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STM32F7 System-On-Module (SOM) Power Consumption Print

 

Here is some information regarding power consumption of the STM32F7 System-On-Module (SOM). All numbers listed in this note are mA @ 3.3V.

Some measurements from various practical Linux configurations running on the STM32F7 SOM are provided in the table below:

SOM Configuration Test Power Consumption
SOM-STM32F7 Linux running shell on serial console
Ethernet unplugged
Linux idle at serial console
120.4
SOM-STM32F7 Linux running shell on serial console
Ethernet enabled
Linux idle at serial console
128.4
SOM-STM32F7 Linux running shell on serial console
Ethernet enabled
Linux copying a file from a development host over NFS
189.5
SOM-STM32F7 Linux "suspended to RAM" (low-power mode) < 2

To provide an upper limit on possible power consumption of the module, here is the Theoretically Calculated Max Power Consumption of the STM32F7 System-On-Module (SOM-STM32F7 variant).