ESP8266 Community Forum

- Sun May 27, 2018 8:04 am #76105 The ESP is really 26MHz, so it is impossible to get this clock divided to 12MHz.

- Sun May 27, 2018 3:49 pm #76115 The 26MHz is the crystal frequency. Internally a pll generates a 160MHz clock which feeds the logic including the i2s circuitry.

This still doesn't allow you to get 12MHz accurately but I think one could get 12.3

- Sun May 27, 2018 4:17 pm #76118 The 26MHz oscillator could be changed.

Currently, the frequency of crystal oscillators supported include 40MHz, 26MHz and 24MHz. The accuracy of crystal oscillators applied should be ±10PPM

https://www.elecrow.com/download/ESP-12F.pdf

- Mon May 28, 2018 1:49 am #76124 Hi,

But how to get 12.3 using Arduino?....