ATA5771 ATMEL Corporation, ATA5771 Datasheet - Page 239

• Manufacturer Part Number: ATA5771
• Manufacturer: ATMEL Corporation

21.1.1
21.2
8006G–AVR–01/08
Active Supply Current
Example
Table 21-2.
Calculate the expected current consumption in idle mode with USI, TIMER0, and ADC enabled
at V
add 6.1% for the USI, 10.4% for TIMER0, and 28.8% for the ADC. Reading from
page 190
total current consumption in idle mode with USI, TIMER0, and ADC enabled is therefore:
Figure 21-1. Active Supply Current vs. Low Frequency (0.1 - 1.0 MHz)
I
CCTOT
PRR bit
PRTIM0
PRUSI
PRADC
CC
= 2.0V and f = 1MHz. From
≈
0.04mA
, we find that current consumption in idle mode at 2V and 1MHz is about 0.04mA. The
1.2
0.8
0.6
0.4
0.2
1
0
0
Additional Current Consumption (percentage) in Active and Idle mode
×
(
1
Current consumption additional to
active mode with external clock
(see
2.3 %
1.4 %
6.7 %
+
0.1
0.061
Figure 21-1
0.2
+
0.104
0.3
Table 21-2 on page
+
ACTIVE SUPPLY CURRENT vs. LOW FREQUENCY
and
0.288
Figure
0.4
)
Frequency (MHz)
≈
0.06mA
21-2)
0.5
(PRR=0xFF)
0.6
186, third column, we see that we need to
Current consumption additional to
idle mode with external clock
(see
10.4 %
6.1 %
28.8 %
0.7
Figure 21-6
0.8
ATtiny24/44/84
0.9
and
Figure
1
5.5 V
5.0 V
4.5 V
4.0 V
3.3 V
2.7 V
1.8 V
Figure 21-6 on
21-7)
187