mA 0 0.2 V IOL ≥ 15 mA VCC-0.4 VCC VIH High Level Input Voltage 1.5 VCC+0.3 V VIL Low Level Input Voltage 0.3 0.8 V |ILIH| High Level Input Leakage Current VIH = VCC 10 µA |IIL| Low Level Input Current VIL = 0 V 600 µA RPU Integrated pull-up resistor Pull-up resistor to VCC 911 13 k Ω |
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