[childintime]

Possibly a very nice chip. A couple of questions: - any ADC on board? - I presume it uses QSPI flash memory? - will the items be available on aliexpress?

[microcolonel]

I don't think it has a GP ADC on board, and the GPIO section only seems to talk about interrupts bus width configuration, so probably no ADC on those pins either; but the datasheet does mention an Audio Processing Unit "APU".

[veli_joza]

There's a I2S bus that's used for communicating with external component (audio codec) that has ADC/DAC. Perhaps APU is meant for that?