ATmega8535(L)

ATmega8535 Typical

Characteristics –

Preliminary Data

Active Supply Current

The following charts show typical behavior. These figures are not tested during manufacturing. All current consumption measurements are performed with all I/O pins configured as inputs and with internal pull-ups enabled. A sine wave generator with rail- to-rail output is used as clock source.

The power consumption in Power-down mode is independent of clock selection.

The 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.

The current drawn from capacitive loaded pins may be estimated (for one pin) as CL*VCC*f where CL = load capacitance, VCC = operating voltage and f = average switching frequency of I/O pin.

The parts are characterized at frequencies higher than test limits. Parts are not guaranteed to function properly at frequencies higher than the ordering code indicates.

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.

Figure 130. Active Supply Current vs. Frequency (0.1 - 1.0 MHz)

ACTIVE SUPPLY CURRENT vs. FREQUENCY

						0.1 - 1.0 MHz
	2
	1.8										5.5V
	1.6
											5.0V
	1.4										4.5V
(mA)	1.2										4.0V
	1										3.3V
CC											3.0V
I	0.8
											2.7V
	0.6
	0.4
	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)

263

2502F–AVR–06/04

Figure 131. Active Supply Current vs. Frequency (1 - 16 MHz)

ACTIVE SUPPLY CURRENT vs. FREQUENCY

				1 - 16 MHz
25
								5.5V
20								5.0V
								4.5V
15								4.0V
(mA)
CC
I
10
							3.3V
5						3.0V
				2.7V
0
0	2	4	6	8	10	12	14	16

Frequency (MHz)

Figure 132. Active Supply Current vs. VCC (Internal RC Oscillator, 8 MHz)

ACTIVE SUPPLY CURRENT vs. VCC

INTERNAL RC OSCILLATOR, 8 MHz

	18
	16						-40°C
	14						25°C
	12						85°C
(mA)	10
CC	8
I
	6
	4
	2
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

264 ATmega8535(L)

2502F–AVR–06/04

ATmega8535(L)

Figure 133. Active Supply Current vs. VCC (Internal RC Oscillator, 4 MHz)

ACTIVE SUPPLY CURRENT vs. VCC

INTERNAL RC OSCILLATOR, 4 MHz

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

VCC (V)

Figure 134. Active Supply Current vs. VCC (Internal RC Oscillator, 2 MHz)

ACTIVE SUPPLY CURRENT vs. VCC

INTERNAL RC OSCILLATOR, 2 MHz

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

VCC (V)

265

2502F–AVR–06/04

Figure 135. Active Supply Current vs. VCC (Internal RC Oscillator, 1 MHz)

ACTIVE SUPPLY CURRENT vs. VCC

INTERNAL RC OSCILLATOR, 1 MHz

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

VCC (V)

Figure 136. Active Supply Current vs. VCC (32 kHz External Oscillator)

ACTIVE SUPPLY CURRENT vs. VCC

32kHz EXTERNAL OSCILLATOR

	0.08
	0.07						25°C
	0.06
	0.05
(mA)	0.04
CC
I
	0.03
	0.02
	0.01
	0
	2.5	3	3.5	4	4.5	5	5.5

VCC (V)

266 ATmega8535(L)

2502F–AVR–06/04