196
9151AINDCO07/09
ATA8742
Notes: 1. All DC Characteristics contained in this data sheet are based on actual silicon characterization of ATtiny24/44/84 AVR micro-
controllers manufactured in corner run process technology. These values are preliminary values representing design
targets, and will be updated after characterization of actual Automotive silicon.
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 (10 mA at V
CC
= 5V, 5 mA at V
CC
= 3V) under steady state
conditions (non-transient), the following must be observed:
1] The sum of all IOL, for all ports, should not exceed 60 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 (10 mA at V
CC
= 5V, 5 mA at V
CC
= 3V) under steady state
conditions (non-transient), the following must be observed:
1] The sum of all IOH, for all ports, should not exceed 60 mA.
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. Pull up driving strength of the PB3 RESET
pad is weak.
29.2 Speed Grades
Figure 29-1. Maximum Frequency vs. V
CC
I
CC
Power Supply Current
Active 1MHz, V
CC
= 3V
0.4
1.5
mA
Active 4MHz, V
CC
= 3V
1.8
3.0
mA
Active 8MHz, V
CC
= 5V
5.0
10.0
mA
Idle 1MHz, V
CC
= 3V
0.075
0.2
mA
Idle 4MHz, V
CC
= 3V
0.3
0.5
mA
Idle 8MHz, V
CC
= 5V
1.2
2.5
mA
Power-down mode
WDT enabled, V
CC
= 3V
5.0
30
礎
WDT enabled, V
CC
= 5V
9.0
50
礎
WDT disabled, V
CC
= 3V
2.5
24
礎
WDT disabled, V
CC
= 5V
4.3
36
礎
I
ACLK
Analog Comparator Input
Leakage Current
V
CC
= 5V
V
in
= V
CC
/2
-50
50
nA
Table 29-1. DC Characteristics T
A
= -40癈 to 125癈, V
CC
= 2.7V to 5.5V (unless otherwise noted)
(1)
(Continued)
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
2.7V
8MHz
16MHz
4.5V
5.5V
Safe Operating
Safe Operating
Area
Area
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