Datasheet

226
ATmega8A [DATASHEET]
8159E–AVR–02/2013
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 (20mA at Vcc = 5V, 10mA at Vcc = 3V) under steady state
conditions (non-transient), the following must be observed:
PDIP, TQFP, and QFN/MLF Package:
1] The sum of all IOL, for all ports, should not exceed 300mA.
2] The sum of all IOL, for ports C0 - C5 should not exceed 100mA.
3] The sum of all IOL, for ports B0 - B7, C6, D0 - D7 and XTAL2, should not exceed 200mA.
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.
4. Although each I/O port can source more than the test conditions (20mA at Vcc = 5V, 10mA at Vcc = 3V) under steady state
conditions (non-transient), the following must be observed:
PDIP, TQFP, and QFN/MLF Package:
1] The sum of all IOH, for all ports, should not exceed 300mA.
2] The sum of all IOH, for port C0 - C5, should not exceed 100mA.
3] The sum of all IOH, for ports B0 - B7, C6, D0 - D7 and XTAL2, should not exceed 200mA.
If IOH exceeds the test condition, VOH may exceed the related specification. Pins are not guaranteed to source current
greater than the listed test condition.
5. Minimum V
CC
for Power-down is 2.5V.
R
RST
Reset Pull-up Resistor 30 80 k
R
pu
I/O Pin Pull-up Resistor 20 50 k
I
CC
Power Supply Current
Active 4MHz, V
CC
= 3V 2 5 mA
Active 8MHz, V
CC
= 5V 6 15 mA
Idle 4MHz, V
CC
= 3V 0.5 2 mA
Idle 8MHz, V
CC
= 5V 2.2 7 mA
Power-down mode
(5)
WDT enabled, V
CC
= 3V <10 28 µA
WDT disabled, V
CC
= 3V <1 3 µA
V
ACIO
Analog Comparator
Input Offset Voltage
V
CC
= 5V
V
in
= V
CC
/2
40 mV
I
ACLK
Analog Comparator
Input Leakage Current
V
CC
= 5V
V
in
= V
CC
/2
-50 50 nA
t
ACPD
Analog Comparator
Propagation Delay
V
CC
= 2.7V
V
CC
= 5.0V
750
500
ns
T
A
= -40C to 85C, V
CC
= 2.7V to 5.5V (unless otherwise noted) (Continued)
Symbol Parameter Condition Min Typ Max Units