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C161PI 数据表(PDF) 51 Page - Infineon Technologies AG |
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C161PI 数据表(HTML) 51 Page - Infineon Technologies AG |
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51 / 82 page ![]() &3, Data Sheet 49 1999-07 AC Characteristics AC Characteristics External Clock Drive XTAL1 (Standard Supply Voltage Range) (Operating Conditions apply) Parameter Symbol Direct Drive 1:1 Prescaler 2:1 PLL 1:N Unit min. max. min. max. min. max. Oscillator period W OSC SR 40 – 20 – 60 1) 1) The minimum and maximum oscillator periods for PLL operation depend on the selected CPU clock generation mode. Please see respective table above. 500 1) ns High time 2) 2) The clock input signal must reach the defined levels 9 IL and 9IH2. W 1 SR 20 3) 3) The minimum high and low time refers to a duty cycle of 50%. The maximum operating frequency ( I CPU) in direct drive mode depends on the duty cycle of the clock input signal. –6–10 – ns Low time 2) W 2 SR 20 3) –6–10 – ns Rise time 2) W 3 SR –10 –6–10 ns Fall time 2) W 4 SR –10 –6–10 ns External Clock Drive XTAL1 (Reduced Supply Voltage Range) (Operating Conditions apply) Parameter Symbol Direct Drive 1:1 Prescaler 2:1 PLL 1:N Unit min. max. min. max. min. max. Oscillator period W OSC SR 50 – 25 – 60 1) 1) The minimum and maximum oscillator periods for PLL operation depend on the selected CPU clock generation mode. Please see respective table above. 500 1) ns High time 2) 2) The clock input signal must reach the defined levels 9 IL and 9IH2. W 1 SR 25 3) 3) The minimum high and low time refers to a duty cycle of 50%. The maximum operating frequency ( I CPU) in direct drive mode depends on the duty cycle of the clock input signal. –8–10 – ns Low time 2) W 2 SR 25 3) –8–10 – ns Rise time 2) W 3 SR –10 –6–10 ns Fall time 2) W 4 SR –10 –6–10 ns |
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