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ATMEGA329P Folha de dados(PDF) 45 Page - ATMEL Corporation |
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ATMEGA329P Folha de dados(HTML) 45 Page - ATMEL Corporation |
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45 / 385 page ![]() 45 8021E–AVR–07/09 ATmega329P/3290P Figure 10-2. MCU Start-up, RESET Tied to V CC Figure 10-3. MCU Start-up, RESET Extended Externally 10.2.2 External Reset An External Reset is generated by a low level on the RESET pin. Reset pulses longer than the minimum pulse width (see ”System and Reset Characteristics” on page 330) will generate a reset, even if the clock is not running. Shorter pulses are not guaranteed to generate a reset. When the applied signal reaches the Reset Threshold Voltage – V RST – on its positive edge, the delay counter starts the MCU after the Time-out period – t TOUT – has expired. Figure 10-4. External Reset During Operation V RESET TIME-OUT INTERNAL RESET t TOUT V POT V RST CC RESET TIME-OUT INTERNAL RESET t TOUT V POT V RST VCC CC |
Nº de peça semelhante - ATMEGA329P_1 |
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Descrição semelhante - ATMEGA329P_1 |
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