Datasheet

169
8024A–AVR–04/08
ATmega8HVA/16HVA
29.4 General I/O Lines characteristics
Notes: 1. Applicable for all except PC0.
2. “Max” means the highest value where the pin is guaranteed to be read as low
3. “Min” means the lowest value where the pin is guaranteed to be read as high
4. Although each I/O port can sink more than the test conditions (5 mA at V
CC
= 3.3V) under steady state conditions (non-tran-
sient), the following must be observed:
- The sum of all IOL should not exceed 20 mA.
If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test condition.
5. Although each I/O port can source more than the test conditions (2 mA at V
CC
= 3.3V) under steady state conditions (non-
transient), the following must be observed:
- The sum of all IOH should not exceed 2 mA.
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. This value is not tested in production.
4. C
b
= capacitance of one bus line in pF
Table 29-3.
(1)
T
A
= -10°C to 70°C, V
CC
= 3.3V
Symbol Parameter Condition Min. Typ. Max. Units
V
IL
Input Low Voltage, Except
RESET pin
-0.5 0.3V
CC
(2)
V
V
IL1
Input Low Voltage,
RESET pin
0.3V
CC
(2)
V
IH
Input High Voltage,
Except RESET pin
0.6V
CC
(3)
V
CC
+ 0.5 V
V
IH1
Input High Voltage,
RESET pin
0.9V
CC
(3)
V
CC
+ 0.5 V
V
OL
Output Low Voltage I
OL
= 5mA 0.5 V
V
OH
Output High Voltage I
OH
= 2 mA 2.3 V
I
IL
Input Leakage
Current I/O Pin
Pin low
(absolute value)
1µA
I
IH
Input Leakage
Current I/O Pin
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
Table 29-4. PC0 Characteristics (T
A
= -10°C to 70°C unless otherwise specified)
Symbol Parameter Condition Min Max Units
V
IL
Input Low-voltage -0.5 0.8
(1)
V
V
IH
Input High-voltage 2.1
(2)
5.5 V
V
OL
Output Low-voltage 350 µA sink current 0 0.4 V
t
r
(3)
Rise Time 300 ns
t
of
(3)
Output Fall Time from V
IHmin
to V
ILmax
C
b
< 400 pF
(4)
250 ns
t
SP
(3)
Spikes Suppressed by Input Filter 0 50 ns
I
i
(3)
Input Current 0.1V
BUS
< V
i
< 0.9V
BUS
-5 5 µA
C
i
(3)
Capacitance 10 pF