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Санкт-Петербургский государственный электротехнический университет "ЛЭТИ"

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[НЕСОРТИРОВАННОЕ]

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ATmega128 datasheet.pdf

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09.02.2015

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ATmega128

Pin Pull-up

Figure 180. 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 181. 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)

343

2467X–AVR–06/11

ATmega128

Pin Driver Strength

Figure 182. 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 183. 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)

344

2467X–AVR–06/11

ATmega128

Figure 184. 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 185. 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)

345

2467X–AVR–06/11

ATmega128

Pin Thresholds and

Hysteresis

Figure 186. I/O Pin Input Threshold Voltage vs. VCC (VIH, I/O 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 187. I/O Pin Input Threshold Voltage vs. VCC (VIH, I/O 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)

346

2467X–AVR–06/11

ATmega128

BOD Thresholds and

Analog Comparator

Offset

Figure 188. 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 189. BOD Threshold vs. Temperature (BODLEVEL is 4.0V)

	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)

347

2467X–AVR–06/11

ATmega128

Figure 190. BOD Threshold vs. Temperature (BODLEVEL is 2.7V)

Threshold (V)

2.8

Rising VCC

2.6

Falling VCC

2.4

2.2

-60

-40

-20

100

Temperature (°C)

Figure 191. Bandgap Voltage vs. Operating Voltage

	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)

348

2467X–AVR–06/11

ATmega128

Internal Oscillator	Figure 192. Watchdog Oscillator Frequency vs. VCC
Speed

	1220						-40	°C
							-40	°C
	1200						25	°C
	1180						85	°C
	1180
	1160
(kHz)	1140
RC
F
	1120
	1100
	1080
	1060
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 193. Calibrated 1MHz RC Oscillator Frequency vs. Temperature

	1.02
	1								5.5V
									5.0V
	0.98								4.5V
(MHz)									4.0V
(MHz)	0.96								3.6V
RC									3.3V
F
	0.94								2.7V
									2.7V
	0.92
	0.9
	-60	-40	-20	0	20	40	60	80	100

Temperature (°C)

349

2467X–AVR–06/11

ATmega128

Figure 194. Calibrated 1MHz RC Oscillator Frequency vs. VCC

	1.02						-40	°C
							-40	°C
							25	°C
	1						85	°C
	0.98
(MHz)	0.96
RC
F
	0.94
	0.92
	0.9
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 195. 1MHz RC Oscillator Frequency vs. Osccal Value

	1.5																25 °C
	1.4																25 °C
	1.4
	1.3
	1.2
(MHz)	1.1
	1
	0.9
RC	0.9
F	0.8
	0.8
	0.7
	0.6
	0.5
	0.4
	0	16	32	48	64	80	96	112	128	144	160	176	192	208	224	240	256

OSCCAL VALUE

350

2467X–AVR–06/11

ATmega128

Figure 196. Calibrated 2MHz RC Oscillator Frequency vs. Temperature

	2.05
	2								5.5V
									5.0V
	1.95								4.5V
(MHz)									4.5V
									4.0V
	1.9								3.6V
RC									3.6V
RC
F									3.3V
	1.85								3.3V
	1.85								2.7V
									2.7V
	1.8
	1.75
	-60	-40	-20	0	20	40	60	80	100

Temperature (°C)

Figure 197. Calibrated 2MHz RC Oscillator Frequency vs. VCC

	2.05
							-40	°C
							25	°C
	2						85	°C
							85	°C
(MHz)	1.95
(MHz)
RC
F	1.9
	1.9
	1.85
	1.8
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

351

2467X–AVR–06/11

ATmega128

Figure 198. 2MHz RC Oscillator Frequency vs. Osccal Value

	4
	3.5																25 °C
	3
(MHz)	2.5
(MHz)	2
RC
F	1.5
	1.5
	1
	0.5
	0
	0	16	32	48	64	80	96	112	128	144	160	176	192	208	224	240	256

OSCCAL VALUE

Figure 199. Calibrated 4MHz RC Oscillator Frequency vs. Temperature

	4.1
	4.05
	4
	3.95								5.5V
	3.95								5.0V
	3.9								5.0V
(MHz)	3.9								4.5V
									4.5V
	3.85								4.0V
RC									4.0V
RC
F	3.8								3.6V
	3.8								3.6V
	3.75								3.3V
	3.75
	3.7
	3.65								2.7V
	3.6
	-60	-40	-20	0	20	40	60	80	100

Temperature (°C)

352

2467X–AVR–06/11

ATmega128

Figure 200. Calibrated 4MHz RC Oscillator Frequency vs. VCC

	4.1
	4.05						-40 °C
	4.05
	4						25 °C
	4
	3.95						85 °C
	3.95
(MHz)	3.9
(MHz)	3.85
RC
F	3.8
	3.8
	3.75
	3.7
	3.65
	3.6
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 201. 4MHz RC Oscillator Frequency vs. Osccal Value

	9
	8															25 °C
																25 °C
	7
	6
(MHz)	5
(MHz)
RC	4
F
	3
	2
	1
	0
	0	16	32	48	64	80	96	112	128	144	160	176	192	208	224	240

OSCCAL VALUE

353

2467X–AVR–06/11

ATmega128

Figure 202. Calibrated 8MHz RC Oscillator Frequency vs. Temperature

	8.4
	8.2
	8
	7.8								5.5V
	7.8
(MHz)	7.6								5.0V
	7.6								4.5V
									4.5V
RC	7.4								4.0V
F									4.0V
	7.2								3.6V
	7								3.3V
	6.8								2.7V
	6.8
	6.6
	-60	-40	-20	0	20	40	60	80	100

Temperature (°C)

Figure 203. Calibrated 8MHz RC Oscillator Frequency vs. VCC

	8.4
	8.2						-40 °C
	8						25 °C
	8
	7.8						85 °C
	7.8
(MHz)	7.6
(MHz)
RC	7.4
F	7.4
F
	7.2
	7
	6.8
	6.6
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

354

2467X–AVR–06/11

ATmega128

Figure 204. 8MHz RC Oscillator Frequency vs. Osccal Value

	16
	14																25 °C
	14
	12
(MHz)	10
(MHz)	8
RC
F	6
	6
	4
	2
	0
	0	16	32	48	64	80	96	112	128	144	160	176	192	208	224	240	256

OSCCAL VALUE

Current Consumption Figure 205. Brownout Detector Current vs. VCC of Peripheral Units

25
20						-40	°C
						25	°C
15						85	°C
15
(uA)
CC
I
10
5
0
2.5	3	3.5	4	4.5	5	5.5

VCC (V)

355

2467X–AVR–06/11

ATmega128

Figure 206. ADC Current vs. AVCC (ADC at 50kHz)

	600
	500						-40 °C
	500						25 °C
							25 °C
							85 °C
	400
(uA)	300
CC	300
CC
I
	200
	100
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 207. ADC Current vs. AVCC (ADC at 1MHz)

250
200						25 °C
200						85 °C
						85 °C
						-40 °C
150
(uA)
CC
I
100
50
0
2.5	3	3.5	4	4.5	5	5.5

VCC (V)

356

2467X–AVR–06/11

ATmega128

Figure 208. Analog Comparator Current vs. VCC

	100						85 °C
	90						85 °C
	90						25 °C
	80						25 °C
	80						-40 °C
	70
(uA)	60
(uA)	50
CC	50
CC
I
	40
	30
	20
	10
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 209. Programming Current vs. VCC

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

VCC (V)

357

2467X–AVR–06/11

ATmega128

Current Consumption	Figure 210. Reset Supply Current vs. VCC (0.1 - 1.0MHz, Excluding Current Through The Reset
in Reset and Reset	Pull-up)
Pulse width

	4.5
	4										5.5V
	3.5										5.0V
	3										4.5V
	3										4.0V
											4.0V
(mA)	2.5										3.6V
	2.5										3.3V
											3.0V
CC	2										3.0V
CC											2.7V
I											2.7V
	1.5
	1
	0.5
	0
	0	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1

Frequency (MHz)

Figure 211. Reset Supply Current vs. VCC (1 - 20MHz, Excluding Current Through The Reset Pull-up)

	40
	35										5.5V
	35
	30										5.0V
	30
	25										4.5V
	25										4.0V
(mA)											4.0V
(mA)	20										3.6V
CC											3.3V
I

	15										3.0V
											2.7V
	10
	5
	0
	0	2	4	6	8	10	12	14	16	18	20

Frequency (MHz)

358

2467X–AVR–06/11

ATmega128

Figure 212. Reset Pull-up Resistor Current vs. Reset Pin Voltage (VCC = 5.0V)

	120
-40 °C		25 °C
	100
	85 °C
	80
(uA)	60
RESET	60
RESET
I
	40
	20
	0
	0	1	2	3	4	5	6

VRESET (V)

Figure 213. Reset Pull-up Resistor Current vs. Reset Pin Voltage (VCC = 2.7V

	60
-40 °C		25 °C
	50
		85 °C
	40
(uA)	30
RESET	30
RESET
I
	20
	10
	0
	0	0.5	1	1.5	2	2.5	3

VRESET (V)

359

2467X–AVR–06/11

ATmega128

Figure 214. Reset Input Threshold Voltage vs. VCC (VIH, Reset Pin Read as ‘1’)

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

VCC (V)

Figure 215. Reset Input Threshold Voltage vs. VCC (VIL, Reset Pin Read as ‘0’)

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

VCC (V)

360

2467X–AVR–06/11

ATmega128

Figure 216. Reset Input Pin Hysteresis vs. VCC

	0.5
	0.45
	0.4	-40 °C
	0.4
(mV)	0.35
(mV)	0.3
Hysteresis	0.3
	0.25
	0.2
Input	0.2	25 °C
	0.15	25 °C


	0.1
	0.05	85 °C
	0.05
	0
		2.5	3	3.5	4	4.5	5	5.5

VCC (V)

Figure 217. Reset Pulse width vs. VCC (External Clock, 1MHz)

	1.2
	1
(µs)	0.8
(µs)
Pulsewidth	0.6
							85	°C
	0.4						25	°C
	0.4						25	°C
							-40	°C
	0.2
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

361

2467X–AVR–06/11

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