DC Characteristics

Table 1. Common DC characteristics T_A = -40°C to 105°C, V_CC = 1.8V to 5.5V (unless otherwise noted) (Continued)
Symbol	Parameter	Condition		Min.	Typ.	Max.	Units
V_IL	Input Low Voltage, except XTAL1 and RESET pin	V_CC = 1.8V - 2.4V		-0.5		0.2V_CC⁽¹⁾	V
V_IL	Input Low Voltage, except XTAL1 and RESET pin	V_CC = 2.4V - 5.5V		-0.5		0.3V_CC⁽¹⁾	V
V_IH	Input High Voltage, except XTAL1 and RESET pins	V_CC = 1.8V - 2.4V		0.7V_CC⁽²⁾		V_CC + 0.5	V
V_IH	Input High Voltage, except XTAL1 and RESET pins	V_CC = 2.4V - 5.5V		0.6V_CC⁽²⁾		V_CC + 0.5	V
V_IL1	Input Low Voltage,  XTAL1 pin	V_CC = 1.8V - 5.5V		-0.5		0.1V_CC⁽¹⁾	V
V_IH1	Input High Voltage,  XTAL1 pin	V_CC = 1.8V - 2.4V		0.8V_CC⁽²⁾		V_CC + 0.5	V
V_IH1	Input High Voltage,  XTAL1 pin	V_CC = 2.4V - 5.5V		0.7V_CC⁽²⁾		V_CC + 0.5	V
V_OL	Output Low Voltage⁽⁴⁾ except RESET pin	I_OL = 20mA, V_CC = 5V	T_A=85°C			0.9	V
		I_OL = 20mA, V_CC = 5V	T_A=105°C			1.0
		I_OL = 10mA, V_CC = 3V	T_A=85°C			0.6
		I_OL = 10mA, V_CC = 3V	T_A=105°C			0.7
V_OH	Output High Voltage⁽³⁾ except Reset pin	I_OH = 20mA, V_CC = 5V	T_A=85°C	4.0			V
		I_OH = 20mA, V_CC = 5V	T_A=105°C	3.9
		I_OH = 10mA, V_CC = 3V	T_A=85°C	2.1
		I_OH = 10mA, V_CC = 3V	T_A=105°C	2.0
I_IL	Input Leakage Current I/O Pin	V_CC = 5.5V, pin low (absolute value)				1	μA
I_IH	Input Leakage Current I/O Pin	V_CC = 5.5V, pin high (absolute value)				1	μA
R_RST	Reset Pull-up Resistor			20		70	kΩ
R_PU	I/O Pin Pull-up Resistor			20		50	kΩ
V_ACIO	Analog Comparator  Input Offset Voltage	V_CC = 1.8-5V, 0V<V_in<V_CC-0.1V			<10	40	mV
I_ACLK	Analog Comparator  Input Leakage Current	V_CC=5V , V_in = V_CC/2		-100		100	nA
t_ACID	Analog Comparator  Propagation Delay				400		ns

Note:

“Max.” means the highest value where the pin is guaranteed to be read as low.
“Min.” means the lowest value where the pin is guaranteed to be read as high.
Although each I/O port can source more than the test conditions (20mA at V_CC = 5V, 10mA at V_CC = 3V) under steady state conditions (non-transient), the following must be observed: 
1. The sum of all I_OH, for ports PA0-PA7, PE4 should not exceed 100mA. 
2. The sum of all I_OH, for ports PC0-7, PD0-7, PE0-3 should not exceed 100mA. 
3. The sum of all I_OH, for ports RESET, PB0-7, PE5-6 should not exceed 100mA. 
  If II_OH exceeds the test condition, V_OH may exceed the related specification. Pins are not guaranteed to source current greater than the listed test condition.
Although each I/O port can sink more than the test conditions (20mA at V_CC = 5V, 10mA at V_CC = 3V) under steady state conditions (non-transient), the following must be observed: 
1. The sum of all I_OL, for ports PA0-PA7, PE4 should not exceed 100mA. 
2. The sum of all I_OL, for ports RESET, PB0-7, PE5-6 should not exceed 100mA. 
3. The sum of all I_OL, for ports PC0-7, PE2-3 should not exceed 100mA. 
4. The sum of all I_OL, for ports PD0-7, PE0-1 should not exceed 100mA. 
  If I_OL exceeds the test condition, V_OL may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test condition.