10.1.9.2 System Power Consumption in Applicative Use Cases

Table 10-64 provides the processor power consumption in the following conditions:

  • fCPU_CLK = 800 MHz
  • fMCK = 266 MHz
  • I & D caches enabled
  • External SDRAM memory: DDR3L operating at 266 MHz
  • Use cases are run on Linux
  • Current consumptions are measured according to Figure 10-43. Note that external component current consumptions are not counted. Either the 24-bit display or the 8-bit image sensor is connected to the SAM9X7 Series device, but not both.
Table 10-63. Use Case Definition
Use CaseDescription
1After Linux boot root prompt
2Running 2D graphics benchmark with EGT monitor (800x480 DSI panel @ 46 fps) - 22% CPU usage
3SAM9X70 running as iPerf server
4Run Bonnie++ on USB mass storage
5Image sensor video recording with QVGA resolution - 10 fps
Figure 10-43. Current Measurement for Applicative Use Cases
Table 10-64. Power Consumption in Applicative Use Cases at TA = 25°C
Power InputVoltage Level (V)Power Consumption vs Use Case (mW)
#1#2#3#4#5
VDD_3V33.3165125165116330
VDDCORE1.15132132167207196
VDDIOM1.352743954153