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65 page 
PRELIMINARY PSoC® 5: CY8C55 Family Datasheet Document Number: 001-66235 Rev. *A Page 65 of 114 11.4 Inputs and Outputs Specifications are valid for –40 °C ≤ T A ≤ 85 °C and TJ ≤ 100 °C, except where noted. Specifications are valid for 2.7 V to 5.5 V, except where noted. Unless otherwise specified, all charts and graphs show typical values. 11.4.1 GPIO Note 22. Based on device characterization (Not production tested). Table 11-8. Recommended External Components for Boost Circuit Parameter Description Conditions Min Typ Max Units LBOOST Boost inductor 4.7 10 47 µH CBOOST Filter capacitor[22] 10 22 47 µF IF External Schottky diode average forward current External Schottky diode is required for VOUT > 3.6 V 1 – – A VR 20 – – V Table 11-9. GPIO DC Specifications Parameter Description Conditions Min Typ Max Units VIH Input voltage high threshold CMOS Input, PRT[x]CTL = 0 0.7 × V DDIO –– V VIL Input voltage low threshold CMOS Input, PRT[x]CTL = 0 – – 0.3 × VDDIO V VIH Input voltage high threshold LVTTL Input, PRT[x]CTL = 1 2.0 – – V VIL Input voltage low threshold LVTTL Input, PRT[x]CTL = 1 – – 0.8 V VOH Output voltage high IOH = 4 mA at 3.3 VDDIO VDDIO – 0.6 – – V VOL Output voltage low IOL = 8 mA at 3.3 VDDIO –– 0.6 V Rpullup Pull-up resistor 3.5 5.6 8.5 k Ω Rpulldown Pull-down resistor 3.5 5.6 8.5 k Ω IIL Input leakage current (absolute value)[22] 25 °C, VDDIO = 3.0 V – – 2 nA CIN Input capacitance[22] GPIOs without opamp outputs – – 7 pF GPIOs with opamp outputs – – 18 pF VH Input voltage hysteresis (Schmitt-Trigger)[22] –40 – mV Idiode Current through protection diode to VDDIO and VSSIO –– 100 µA Rglobal Resistance pin to analog global bus 25 °C, VDDIO = 3.0 V – 320 – Ω Rmux Resistance pin to analog mux bus 25 °C, VDDIO = 3.0 V – 220 – Ω |
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