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MK22DX256VLF5 Datasheet(PDF) 11 Page - Freescale Semiconductor, Inc |
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MK22DX256VLF5 Datasheet(HTML) 11 Page - Freescale Semiconductor, Inc |
11 / 55 page 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. 5.2.2 LVD and POR operating requirements Table 2. VDD supply LVD and POR operating requirements Symbol Description Min. Typ. Max. Unit Notes VPOR Falling VDD POR detect voltage 0.8 1.1 1.5 V Table continues on the next page... General K22 Sub-Family Data Sheet Data Sheet, Rev. 3, 08/2012. Freescale Semiconductor, Inc. 11 |
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