# Hardware reference

Reference information for board wiring, memory, flash storage, and the ESP32-S31 hardware used by Linux.

For more hardware details, check out the [ESP32-S31 Technical Reference Manual](https://documentation.espressif.com/esp32-s31_technical_reference_manual_en.pdf).

```{toctree}
:maxdepth: 1

modules-and-boards
memory-map
flash-layout
isa
clock-tree
interrupt-routing
power-domains
```