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MK20DX128VLF5 Datasheet(PDF) 11 Page - Freescale Semiconductor, Inc |
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MK20DX128VLF5 Datasheet(HTML) 11 Page - Freescale Semiconductor, Inc |
11 / 60 page 5.2 Nonswitching electrical specifications 5.2.1 Voltage and current operating requirements Table 1. Voltage and current operating requirements Symbol Description Min. Max. Unit Notes VDD Supply voltage 1.71 3.6 V VDDA Analog supply voltage 1.71 3.6 V VDD – VDDA VDD-to-VDDA differential voltage –0.1 0.1 V VSS – VSSA VSS-to-VSSA differential voltage –0.1 0.1 V VBAT RTC battery supply voltage 1.71 3.6 V VIH Input high voltage • 2.7 V ≤ VDD ≤ 3.6 V • 1.7 V ≤ VDD ≤ 2.7 V 0.7 × VDD 0.75 × VDD — — V V VIL Input low voltage • 2.7 V ≤ VDD ≤ 3.6 V • 1.7 V ≤ VDD ≤ 2.7 V — — 0.35 × VDD 0.3 × VDD V V VHYS Input hysteresis 0.06 × VDD — V IICIO I/O pin DC injection current — single pin • VIN < VSS-0.3V (Negative current injection) • VIN > VDD+0.3V (Positive current injection) -3 — — +3 mA 1 IICcont Contiguous pin DC injection current —regional limit, includes sum of negative injection currents or sum of positive injection currents of 16 contiguous pins • Negative current injection • Positive current injection -25 — — +25 mA VRAM VDD voltage required to retain RAM 1.2 — V VRFVBAT VBAT voltage required to retain the VBAT register file VPOR_VBAT — V 1. All analog pins are internally clamped to VSS and VDD through ESD protection diodes. If VIN is greater than VAIO_MIN (=VSS-0.3V) and VIN is less than VAIO_MAX(=VDD+0.3V) is observed, then there is no need to provide current limiting resistors at the pads. If these limits cannot be observed then a current limiting resistor is required. The negative DC injection current limiting resistor is calculated as R=(VAIO_MIN-VIN)/|IIC|. The positive injection current limiting resistor is calcualted as R=(VIN-VAIO_MAX)/|IIC|. Select the larger of these two calculated resistances. General K20 Sub-Family Data Sheet, Rev. 4 5/2012. Freescale Semiconductor, Inc. 11 |
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