Data Sheet

304
2545K–AVR–04/07
ATmega48/88/168
Notes: 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 (20 mA at V
CC
= 5V, 10 mA at V
CC
= 3V) under steady state
conditions (non-transient), the following must be observed:
ATmega48/88/168:
1] The sum of all I
OL
, for ports C0 - C5, ADC7, ADC6 should not exceed 100 mA.
2] The sum of all I
OL
, for ports B0 - B5, D5 - D7, XTAL1, XTAL2 should not exceed 100 mA.
3] The sum of all I
OL
, for ports D0 - D4, RESET should not exceed 100 mA.
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.
4. Although each I/O port can source more than the test conditions (20 mA at V
CC
= 5V, 10 mA at V
CC
= 3V) under steady state
conditions (non-transient), the following must be observed:
ATmega48/88/168:
1] The sum of all I
OH
, for ports C0 - C5, D0- D4, ADC7, RESET should not exceed 150 mA.
2] The sum of all I
OH
, for ports B0 - B5, D5 - D7, ADC6, XTAL1, XTAL2 should not exceed 150 mA.
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.
5. All DC Characteristics contained in this datasheet are based on simulation and characterization of other AVR microcontrol-
lers manufactured in the same process technology. These values are preliminary values representing design targets, and
will be updated after characterization of actual silicon
I
IL
Input Leakage
Current I/O Pin
V
CC
= 5.5V, pin low
(absolute value)
1µA
I
IH
Input Leakage
Current I/O Pin
V
CC
= 5.5V, pin high
(absolute value)
1µA
R
RST
Reset Pull-up Resistor 30 60 kΩ
R
PU
I/O Pin Pull-up Resistor 20 50 kΩ
I
CC
Power Supply Current
(6)
Active 1MHz, V
CC
= 2V
(ATmega48/88/168V)
0.55 mA
Active 4MHz, V
CC
= 3V
(ATmega48/88/168L)
3.5 mA
Active 8MHz, V
CC
= 5V
(ATmega48/88/168)
12 mA
Idle 1MHz, V
CC
= 2V
(ATmega48/88/168V)
0.25 0.5 mA
Idle 4MHz, V
CC
= 3V
(ATmega48/88/168L)
1.5 mA
Idle 8MHz, V
CC
= 5V
(ATmega48/88/168)
5.5 mA
Power-down mode
WDT enabled, V
CC
= 3V <8 15 µA
WDT disabled, V
CC
= 3V <1 2 µA
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
ACID
Analog Comparator
Propagation Delay
V
CC
= 2.7V
V
CC
= 4.0V
750
500
ns
T
A
= -40°C to 85°C, V
CC
= 1.8V to 5.5V (unless otherwise noted) (Continued)
Symbol Parameter Condition Min.
(5)
Typ. Max.
(5)
Units