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huwjones
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Last seen: 2 months 1 week ago
Joined: 2014-05-27 12:17
extended sleep current with JTAG boot

Dear Dialog,

Are sections of the DA14580 left active in extended sleep if the code has been booted from JTAG? I get very different quiescent current measurements if I use the UART and JTAG connection options with the SmartSnippets boot loader. I am measuring the current directly for the two cases. The UART boot results agree with the values reported by the Power profiler with UART/SPI boot. With a JTAG boot, the extended sleep current is around 350uA, with UART boot the extended sleep current is less than 2uA. The JLINK and UART connections are disconnected in both measurement instances.

Thanks and best wishes