Datasheet

260
7728G–AVR–06/10
ATtiny87/ATtiny167
24.3 Supply Current of I/O modules
The table below can be used to calculate the additional current consumption for the different
I/O modules Idle mode. The enabling or disabling of the I/O modules are controlled by the
Power Reduction Register. See Section 5.9.3 “PRR – Power Reduction Register” on page 47
for details.
24.4 Power-down Supply Current
Figure 24-8. Power-down Supply Current vs. VCC (Watchdog Timer Disabled)
Table 24-1. Additional Current Consumption for the different I/O modules (absolute values)
Module
Vcc = 5.0 V
Freq. = 16 MHz
Vcc = 5.0 V
Freq. = 8 MHz
Vcc = 3.0 V
Freq. = 8 MHz
Vcc = 3.0 V
Freq. = 4 MHz Units
LIN/UART 0.77 0.37 0.20 0.10 mA
SPI 0.31 0.14 0.08 0.04 mA
TIMER-1 0.28 0.13 0.08 0.04 mA
TIMER-0 0.41 0.20 0.10 0.05 mA
USI 0.14 0.05 0.04 0.02 mA
ADC 0.48 0.22 0.10 0.05 mA
POWER-DOWN SUPPLY CURRENT vs. V
CC
WA TCHDOG TIMER DISA BLED
0
5
10
15
20
25
30
1.5 2 2.5 3 3.5 4 4.5 5 5.5
V
CC
(V)
I
CC
(uA)
150
125
85
25
-40