ATtiny25/45/85 Auto

24.5Pin Driver Strength

Figure 24-19. I/O Pin Source Current vs. Output Voltage (VCC = 1.8V)

I/O P IN S INK CURRENT vs . OUTP UT VOLTAGE

						VCC = 1.8V
	12
											-40 ˚C
	10										25 ˚C
	8										85 ˚C
											125 ˚C
(mA)	6
OL
I
	4
	2
	0
	0	0.2	0.4	0.6	0.8	1	1.2	1.4	1.6	1.8	2

VOL (V)

Figure 24-20. I/O Pin Source Current vs. Output Voltage (VCC = 3V)

I/O P IN OUTP UT VOLTAGE vs . S INK CURRENT

				Vcc = 3.0V
	1.2
	1					125
	0.8					85
(V)						25
	0.6
OL						-40
V
	0.4
	0.2
	0
	0	5	10	15	20	25

IOL (V)

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Figure 24-21. I/O Pin Source Current vs. Output Voltage (VCC = 5V)

I/O P IN OUTP UT VOLTAGE vs . S INK CURRENT

				Vcc = 5.0V
	0.7
	0.6					125
						85
	0.5					25
(V)	0.4					-40
OL
V	0.3
	0.2
	0.1
	0
	0	5	10	15	20	25

IOL (V)

Figure 24-22. I/O Pin Sink Current vs. Output Voltage (VCC = 1.8V)

I/O P IN S OURCE CURRENT vs . OUTP UT VOLTAGE

						VCC = 1.8V
	9
	8							25 ˚C
	7
	6								-40 ˚C
(mA)							85 ˚C
	5
							125 ˚C
IOH	4
	3
	2
	1
	0
	0	0.2	0.4	0.6	0.8	1	1.2	1.4	1.6	1.8	2

VOH (V)

172 ATtiny25/45/85 Auto

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ATtiny25/45/85 Auto

Figure 24-23. I/O Pin Sink Current vs. Output Voltage (VCC = 3V)

I/O P IN OUTP UT VOLTAGE vs . S OURCE CURRENT

				Vcc = 3V
	3.5
	3
	2.5					-40
						25
(V	2					85
						125
OH
V	1.5
	1
	0.5
	0
	0	5	10	15	20	25

IOH (mA)

Figure 24-24. I/O Pin Sink Current vs. Output Voltage (VCC = 5.0V)

I/O P IN OUTP UT VOLTAGE vs . S OURCE CURRENT

				Vcc = 5.0V
	5.1
	5
	4.9
	4.8
(V)	4.7
OH
V
	4.6
	4.5					-40
	4.4					25
						85
	4.3					125
	0	5	10	15	20	25

IOH (mA)

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24.6Pin Thresholds and Hysteresis

Figure 24-25. I/O Pin Input Threshold Voltage vs. VCC (VIH, I/O Pin Read As '1')

I/O P IN INP UT THRES HOLD VOLTAGE vs . V

CC

VIH, IO PIN READ AS '1'

	3								-40 ˚C
									25	˚C
	2.5								85	˚C
									125	˚C
	2
hold
Thres	1.5
	1
	0.5
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5
					VCC (V)

Figure 24-26. I/O Pin Input Threshold Voltage vs. VCC (VIL, I/O Pin Read As '0')

I/O P IN INP UT THRES HOLD VOLTAGE vs . VCC

VIL, IO PIN READ AS '0'

									125	˚C
	2.5								85	˚C
									25	˚C
	2								-40 ˚C
Thres hold	1.5
	1
	0.5
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5
					VCC (V)

174 ATtiny25/45/85 Auto

7598C–AVR–09/06

ATtiny25/45/85 Auto

Figure 24-27. I/O Pin Input Hysteresis vs. VCC

I/O P IN INP UT HYS TERES IS

	0.8
	0.7
	0.6
hold	0.5
Thres	0.4								-40 ˚C
	0.3								25 ˚C
									85 ˚C
	0.2								125 ˚C
	0.1
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 24-28. Reset Input Threshold Voltage vs. VCC (VIH, Reset Pin Read As '1')

RES ET INP UT THRES HOLD VOLTAGE vs . V CC

VIH, IO PIN READ AS '1'

									125	˚C
	2.5								85	˚C
									25	˚C
	2								-40 ˚C
Thres hold	1.5
	1
	0.5
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5
					VCC (V)

175

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Figure 24-29. Reset Input Threshold Voltage vs. VCC (VIL, Reset Pin Read As '0')

RESET INPUT THRESHOLD VOLTAGE vs . V

CC

VIL, IO PIN READ AS '0'

	2.5								125	˚C
									85	˚C
									25	˚C
	2								-40 ˚C
Thres hold	1.5
	0.5
	0
	1.5	2	2.5	3	3.5	4	4.5	5	5.5
					VCC (V)

Figure 24-30. Reset Input Pin Hysteresis vs. VCC

RESET INPUT THRESHOLD VOLTAGE vs . V

CC

VIH, IO PIN READ AS '1'

	0.25
	0.2
Thres hold	0.15
	0.1
	0.05
										125	˚C
										85	˚C
	0									25	˚C
	1.5	2	2.5	3	3.5	4	4.5	5	5.5	-40 ˚C
					VCC (V)

176 ATtiny25/45/85 Auto

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