Datasheet

167
2586N–AVR–04/11
ATtiny25/45/85
Notes: 1. Typical values at 25°C.
2. “Min” means the lowest value where the pin is guaranteed to be read as high.
3. “Max” means the highest value where the pin is guaranteed to be read as low.
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.
6. 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 22-23, Figure 22-24, Figure 22-25, and Figure 22-26
(starting on page 189).
7. Values are with external clock using methods described in “Minimizing Power Consumption” on page 37. Power Reduction is
enabled (PRR = 0xFF) and there is no I/O drive.
8. Brown-Out Detection (BOD) disabled.
R
RST
Reset Pull-up Resistor V
CC
= 5.5V, input low 30 60 kΩ
R
pu
I/O Pin Pull-up Resistor V
CC
= 5.5V, input low 20 50 kΩ
I
CC
Power Supply Current
(7)
Active 1 MHz, V
CC
= 2V 0.3 0.55 mA
Active 4 MHz, V
CC
= 3V 1.5 2.5 mA
Active 8 MHz, V
CC
= 5V 5 8 mA
Idle 1 MHz, V
CC
= 2V 0.1 0.2 mA
Idle 4 MHz, V
CC
= 3V 0.35 0.6 mA
Idle 8 MHz, V
CC
= 5V 1.2 2 mA
Power-down mode
(8)
WDT enabled, V
CC
= 3V 10 µA
WDT disabled, V
CC
= 3V 2 µA
Table 21-1. DC Characteristics. T
A
= -40°C to +85°C (Continued)
Symbol Parameter Condition Min. Typ.
(1)
Max. Units