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Казахский национальный университет им. аль-Фараби

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ATtiny13

19. Typical Characteristics

The data contained in this section is largely based on simulations and characterization of similar devices in the same process and design methods. Thus, the data should be treated as indications of how the part will behave.

The following charts show typical behavior. These figures are not tested during manufacturing. During characterisation devices are operated at frequencies higher than test limits but they are not guaranteed to function properly at frequencies higher than the ordering code indicates.

All current consumption measurements are performed with all I/O pins configured as inputs and with internal pull-ups enabled. Current consumption is a function of several factors such as operating voltage, operating frequency, loading of I/O pins, switching rate of I/O pins, code executed and ambient temperature. The dominating factors are operating voltage and frequency.

A sine wave generator with rail-to-rail output is used as clock source but current consumption in Power-Down mode is independent of clock selection. The difference between current consumption in Power-Down mode with Watchdog Timer enabled and Power-Down mode with Watchdog Timer disabled represents the differential current drawn by the Watchdog Timer.

The current drawn from pins with a capacitive load may be estimated (for one pin) as follows:

ICP ≈ VCC × CL × fSW

where VCC = operating voltage, CL = load capacitance and fSW = average switching frequency of I/O pin.

19.1Active Supply Current

Figure 19-1. Active Supply Current vs. Frequency (0.1 - 1.0 MHz)

ACTIVE SUPPLY CURRENT vs. LOW FREQUENCY

						0.1 - 1.0 MHz
	1.2
	1										5.5 V
	1
											5.0 V
	0.8										4.5 V
											4.5 V
(mA)											4.0 V
(mA)	0.6
CC											3.3 V
I

	0.4										2.7 V
	0.2										1.8 V
	0.2
	0
	0	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1

Frequency (MHz)

123

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Figure 19-2. Active Supply Current vs. Frequency (1 - 20 MHz)

ACTIVE SUPPLY CURRENT vs. FREQUENCY

						1 - 20MHz
	14
											5.5 V
	12										5.0 V
											5.0 V
	10										4.5 V
											4.5 V
(mA)	8
(mA)
CC	6
I

	4					4.0 V
	4					3.3 V
						3.3 V
	2					2.7 V
	2
	0			1.8 V
	0
	0	2	4	6	8	10	12	14	16	18	20

Frequency (MHz)

Figure 19-3. Active Supply Current vs. VCC (Internal RC Oscillator, 9.6 MHz)

ACTIVE SUPPLY CURRENT vs. VCC

INTERNAL RC OSCILLATOR, 9.6 MHz

	8
	7								85	°C
									-40	°C
	6								25	°C
									25	°C
	5
(mA)	4
CC
I
	3
	2
	1
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

124 ATtiny13

2535J–AVR–08/10

ATtiny13

Figure 19-4. Active Supply Current vs. VCC (Internal RC Oscillator, 4.8 MHz)

ACTIVE SUPPLY CURRENT vs. VCC

INTERNAL RC OSCILLATOR, 4.8 MHz

	4.5								25 °C
									25 °C
	4								-40 °C
									85 °C
	3.5
	3
(mA)	2.5
(mA)
CC	2
I	2
	1.5
	1
	0.5
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 19-5. Active Supply Current vs. VCC (Internal WDT Oscillator, 128 kHz)

ACTIVE SUPPLY CURRENT vs. VCC

INTERNAL WD OSCILLATOR, 128 KHz

	0.14
									-40 °C
	0.12								25 °C
	0.12
									85 °C
	0.1
(mA)	0.08
(mA)
CC	0.06
I

	0.04
	0.02
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

125

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Figure 19-6. Active Supply Current vs. VCC (32 kHz External Clock)

ACTIVE SUPPLY CURRENT vs. VCC

32 kHz EXTERNAL CLOCK

	0.04								25 °C
									25 °C
	0.035								85 °C
	0.03
	0.025
(mA)	0.02
CC
I
	0.015
	0.01
	0.005
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

19.2Idle Supply Current

Figure 19-7. Idle Supply Current vs. Frequency (0.1 - 1.0 MHz)

IDLE SUPPLY CURRENT vs. LOW FREQUENCY

						(0.1 - 1.0 MHz)
	0.9
	0.8										5.5 V
	0.8
	0.7										5.0 V
	0.6										4.5 V
(mA)	0.5										4.0 V
	0.5
											3.3 V
CC	0.4										3.3 V
I	0.4
	0.3										2.7 V
	0.3
	0.2										1.8 V
	0.1
	0
	0	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1

Frequency (MHz)

126 ATtiny13

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ATtiny13

Figure 19-8. Idle Supply Current vs. Frequency (1 - 20 MHz)

IDLE SUPPLY CURRENT vs. FREQUENCY

						1 - 20MHz
	5
	4.5
	4										5.5 V
	3.5										5.0 V
(mA)	3										4.5 V
(mA)	2.5
CC
I	2
	2
	1.5					4.0 V
	1					4.0 V
	1					3.3 V
						3.3 V
	0.5					2.7 V
	0.5
	0		1.8 V
	0
	0	2	4	6	8	10	12	14	16	18	20

Frequency (MHz)

Figure 19-9. Idle Supply Current vs. VCC (Internal RC Oscillator, 9.6 MHz)

IDLE SUPPLY CURRENT vs. VCC

INTERNAL RC OSCILLATOR, 9.6 MHz

2.5
2								85 °C
2								25 °C
								25 °C
								-40 °C
1.5
(mA)
CC
I
1
0.5
0
1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

127

2535J–AVR–08/10

Figure 19-10. Idle Supply Current vs. VCC (Internal RC Oscillator, 4.8 MHz)

IDLE SUPPLY CURRENT vs. VCC

INTERNAL RC OSCILLATOR, 4.8 MHz

	1.2
	1								85	°C
	1								25	°C
									25	°C
									-40	°C
	0.8
(mA)	0.6
CC
I
	0.4
	0.2
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 19-11. Idle Supply Current vs. VCC (Internal RC Oscillator, 128 kHz)

IDLE SUPPLY CURRENT vs. VCC

INTERNAL WD OSCILLATOR, 128 KHz

	0.035
									-40 °C
	0.03								25 °C
	0.03
									85 °C
	0.025
(mA)	0.02
(mA)
CC	0.015
I

	0.01
	0.005
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

128 ATtiny13

2535J–AVR–08/10

ATtiny13

Figure 19-12. Idle Supply Current vs. VCC (32 kHz External Clock)

IDLE SUPPLY CURRENT vs. VCC

32kHz EXTERNAL CLOCK

	10
	9								85 °C
	8								25 °C
									25 °C
	7								-40 °C
	7
(uA)	6
(uA)	5
CC	5
CC
I	4
	4
	3
	2
	1
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

19.3Power-Down Supply Current

Figure 19-13. Power-Down Supply Current vs. VCC (Watchdog Timer Disabled)

POWER-DOWN SUPPLY CURRENT vs. VCC

WATCHDOG TIMER DISABLED

	1.8
	1.6								85	˚C
	1.4
	1.2
(uA)	1
(uA)
CC	0.8								-40	˚C
I	0.8								-40	˚C
	0.6								25	˚C
	0.6
	0.4
	0.2
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

129

2535J–AVR–08/10

Figure 19-14. Power-Down Supply Current vs. VCC (Watchdog Timer Enabled)

POWER-DOWN SUPPLY CURRENT vs. VCC

WATCHDOG TIMER ENABLED

	10
	9								-40 ˚C
	9								85 ˚C
									85 ˚C
	8								25 ˚C
	7
(uA)	6
(uA)	5
CC	5
CC
I	4
	4
	3
	2
	1
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

19.4Pin Pull-up

Figure 19-15. I/O Pin Pull-up Resistor Current vs. Input Voltage (VCC = 5V)

I/O PIN PULL-UP RESISTOR CURRENT vs. INPUT VOLTAGE

				VCC = 5V
	160
	140	25 ˚C
85 ˚C		25 ˚C
	120
	100	-40 ˚C
	100
(uA)	80
OP	80
OP
I
	60
	40
	20
	0
	0	1	2	3	4	5	6
				VOP (V)

130 ATtiny13

2535J–AVR–08/10

ATtiny13

Figure 19-16. I/O Pin Pull-up Resistor Current vs. Input Voltage (VCC = 2.7V)

I/O PIN PULL-UP RESISTOR CURRENT vs. INPUT VOLTAGE

VCC = 2.7

	80
85 ºC		25 ˚C
	70
	60
		-40 ˚C
	50
(uA)	40
OP	40
OP
I
	30
	20
	10
	0
	0	0.5	1	1.5	2	2.5	3

VOP (V)

Figure 19-17. Reset Pull-up Resistor Current vs. Reset Pin Voltage (VCC = 5V)

RESET PULL-UP RESISTOR CURRENT vs. RESET PIN VOLTAGE

				VCC = 5V
	120
-40 ˚C		25 ˚C
-40 ˚C
	100
		85 ˚C
	80
(uA)	60
RESET	60
RESET
I
	40
	20
	0
	0	1	2	3	4	5
				VRESET (V)

131

2535J–AVR–08/10

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