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Московский государственный технический университет им. H.Э.Баумана

Предмет:

Микропроцессорные устройства систем управления

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08 семестр / Разное / Скамко / inform / ATmega128.pdf

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https://studizba.com

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04.03.2014

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ATmega128

Figure 175. Power-down Supply Current vs. VCC (Watchdog Timer Enabled)

POWER-DOWN SUPPLY CURRENT vs. VCC

WATCHDOG TIMER ENABLED

	35
	30						85	˚C
							25	˚C
	25						-40	˚C
	25
(uA)	20
(uA)
CC	15
I

	10
	5
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Power-save Supply Current

Figure 176. Power-save Supply Current vs. VCC (Watchdog Timer Disabled)

POWER-SAVE SUPPLY CURRENT vs. VCC

WATCHDOG TIMER DISABLED

	16
	14						25 °C
	14
	12
	10
(uA)	8
CC	8
CC
I
	6
	4
	2
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

343

2467M–AVR–11/04



Standby Supply Current	Figure 177. Standby Supply Current vs. VCC,

STANDBY SUPPLY CURRENT vs. VCC

	0.2
	0.18						6 MHz Xtal
	0.18
	0.16						6 MHz Res
	0.16
	0.14						4 MHz Res
							4 MHz Res
	0.12						4 MHz Xtal
(mA)	0.12
(mA)	0.1						2 MHz Res
CC							2 MHz Res
CC							2 MHz Xtal
I
	0.08
	0.08						455 kHz Res
							455 kHz Res
	0.06						1 MHz Res
	0.04
	0.02
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 178. Standby Supply Current vs. VCC (CKOPT programmed)

STANDBY SUPPLY CURRENT vs. VCC

CKOPT programmed

2.5
						16 MHz Xtal
2						12 MHz Xtal
						12 MHz Xtal
1.5						6 MHz Xtal
(mA)						4 MHz Xtal
(mA)
CC
I
1
0.5
0
2.5	3	3.5	4	4.5	5	5.5

VCC (V)

344 ATmega128

2467M–AVR–11/04

ATmega128

Pin Pull-up

Figure 179. 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
		-40 °C
	100
(uA)	80
OP
I
	60
	40
	20
	0
	0	0.5	1	1.5	2	2.5	3	3.5	4	4.5	5

VOP (V)

Figure 180. I/O Pin Pull-up Resistor Current vs. Input Voltage (VCC = 2.7V)

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

				Vcc = 2.7V
	80
85 °C		25 °C
	70
	60	-40 °C
		-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)

345

2467M–AVR–11/04



Pin Driver Strength	Figure 181. I/O Pin Source Current vs. Output Voltage (VCC = 5V)

I/O PIN SOURCE CURRENT vs. OUTPUT VOLTAGE

				VCC = 5V
	90
	80	-40 °C
		-40 °C
	70	25 °C
		25 °C
	60	85 °C
		85 °C
(mA)	50
(mA)
OH	40
I	40
	30
	20
	10
	0
	2.5	3	3.5	4	4.5	5

VOH (V)

Figure 182. I/O Pin Source Current vs. Output Voltage (VCC = 2.7V)

I/O PIN SOURCE CURRENT vs. OUTPUT VOLTAGE

					VCC = 2.7V
	30	-40 °C
		-40 °C
	25	25 °C
		85 °C
	20
(mA)	15
OH
I
	10
	5
	0
		0.5	1	1.5	2	2.5	3

VOH (V)

346 ATmega128

2467M–AVR–11/04

ATmega128

Figure 183. I/O Pin Sink Current vs. Output Voltage (VCC = 5V)

I/O PIN SINK CURRENT vs. OUTPUT VOLTAGE

				VCC = 5V
	90
	80					-40 °C
	80
	70					25 °C
	60					85 °C
						85 °C
(mA)	50
(mA)
OL	40
I	40
	30
	20
	10
	0
	0	0.5	1	1.5	2	2.5

VOL (V)

Figure 184. I/O Pin Sink Current vs. Output Voltage, VCC = 2.7V

I/O PIN SINK CURRENT vs. OUTPUT VOLTAGE

				VCC = 2.7V
	35
	30					-40 °C
	30
	25					25 °C
	25
						85 °C
(mA)	20
(mA)
OL	15
I

	10
	5
	0
	0	0.5	1	1.5	2	2.5

VOL (V)

347

2467M–AVR–11/04

Pin Thresholds and

Hysteresis

Figure 185. I/O Pin Input Threshold Voltage vs. VCC (VIH, I/O Pin Read as ‘1’)

I/O PIN INPUT THRESHOLD VOLTAGE vs. VCC

VIH, IO PIN READ AS '1'

	2.2
							-40 °C
	2						25 °C
	2						85 °C
	1.8
(V)
Threshold	1.6
Threshold
	1.4
	1.2
	1
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 186. I/O Pin Input Threshold Voltage vs. VCC (VIH, I/O Pin Read as ‘0’)

I/O PIN INPUT THRESHOLD VOLTAGE vs. VCC

VIL, IO PIN READ AS '0'

	1.6
	1.5						-40 °C
							25 °C
	1.4						85 °C
	1.4
(V)	1.3
(V)
Threshold	1.2
Threshold	1.1
	1.1
	1
	0.9
	0.8
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

348 ATmega128

2467M–AVR–11/04

ATmega128

BOD Thresholds and Analog

Comparator Offset

Figure 187. I/O Pin Input Hysteresis vs. VCC

I/O PIN INPUT HYSTERESIS vs. VCC

	0.7
	0.6						85 °C
							25 °C
							-40 °C
	0.5
(V)
Hysteresis	0.4
Hysteresis	0.3
Input	0.3
Input
	0.2
	0.1
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 188. BOD Threshold vs. Temperature (BODLEVEL is 4.0V)

BOD THRESHOLDS vs. TEMPERATURE

BOD LEVEL IS 4.0 V

	4.4
	4.4
	4.2
	4.2				Rising	VCC
					Rising	VCC
(V)	4
(V)	4					VCC
Threshold					Falling	VCC
Threshold	3.8
	3.8
	3.6
	3.6
	3.4
	3.4
	-60	-40	-20	0	20		40	60	80	100
					Temperature (C)

349

2467M–AVR–11/04

Figure 189. BOD Threshold vs. Temperature (BODLEVEL is 2.7V)

Threshold (V)

BOD THRESHOLDS vs. TEMPERATURE

BOD LEVEL IS 2.7 V

2.8

Rising VCC

2.6

Falling VCC

2.4

2.2

-60

-40

-20

100

Temperature (C)

Figure 190. Bandgap Voltage vs. Operating Voltage

BANDGAP VOLTAGE vs. VCC

	1.275
	1.27						85	°C
	1.27
(V)							-40	°C
(V)
Voltage	1.265						25	°C
Voltage
Bandgap	1.26
Bandgap
	1.255
	1.25
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

350 ATmega128

2467M–AVR–11/04

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Power-save Supply Current

Standby Supply Current

Pin Pull-up

Pin Driver Strength