ATtiny261A datasheet(194/292 Pages) ATMEL

194 / 292 page

194

8197A–AVR–10/09

ATtiny261A/461A/861A

It is possible to calculate the typical current consumption based on the numbers from Table 20-1

for other VCC and frequency settings than listed in Table 20-2.

20.1.1

Example

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

at VCC = 2.0V and F = 1MHz. From Table 20-2, third column, we see that we need to add 10%

for the TIMER0, 27.3 % for the ADC, and 6.5 % for the USI module. Reading from Figure 20-6

on page 197, we find that the idle current consumption is ~0,085 mA at VCC = 2.0V and F=1MHz.

The total current consumption in idle mode with TIMER0, ADC, and USI enabled, gives:

Table 20-2.

Additional Current Consumption (percentage) in Active and Idle mode.

PRR bit

Additional Current consumption

compared to Active with external

clock (see Figure 20-1 on page

195 and Figure 20-2 on page 195)

Additional Current consumption

compared to Idle with external

clock (see Figure 20-6 on page

197 and Figure 20-7 on page 198)

PRTIM1

20...25 %

100 %

PRTIM0

2...3 %

10...15 %

PRUSI

2...12 %

10...50%

PRADC

15...100 %

50...500 %

ICCtotal 0,085mA

1 0,10 0,273 0,065

()

•

0,122mA

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ATtiny261A Datasheet(PDF) 194 Page - ATMEL Corporation