Datasheet

1121
SAM9G15 [DATASHEET]
11052D–ATARM–31-Oct-12
45.3 Power Consumption
z Typical power consumption of PLLs, Slow Clock and Main Oscillator.
z Power consumption of power supply in four different modes: Active, Idle, Ultra Low-power and Backup.
z Power consumption by peripheral: calculated as the difference in current measurement after having enabled then
disabled the corresponding clock.
45.3.1 Power Consumption versus Modes
The values in Table 45-3 and Table 45-4 on page 1122 are estimated values of the power consumption with operating
conditions as follows:
z V
DDIOM
= 1.8V
z V
DDIOP0 and 1
= 3.3V
z V
DDPLLA
= 1.0V
z V
DDCORE
= 1.0V
z V
DDBU
= 3.3V
z TA = 25°C
z There is no consumption on the I/Os of the device
Figure 45-1. Measures Schematics
These figures represent the power consumption estimated on the power supplies.
Table 45-3. Power Consumption for Different Modes
(1)
Mode Conditions Consumption Unit
Active
ARM Core clock is 400 MHz.
MCK is 133 MHz.
All peripheral clocks activated.
onto AMP2
109
mA
Idle
Idle state, waiting an interrupt.
All peripheral clocks de-activated.
onto AMP2
38 mA
Ultra low
power
ARM Core clock is 500 Hz.
All peripheral clocks de-activated.
onto AMP2
8mA
Backup
Device only V
DDBU
powered
onto AMP1
8 µA
VDDCORE
VDDBU
AMP2
AMP1