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STM32WB55 current draw with BLE

kcire L.
Associate III

‎2021-09-07 07:16 AM

Hello,

I am trying to understand the datasheet regarding current draw of the STM32WB55 during BLE transmission. I see TX maximum output power consumption (SMPS Bypass) 12.7mA but what I don't understand is... does this include the Cortex M4 processing along with the M0?

Could I assume in this configuration a program transmitting a BLE stream (running at 64MHz) I would read ~12.7mA (MAX) from the power supply?

Thanks

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Remi QUINTIN
ST Employee

‎2021-09-28 12:02 PM

12.7 mA is indeed the complete power consumption level of the STM32WB (both M4 and M0+ and all peripherals).

Note that it is an average. You may see higher peaks of current for a short time when an RF activity is on-going.

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