Pin Allocations for External SPI device on ESP32-C6-MINI-1U-H4/H8
Posted: Tue Mar 03, 2026 5:42 am
Hi All
I have posted this question together with another and have decided rather to make it a dedicated subject.
I need to add an external Ethernet device (Wiznet W5100S module or similar) with a SPI interface to a ESP32-C6-MINI-1U-H4/H8 module.
The IO pins for the external SPI W5100S module I have used are as follows:
IO18 (Pin 24) - MOSI
IO19 (Pin 25) - MISO
IO21 (Pin 27) - SCLK
IO22 (Pin 28)- INTn
IO23 (Pin 29) - CSn
I have some options with the I/O's n this area to switch pin functions if necessary.
IO20 (Pin 26) and IO15 (Pin 20) are available as they are not used at the moment.
Will this selection work?
If not what IO pins should I use?
Many thanks
BJ
I have posted this question together with another and have decided rather to make it a dedicated subject.
I need to add an external Ethernet device (Wiznet W5100S module or similar) with a SPI interface to a ESP32-C6-MINI-1U-H4/H8 module.
The IO pins for the external SPI W5100S module I have used are as follows:
IO18 (Pin 24) - MOSI
IO19 (Pin 25) - MISO
IO21 (Pin 27) - SCLK
IO22 (Pin 28)- INTn
IO23 (Pin 29) - CSn
I have some options with the I/O's n this area to switch pin functions if necessary.
IO20 (Pin 26) and IO15 (Pin 20) are available as they are not used at the moment.
Will this selection work?
If not what IO pins should I use?
Many thanks
BJ