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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MB91F577CPMC датащи(PDF) 117 Page - Cypress Semiconductor |
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MB91F577CPMC датащи(HTML) 117 Page - Cypress Semiconductor |
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117 / 163 page  Document Number: 002-04725 Rev.*A Page 117 of 163 MB91570 Series Guaranteed operation range Internal operation clock frequency vs. Power supply voltage Note: The CPU will be reset at the power supply voltage 4V±0.3V or less. Oscillation clock frequency vs. Internal operation clock frequency Internal operation clock frequency Main Clock PLL clock Multiplied by 1 Multiplied by 2 Multiplied by 3 Multiplied by 4 ... Multiplied by 19 Multiplied by 20 Oscillation clock frequency 4MHz 2MHz 4MHz 8MHz 12MHz 16MHz ... 76MHz 80MHz Example of oscillation circuit Note: As to the product with its clock supervisor’s initial value is ”ON”, when the oscillator is unable to start within 20ms from the stop state the clock supervisor will detect the oscillation stop. As a result, the CPU moves to the fail safe operation. Design your printed circuit board so that the oscillator can start oscillation within 20ms. X1 X0 R=0 C2=10pF C1=10pF 4MHz |
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