Datasheet

ATmega164A/PA/324A/PA/644A/PA/1284/P
 2018 Microchip Technology Inc. Data Sheet Complete DS40002070A-page 327
Notes: 1. “Max.” means the highest value where the pin is ensured to be read as low.
2. “Min.” means the lowest value where the pin is ensured to be read as high.
3. Although each I/O port can sink more than the test conditions (20mA at VCC = 5V, 10mA at V
CC
= 3V) under steady state
conditions (non-transient), the following must be observed:
1.)The sum of all I
OL
, for ports PB0-PB7, XTAL2, PD0-PD7 should not exceed 100mA.
2.)The sum of all I
OH
, for ports PA0-PA3, PC0-PC7 should not exceed 100mA.
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 V
CC
= 3V) under steady
state conditions (non-transient), the following must be observed:
1.)The sum of all I
OL
, for ports PB0-PB7, XTAL2, PD0-PD7 should not exceed 100mA.
2.)The sum of all I
OH
, for ports PA0-PA3, PC0-PC7 should not exceed 100mA.
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.
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
Table 28-1. T
A
= -40C to 85C, V
CC
= 1.8V to 5.5V (unless otherwise noted)
Symbol Parameter Condition Min. Typ. Max. Units