Datasheet

Symbol Parameter Condition Min. Typ. Max. Units
V
IH3
Input High Voltage,
RESET pin as I/O
V
CC
= 1.8V - 2.4V 0.7V
CC
(2)
V
CC
+ 0.5 V
V
CC
= 2.4V - 5.5V 0.6V
CC
(2)
V
CC
+ 0.5
V
OL
Output Low Voltage
(4)
except RESET pin
I
OL
= 20mA,
V
CC
= 5V
T
A
=85°C 0.9 V
T
A
=105°C 1.0 V
I
OL
= 10mA,
V
CC
= 3V
T
A
=85°C 0.6 V
T
A
=105°C 0.7 V
V
OH
Output High Voltage
(3)
except Reset pin
I
OH
= -20mA,
V
CC
= 5V
T
A
=85°C 4.2 V
T
A
=105°C 4.1 V
I
OH
= -10mA,
V
CC
= 3V
T
A
=85°C 2.3 V
T
A
=105°C 2.1 V
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 30 60 kΩ
R
PU
I/O Pin Pull-up Resistor 20 50 kΩ
V
ACIO
Analog Comparator
Input Offset Voltage
V
CC
= 5V
V
in
= V
CC
/2
<10 40 mV
I
ACLK
Analog Comparator
Input Leakage Current
V
CC
= 5V
V
in
= V
CC
/2
-50 50 nA
t
ACPD
Analog Comparator
Propagation Delay
V
CC
= 2.7V
V
CC
= 4.0V
750
500
ns
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 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:
3.1. The sum of all I
OH
, for ports C0 - C5, D0- D4, ADC7, RESET should not exceed 100mA.
3.2. The sum of all I
OH
, for ports B0 - B5, D5 - D7, ADC6, XTAL1, XTAL2 should not exceed
100mA.
ATmega48PA/88PA/168PA
Electrical Characteristics
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40002011A-page 385