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STM32F4 System-On-Module (SOM) Power Consumption Print

 

Here is some information regarding power consumption of the STM32F4 System-On-Module (SOM). All numbers listed in this note are mA @ 3.3V.

Here are some measurements from various practical Linux configurations running on the STM32F4 SOM:

SOM Configuration Test Power Consumption
SOM-STM32F4-xETH Linux running shell on serial console
Linux idle at serial console
79
SOM-STM32F4 Linux running shell on serial console
Ethernet enabled
Linux copying a file from a development host over NFS
140
SOM-STM32F4 Linux running shell on serial console
Ethernet enabled
Linux idle at serial console
106

To provide an upper limit on possible power consumption of the module, here is the Theoretically Calculated Max Power Consumption of the STM32F4 System-On-Module (SOM-STM32F4 variant).