DC Characteristics

Table 1. Common DC characteristics TA = -40°C to 125°C, VCC = 1.8V to 5.5V (unless otherwise noted)
Symbol Parameter Condition Min. Typ.(1) Max. Units
VIL Input Low Voltage, except XTAL1 and RESET pin VCC = 1.8V - 2.4V
 -0.5
   0.2VCC(2) V
VCC = 2.4V - 5.5V -0.5   0.3VCC(2)


VIH Input High Voltage, except XTAL1 and RESET pins VCC = 1.8V - 2.4V
 0.7VCC(3)
   VCC + 0.5
 V
VCC = 2.4V - 5.5V 0.6VCC(3)
   VCC + 0.5
VIL1 Input Low Voltage,
CLKI pin VCC = 1.8V - 5.5V -0.5   0.1VCC(2)

 V
VIH1 Input High Voltage,CLKI pin VCC = 1.8V - 2.4V
 0.8VCC(3)
   VCC + 0.5
 V
VCC = 2.4V - 5.5V 0.7VCC(3)
   VCC + 0.5
VIL2 Input Low Voltage, 
RESET pin VCC = 1.8V - 5.5V -0.5   0.1VCC(2) V
VIH2 Input High Voltage, 
RESET pin VCC = 1.8V - 5.5V 0.9VCC(3)
   VCC + 0.5 V
VIL3 Input Low Voltage, 
RESET pin as I/O VCC = 1.8V - 2.4V
 -0.5
   0.2VCC(2) V
VCC = 2.4V - 5.5V -0.5   0.3VCC(2)
VIH3 Input High Voltage, 
RESET pin as I/O VCC = 1.8V - 2.4V
 0.7VCC(3)
   VCC + 0.5
 V
VCC = 2.4V - 5.5V 0.6VCC(3)
   VCC + 0.5
VOL Output Low Voltage(4)
except RESET pin(6)

IOL = 10mA,          VCC = 5V

    0.6 V

IOL = 5mA,             VCC = 3V

    0.5
VOH Output High Voltage(5)
except Reset pin(6)

IOH = 10mA,        VCC = 5V

4.3     V

IOH = 5mA,          VCC = 3V

2.5    
IIL Input Leakage
 Current I/O Pin VCC = 5.5V, pin low
(absolute value)   <0.05 1 μA
IIH Input Leakage
 Current I/O Pin VCC = 5.5V, pin high
(absolute value)   <0.05 1 μA
RRST Reset Pull-up Resistor VCC = 5.5V, input low 30   60
RPU I/O Pin Pull-up Resistor VCC = 5.5V, input low 20   50
IACLK Analog Comparator 
Input Leakage Current

VCC=5V
,

Vin = VCC/2

-50   50 nA
ICC Power Supply Current(7) Active 1MHz, VCC = 2V   0.2 0.5 mA
Active 4MHz, VCC = 3V   1.1 1.2 mA
Active 8MHz, VCC = 5V   3.2 4 mA
Idle 1MHz, VCC = 2V   0.03 0.2 mA
Idle 4MHz, VCC = 3V   0.2 0.5 mA
Idle 8MHz, VCC = 5V   0.9 1.5 mA
Power-down mode(8) WDT enabled, Vcc =3V TA=105°C   5.5 10 μA
TA=125°C   5.5 16 μA
WDT disabled, Vcc =3V TA=105°C   0.11 2 μA
TA=125°C   0.11 8 μA
Note:
  1. Typical values at 25°C, maximum values unless otherwise noted.
  2. “Max” means the highest value where the pin is guaranteed to be read as low.
  3. “Min” means the lowest value where the pin is guaranteed to be read as high.
  4. Although each I/O port can sink more than the test conditions (10 mA at VCC = 5V, 5 mA at VCC = 3V) under steady state conditions (non-transient), the sum of all IOL (for all ports) should not exceed 60 mA. If IOL exceeds the test conditions, VOL may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test condition.
  5. Although each I/O port can source more than the test conditions (10 mA at VCC = 5V, 5 mA at VCC = 3V) under steady state conditions (non-transient), the sum of all IOH (for all ports) should not exceed 60 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.
  6. The RESET pin must tolerate high voltages when entering and operating in programming modes and, as a consequence, has a weak drive strength as compared to regular I/O pins.
  7. Values are with external clock using methods described in Minimizing Power Consumption. Power Reduction is enabled (PRR = 0xFF) and there is no I/O drive.
  8. BOD Disabled.