Datasheet

186
8197C–AVR–05/11
ATtiny261A/461A/861A
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 sum of all I
OL
(for all ports) should not exceed 100 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.
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 sum of all I
OH
(for all ports) should not exceed 100 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.
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 20-32, Figure 20-33, Figure 20-34, and Figure 20-35
(starting on page 214).
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. BOD Disabled.
I
IH
Input Leakage
Current I/O Pin
V
CC
= 5.5V, pin high
(absolute value)
< 0.05 1 µA
R
RST
Reset Pull-up Resistor 30 60 kΩ
R
PU
I/O Pin Pull-up Resistor 20 50 kΩ
I
CC
Power Supply Current
(7)
Active 1MHz, V
CC
= 2V 0.2 0.5 mA
Active 4MHz, V
CC
= 3V 1.2 2 mA
Active 8MHz, V
CC
= 5V 3.6 7 mA
Idle 1MHz, V
CC
= 2V 0.04 0.15 mA
Idle 4MHz, V
CC
= 3V 0.25 0.4 mA
Idle 8MHz, V
CC
= 5V 0.9 1.5 mA
Power-down mode
(8)
WDT enabled, V
CC
= 3V 4 10 µA
WDT disabled, V
CC
= 3V 0.15 2 µA
Table 19-1. DC Characteristics. T
A
= -40°C to +85°C, V
CC
= 1.8V to 5.5V (unless otherwise noted).
Symbol Parameter Condition Min Typ
(1)
Max Units