
303
2545T–AVR–05/11
ATmega48/88/168
29. Electrical characteristics
29.1
Absolute maximum ratings*
29.2
DC characteristics
Operating temperature................................... -55°C to +125°C
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.
Storage temperature...................................... -65°C to +150°C
Voltage on any pin except RESET
with respect to ground .................................-0.5V to VCC+0.5V
Voltage on RESET with respect to ground ......-0.5V to +13.0V
Maximum operating voltage.............................................. 6.0V
DC current per I/O pin.................................................. 40.0mA
DC current
V
CC and GND pins .................................. 200.0mA
T
A = -40°C to 85°C, VCC = 1.8V to 5.5V (unless otherwise noted).
Symbol
Parameter
Condition
Minimum
Typical
Maximum
Units
VIL
Input low voltage, except
XTAL1 and RESET pin
VCC = 1.8V - 2.4V
V
CC = 2.4V - 5.5V
-0.5
0.2VCC
0.3V
CC
V
VIH
Input high voltage, except
XTAL1 and RESET pins
VCC = 1.8V - 2.4V
V
CC = 2.4V - 5.5V
0.6V
VCC + 0.5
V
CC + 0.5
VIL1
Input low voltage,
XTAL1 pin
V
CC = 1.8V - 5.5V
-0.5
0.1V
CC
VIH1
Input high voltage,
XTAL1 pin
V
CC = 1.8V - 2.4V
V
CC = 2.4V - 5.5V
0.8V
0.7V
V
CC + 0.5
V
CC + 0.5
VIL2
Input low voltage,
RESET pin
V
CC = 1.8V - 5.5V
-0.5
0.2V
CC
VIH2
Input high voltage,
RESET pin
V
CC = 1.8V - 5.5V
0.9V
V
CC + 0.5
VIL3
Input low voltage,
RESET pin as I/O
V
CC = 1.8V - 2.4V
V
CC = 2.4V - 5.5V
-0.5
0.2V
CC
0.3V
CC
VIH3
Input high voltage,
RESET pin as I/O
VCC = 1.8V - 2.4V
V
CC = 2.4V - 5.5V
0.6V
VCC + 0.5
V
CC + 0.5
VOL
RESET pin as I/O
IOL = 20mA, VCC = 5V
IOL = 6mA, VCC = 3V
0.7
0.5
VOH
RESET pin as I/O
IOH = -20mA, VCC = 5V
IOH = -10mA, VCC = 3V
4.2
2.3
IIL
Input leakage
current I/O pin
VCC = 5.5V, pin low
(absolute value)
1
A
IIH
Input leakage
current I/O pin
VCC = 5.5V, pin high
(absolute value)
1
R
RST
Reset pull-up resistor
30
60
k
Ω
RPU
I/O pin pull-up resistor
20
50