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ATmega32U2 Datasheet(PDF) 265 Page - ATMEL Corporation |
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ATmega32U2 Datasheet(HTML) 265 Page - ATMEL Corporation |
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265 / 314 page  265 7799B–AVR–07/09 ATmega8U2/16U2/32U2 Note: 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 (20mA at VCC = 5V, 10mA at VCC = 3V) under steady state conditions (non-transient), the following must be observed: 1.)The sum of all IOL, for ports B0-B7, C0-C7, D0-D7 should not exceed 150 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 (20mA at VCC = 5V, 10mA at VCC = 3V) under steady state conditions (non-transient), the following must be observed: 1.)The sum of all IOL, for ports B0-B7, C0-C7, D0-D7 should not exceed 150 mA. If IOH exceeds the test condition, VOH may exceed the related specification. Pins are not guaranteed to source current greater than the listed test condition. 5. All DC Characteristics contained in this datasheet are based on simulation and characterization of other AVR microcon- trollers manufactured in the same process technology. These values are preliminary values representing design targets, and will be updated after characterization of actual silicon 6. Values with “PRR1 – Power Reduction Register 1” disabled (0x00). 7. As specified in the USB Electrical chapter, the D+/D- pads can withstand voltages down to -1V applied through a 39 Ω resis- tor (in series with the external 39 Ω resistor). 8. All IOs Except XTAL1 and Reset pins RPUDP USD D+ Internal Pull-Up 900 1500 Ω ICC Power Supply Current(6) Active 8MHz, VCC = 3V 7 8.5 mA Active 16MHz, VCC = 5V 13.5 25 mA Idle 8MHz, VCC = 3V 3.5 mA Idle 16MHz, VCC = 5V 4 4.5 mA Power-down mode WDT disabled, Regulator Disabled,VCC = 3V 510 µA WDT enabled, Regulator Disabled,VCC = 3V 10 15 µA WDT, BOD, Regulator Enabled, Vcc = 5V 41 65 µA Standby mode WDT, BOD Enabled, Regulator Disabled, Vcc = 3V 70 100 µA WDT, BOD, Regulator Enabled, Vcc = 5V 120 150 µA VACIO Analog Comparator Input Offset Voltage VCC = 5V Vin = VCC/2 <10 40 mV IACLK Analog Comparator Input Leakage Current VCC = 5V Vin = VCC/2 -50 50 nA tACID Analog Comparator Propagation Delay VCC = 2.7V VCC = 4.0V 750 500 ns Rusb USB Series resistor (external) 22±5% Ω Vreg Regulator Output Voltage Vcc 4.0V, I ≤100mA, C UCAP=1µF±20% 3.0 3.3 3.6 V T A = -40°C to 85°C, VCC = 2.7V to 5.5V (unless otherwise noted) (Continued) Symbol Parameter Condition Min.(5) Typ. Max.(5) Units |
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