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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATtiny43U датащи(PDF) 39 Page - ATMEL Corporation |
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ATtiny43U датащи(HTML) 39 Page - ATMEL Corporation |
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39 / 182 page  39 8048B–AVR–03/09 Figure 8-4. Input and Output Voltages of Boost Converter. When input voltage V BAT falls below VSTOP the converter enters Stop Mode and output voltage V CC begins to fall. When converter output voltage, i.e. the supply voltage of the microcontroller, falls below V POT the MCU will go into reset. Figure 8-5 illustrates how the boost converter output changes with load current. As converter output voltage rises above the power-on threshold the microcontroller is brought on-line and cur- rent consumption steps up to a level sufficiently high for the converter to remain in Active Regulated Mode of operation. Figure 8-5. Output Voltage vs. Load Current of Boost Converter. Note: The figure is not to scale. Typically, the switching time (rising voltage) is measured in hundreds of microseconds and idle time (falling voltage) is measured in seconds. VCC t VPOT VSTART VBOOST VSTOP VBAT STOP STOP ACTIVE RESET ACTIVE RESET CONVERTER: MCU CORE: VCC t ILOAD V/A VCCMIN VCCMAX LOW CURRENT MODE ACTIVE, REGULATED MODE: VCCNOM IMS REGULATED |
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