Datasheet

Feather M0 Bluefruit LE

If you have a Feather M0 Bluefruit LE then you have an

ATSAMD21 chip with Hardware SPI, CS = 8, IRQ = 7,

RST = 4

Bluefruit LE SPI Friend

If you have a stand-alone module, you have a bit of

flexibility with wiring however we strongly recommend

Hardware SPI, CS = 8, IRQ = 7, RST = 4

You can use this with just about any microcontroller with

5 or 6 pins