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ATMEGA64-16AI Datasheet(PDF) 52 Page - ATMEL Corporation |
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ATMEGA64-16AI Datasheet(HTML) 52 Page - ATMEL Corporation |
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52 / 393 page  52 ATmega64(L) 2490L–AVR–10/06 Figure 22. Reset Logic Table 19. Reset Characteristics Symbol Parameter Condition Min Typ Max Units VPOT Power-on Reset Threshold Voltage (rising) 1.4 2.3 V Power-on Reset Threshold Voltage (falling) (1) 1.3 2.3 V VRST RESET Pin Threshold Voltage 0.2 VCC 0.85 VCC V tRST Minimum pulse width on RESET Pin 1.5 µs VBOT Brown-out Reset Threshold Voltage(2) BODLEVEL = 1 2.5 2.7 2.9 V BODLEVEL = 0 3.6 4.0 4.2 tBOD Minimum low voltage period for Brown-out Detection BODLEVEL = 1 2 µs BODLEVEL = 0 2 µs VHYST Brown-out Detector hysteresis 120 mV MCU Control and Status Register (MCUCSR) Brown-Out Reset Circuit BODEN BODLEVEL Delay Counters CKSEL[3:0] CK TIMEOUT DATA BUS Clock Generator SPIKE FILTER Pull-up Resistor JTAG Reset Register Watchdog Oscillator SUT[1:0] Watchdog Timer RESET Pull-up Resistor PEN Reset Circuit L DQ Q Power-On Reset Circuit |
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