
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 VCC = 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. Cb = capacitance of one bus line in pF
Table 29-3.
A = -10°C to 70°C, VCC = 3.3V
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
VIL
Input Low Voltage, Except
RESET pin
-0.5
0.3VCC
V
VIL1
Input Low Voltage,
RESET pin
0.3VCC
VIH
Input High Voltage,
Except RESET pin
0.6V
V
CC + 0.5
V
VIH1
Input High Voltage,
RESET pin
VCC + 0.5
V
VOL
Output Low Voltage
IOL = 5mA
0.5
V
VOH
Output High Voltage
IOH = 2 mA
2.3
V
IIL
Input Leakage
Current I/O Pin
Pin low
(absolute value)
1A
IIH
Input Leakage
Current I/O Pin
Pin high
(absolute value)
1A
RRST
Reset Pull-up Resistor
30
60
k
Ω
RPU
I/O Pin Pull-up Resistor
20
50
k
Ω
Table 29-4.
PC0 Characteristics (T
A = -10°C to 70°C unless otherwise specified)
Symbol
Parameter
Condition
Min
Max
Units
VIL
Input Low-voltage
-0.5
V
IH
Input High-voltage
5.5
V
OL
Output Low-voltage
350 A sink current
0
0.4
V
tr
Rise Time
300
ns
t
of
Output Fall Time from V
IHmin to VILmax
C
b < 400 pF
250
ns
t
Spikes Suppressed by Input Filter
0
50
ns
Ii
Input Current
0.1VBUS < Vi < 0.9VBUS
-5
5
A
C
i
Capacitance
10
pF