I've been looking into the power consumption of the Freedom KL25Z and the SDA portions are still drawing a lot of power even when the USB connection is unplugged.
I measured the current for P_SDA through J3 (cutting the trace on the back on the Rev C board). I get similar readings on the Rev E board.
- When I power the board through the SDA USB connection, the P_SDA current is 21 mA.
- When I power the board through the P5-9V_VIN connection the P_SDA current is 8.9 mA.
Is this second current normal? Is there a way to reduce it? It is still very large compared with the current of the KL25Z target MCU and LEDs.
I checked the /reset signal for the Debug MCU (SDA_RST) and it is asserted (0.5 V).
Thanks for any help!