ATtiny44 datasheet(186/236 Pages) ATMEL

No. de pieza	ATtiny44

Descripción Electrónicos	8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash

PDF	236 Pages

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Fabricante Electrónico	ATMEL [ATMEL Corporation]

Página de inicio	http://www.atmel.com

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186 / 236 page

186

8006H–AVR–10/09

ATtiny24/44/84

21.1.1

Example

Calculate the expected current consumption in idle mode with USI, TIMER0, and ADC enabled

at V

CC = 2.0V and f = 1MHz. From Table 21-2 on page 186, third column, we see that we need to

add 6.1% for the USI, 10.4% for TIMER0, and 28.8% for the ADC. Reading from Figure 21-6 on

page 189

, we find that current consumption in idle mode at 2V and 1MHz is about 0.04mA. The

total current consumption in idle mode with USI, TIMER0, and ADC enabled is therefore:

21.2

Active Supply Current

Figure 21-1. Active Supply Current vs. Low Frequency (0.1 - 1.0 MHz)

Table 21-2.

Additional Current Consumption (percentage) in Active and Idle mode

PRR bit

Current consumption additional to

active mode with external clock

(see Figure 21-1 and Figure 21-2)

Current consumption additional to

idle mode with external clock

(see Figure 21-6 and Figure 21-7)

PRTIM1

1.8 %

8.0 %

PRTIM0

2.3 %

10.4 %

PRUSI

1.4 %

6.1 %

PRADC

6.7 %

28.8 %

ICCTOT

0.04mA

0.061

0.104

0.288

()

0.06mA

≈≈

ACTIVE SUPPLY CURRENT vs. LOW FREQUENCY

(PRR=0xFF)

5.5 V

5.0 V

4.5 V

4.0 V

3.3 V

2.7 V

1.8 V

0.2

0.4

0.6

0.8

1.2

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

Frequency (MHz)

ATtiny44 Datasheet(PDF) 186 Page - ATMEL Corporation

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