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174
8183F–AVR–06/12
ATtiny24A/44A/84A
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. Not tested in production.
5. Although each I/O port can sink more than the test conditions (10 mA at V
CC = 5V, 5 mA at VCC = 3V) under steady state
conditions (non-transient), the sum of all IOL (for all ports) should not exceed 60 mA. If IOL exceeds the test conditions, VOL
may exceed the related specification. Pins are not guaranteed to sink current greater than the listed test condition.
6. Although each I/O port can source more than the test conditions (10 mA at V
CC = 5V, 5 mA at VCC = 3V) under steady state
conditions (non-transient), 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.
7. The RESET pin must tolerate high voltages when entering and operating in programming modes and, as a consequence,
8. These are test limits, which account for leakage currents of the test environment. Actual device leakage currents are lower.
is enabled (PRR = 0xFF) and there is no I/O drive.
10. BOD Disabled.
20.3
Speed
The maximum operating frequency of the device depends on V
relationship between maximum frequency and V
CC is linear in the region 1.8V < VCC < 4.5V.
Figure 20-1.
Maximum Frequency vs. V
CC
ICC
Supply Current,
f = 1 MHz, V
CC = 2V
0.25
0.5
mA
f = 4 MHz, V
CC = 3V
1.2
2
mA
f = 8 MHz, VCC = 5V
4.4
7
mA
Supply Current,
f = 1 MHz, V
CC = 2V
0.04
0.2
mA
f = 4 MHz, VCC = 3V
0.25
0.6
mA
f = 8 MHz, VCC = 5V
1.3
2
mA
Supply Current,
WDT enabled, V
CC = 3V
4
10
A
WDT disabled, VCC = 3V
0.13
2
A
Table 20-1.
DC Characteristics. T
A = -40°C to +85°C (Continued)
Symbol
Parameter
Condition
Min
Typ(1)
Max
Units
4 MHz
1.8V
5.5V
4.5V
20 MHz