Datasheet

 2018 Microchip Technology Inc. Data Sheet Complete DS40002060A-page 125
ATtiny4/5/9/10
Notes: 1. “Min” means the lowest value where the pin is guaranteed to be read as high.
2. “Max” means the highest value where the pin is guaranteed to be read as low.
3. 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 sum of all I
OL
(for all ports) should not exceed 60 mA. If I
OL
exceeds the test conditions, V
OL
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 (10 mA at V
CC
= 5V, 5 mA at V
CC
= 3V) under steady state
conditions (non-transient), the sum of all I
OH
(for all ports) should not exceed 60 mA. If I
OH
exceeds the test condition, V
OH
may exceed the related specification. Pins are not guaranteed to source current greater than the listed test condition.
5. The RESET pin must tolerate high voltages when entering and operating in programming modes and, as a consequence,
has a weak drive strength as compared to regular I/O pins. See Figure 18-25 on page 143, and Figure 18-26 on page 143.
6. Values are with external clock using methods described in “Minimizing Power Consumption” on page 34. Power Reduction
is enabled (PRR = 0xFF) and there is no I/O drive.
7. BOD Disabled.
17.3 Speed
The maximum operating frequency of the device depends on V
CC
. The relationship between supply voltage and maximum
operating frequency is piecewise linear, as shown in Figure 17-1.
Figure 17-1. Maximum Frequency vs. V
CC
I
CC
Power Supply Current
(6)
Active 1MHz, V
CC
= 2V 0.2 0.5 mA
Active 4MHz, V
CC
= 3V 0.8 1.2 mA
Active 8MHz, V
CC
= 5V 2.7 4 mA
Idle 1MHz, V
CC
= 2V 0.02 0.2 mA
Idle 4MHz, V
CC
= 3V 0.13 0.5 mA
Idle 8MHz, V
CC
= 5V 0.6 1.5 mA
Power-down mode
(7)
WDT enabled, V
CC
= 3V 4.5 10 A
WDT disabled, V
CC
= 3V 0.15 2 A
Table 17-1. DC Characteristics. T
A
= -40C to +85C (Continued)
Symbol Parameter Condition Min. Typ. Max. Units
4 MHz
8 MHz
1.8V 5.5V
4.5V2.7V
12 MHz