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ATmega328P Datasheet(PDF) 305 Page - ATMEL Corporation |
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ATmega328P Datasheet(HTML) 305 Page - ATMEL Corporation |
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305 / 345 page  305 7810A–AVR–11/09 ATmega328P [Preliminary] 28.2 DC Characteristics. Notes: 1. “Max” means the highest value where the pin is guaranteed to be read as low 2. “Min” means the lowest value where the pin is guaranteed to be read as high 3. Although each I/O port can sink more than the test conditions (20 mA at VCC = 5V, 10 mA at VCC = 3V) under steady state conditions (non-transient), the following must be observed: ATmega328P: 1] The sum of all IOL, for ports C0 - C5, should not exceed 100 mA. 2] The sum of all IOL, for ports B0 - B5, D5 - D7, XTAL1, XTAL2 should not exceed 100 mA. 3] The sum of all I OL, for ports D0 - D4, should not exceed 100 mA. If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test condition. 4. Although each I/O port can source more than the test conditions (20 mA at V CC = 5V, 10 mA at VCC = 3V) under steady state conditions (non-transient), the following must be observed: ATmega328P: 1] The sum of all I OH, for ports C0 - C5, D0- D4, should not exceed 150 mA. 2] The sum of all IOH, for ports B0 - B5, D5 - D7, XTAL1, XTAL2 should not exceed 150 mA. If II OH exceeds the test condition, VOH may exceed the related specification. Pins are not guaranteed to source current greater than the listed test condition. T A = -40°C to 125°C, VCC = 2.7V to 5.5V (unless otherwise noted) Symbol Parameter Condition Min. Typ. Max. Units VIL Input Low Voltage, except XTAL1 and RESET pin V CC = 2.7V - 5.5V -0.5 0.3V CC (1) V VIH Input High Voltage, except XTAL1 and RESET pins V CC = 2.7V - 5.5V 0.6V CC (2) V CC + 0.5 V VIL1 Input Low Voltage, XTAL1 pin VCC = 2.7V - 5.5V -0.5 0.1VCC (1) V VIH1 Input High Voltage, XTAL1 pin V CC = 2.7V - 5.5V 0.7V CC (2) V CC + 0.5 V VIL2 Input Low Voltage, RESET pin V CC = 2.7V - 5.5V -0.5 0.1V CC (1) V VIH2 Input High Voltage, RESET pin VCC = 2.7V - 5.5V 0.9VCC (2) VCC + 0.5 V VOL Output Low Voltage(3) IOL = 20 mA, VCC = 5V IOL = 5 mA, VCC = 3V 0.8 0.5 V VOH Output High Voltage(4) IOH = -20 mA, VCC = 5V IOH = -10 mA, VCC = 3V 4.1 2.3 V IIL Input Leakage Current I/O Pin V CC = 5.5V, pin low (absolute value) 1µA IIH Input Leakage Current I/O Pin VCC = 5.5V, pin high (absolute value) 1µA RRST Reset Pull-up Resistor 30 60 k Ω RPU I/O Pin Pull-up Resistor 20 50 k Ω VACIO Analog Comparator Input Offset Voltage 0.4V<Vin <Vcc-0.5 (absolute value) 10 40 mV IACLK Analog Comparator Input Leakage Current VCC = 5V Vin = VCC/2 -50 50 nA |
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