Datasheet

SAM9G20
DS60001516A-page 740  2017 Microchip Technology Inc.
40.3 Power Consumption
• Typical power consumption of PLLs, Slow Clock and Main Oscillator
• Power consumption of power supply in four different modes: Active, Idle, Ultra Low-power and Backup
• Power consumption by peripheral: calculated as the difference in current measurement after having enabled then disabled the corre-
sponding clock
40.3.1 Power Consumption versus Modes
The values in Table 40-3 and Table 40-4 are estimated values of the power consumption with operating conditions as follows:
•V
DDIOM
= V
DDIOP
= 3.3V
•V
DDPLL
= 1.0V
•V
DDCORE
= V
DDBU
= 1.0V
•T
A
= 25°C
• There is no consumption on the I/Os of the device
Figure 40-1: Measures Schematics
These figures represent the power consumption estimated on the power supplies.
Table 40-3: Power Consumption for Different Modes
Mode Conditions Consumption Unit
Active
Arm Core clock is 400 MHz.
MCK is 133 MHz.
All peripheral clocks de-activated.
onto AMP2
50 mA
Idle
Idle state, waiting an interrupt.
All peripheral clocks de-activated.
onto AMP2
20 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
9µA
VDDCORE
VDDBU
AMP2
AMP1