Datasheet

305
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
28.2 DC Characteristics.
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:
ATmega328P:
1] The sum of all I
OL
, for ports C0 - C5, 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, 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:
ATmega328P:
1] The sum of all I
OH
, for ports C0 - C5, D0- D4, should not exceed 150 mA.
2] The sum of all I
OH
, for ports B0 - B5, D5 - D7, 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.
T
A
= -40°C to 125°C, V
CC
= 2.7V to 5.5V (unless otherwise noted)
Symbol Parameter Condition Min. Typ. Max. Units
V
IL
Input Low Voltage, except
XTAL1 and RESET pin
V
CC
= 2.7V - 5.5V -0.5 0.3V
CC
(1)
V
V
IH
Input High Voltage, except
XTAL1 and RESET
pins
V
CC
= 2.7V - 5.5V 0.6V
CC
(2)
V
CC
+ 0.5 V
V
IL1
Input Low Voltage,
XTAL1 pin
V
CC
= 2.7V - 5.5V -0.5 0.1V
CC
(1)
V
V
IH1
Input High Voltage,
XTAL1 pin
V
CC
= 2.7V - 5.5V 0.7V
CC
(2)
V
CC
+ 0.5 V
V
IL2
Input Low Voltage,
RESET
pin
V
CC
= 2.7V - 5.5V -0.5 0.1V
CC
(1)
V
V
IH2
Input High Voltage,
RESET pin
V
CC
= 2.7V - 5.5V 0.9V
CC
(2)
V
CC
+ 0.5 V
V
OL
Output Low Voltage
(3)
I
OL
= 20 mA, V
CC
= 5V
I
OL
= 5 mA, V
CC
= 3V
0.8
0.5
V
V
OH
Output High Voltage
(4)
I
OH
= -20 mA, V
CC
= 5V
I
OH
= -10 mA, V
CC
= 3V
4.1
2.3
V
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
V
ACIO
Analog Comparator
Input Offset Voltage
0.4V<V
in
<
Vcc-0.5
(absolute value)
10 40 mV
I
ACLK
Analog Comparator
Input Leakage Current
V
CC
= 5V
V
in
= V
CC
/2
-50 50 nA