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HCS08 Folha de dados(PDF) 178 Page - NXP Semiconductors |
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HCS08 Folha de dados(HTML) 178 Page - NXP Semiconductors |
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178 / 198 page ![]() Appendix A Electrical Characteristics MC9S08QD4 Series MCU Data Sheet, Rev. 6 178 Freescale Semiconductor Figure A-1. Typical Low-Side Driver (Sink) Characteristics Low Drive (PTxDSn = 0), VDD = 5.0V, VOL vs. IOL Figure A-2. Typical Low-Side Driver (Sink) Characteristics Low Drive (PTxDSn = 0), VDD = 3.0 V, VOL vs. IOL 7 Power supply must maintain regulation within operating V DD range during instantaneous and operating maximum current conditions. If positive injection current (VIn > VDD) is greater than IDD, the injection current may flow out of VDD and could result in external power supply going out of regulation. Ensure external VDD load will shunt current greater than maximum injection current. This will be the greatest risk when the MCU is not consuming power. Examples are: if no system clock is present, or if clock rate is very low (which would reduce overall power consumption). 14 12 10 8 6 4 2 0 0 0.4 0.8 1.2 1.6 22.4 2.8 VOL/V –40 0 25 85 125 Typical Low-side Driver (LDS) Characteristics, VDD = 5.0 V, PORTA 105 –40 25 85 105 –1.6 1.2 1 1.4 0.8 0.6 0.4 0.2 0 VOL/V 0 1 2 3 4 5 6 Typical Low-side Driver (LDS) Characteristics, VDD = 3.0 V, PORTA 0 125 |
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