Compatibility Matrix
This page lists the compatibility data currently documented in this repository (README.md, library.properties, and headers).
Arduino Architectures (from library.properties)
avrsamsamdesp8266esp32Simbleestm32nrf52
Boards and MCUs (documented as tested)
| MCU / family |
Example boards tested |
Notes |
| ATmega328P |
Uno, Micro, Fio, Nano |
Uses default SPI constructor by default |
| ATmega32u4 |
Leonardo, Fio v3 |
Wait for Serial before logging on boards that require it |
| ATmega2560 |
Mega |
Standard SPI use |
| ATSAMD21G18 |
Feather M0, Feather M0 Express, ItsyBitsy M0 Express |
Alternate SPI interface constructor supported |
| AT91SAM3X8E |
Arduino Due |
Dedicated SAM path in library |
| nRF52832 |
Adafruit nRF52 Feather |
Included in supported architectures |
| ATSAMD51J19 |
Adafruit Metro M4 |
Included in tested list |
| STM32F091RCT6 |
Nucleo-F091RC |
STM32 architecture macro path |
| STM32L0 |
Nucleo-L031K6 |
Added in v3.4.0 changelog |
| ESP8266 |
Adafruit Feather ESP8266, Sparkfun ESP8266 Thing |
Uses ESP8266 architecture branch |
| ESP32 |
Adafruit Feather ESP32, Sparkfun ESP32 Thing |
May require explicit CS and custom SPI pins |
| Simblee |
Sparkfun Simblee |
Listed as tested |
Flash Chip Compatibility (documented as tested)
| Manufacturer |
Parts listed in repo docs/changelog |
| Winbond |
W25Q16BV, W25Q64FV, W25Q64JV, W25Q80BV, W25Q256FV |
| Microchip |
SST25VF064C, SST26VF016B, SST26VF032B, SST26VF064B |
| Cypress/Spansion |
S25FL032P, S25FL116K, S25FL127S |
| ON Semiconductor |
LE25U40CMC |
| AMIC |
A25L512A0 |
| Micron |
M25P40 |
| Adesto |
AT25SF041 |
| Macronix |
MX25L4005, MX25L8005 |
| GigaDevice |
GD25Q16C |
SFDP note
The library can support more flash chips through SFDP discovery when USES_SFDP is enabled in SPIMemory.h.
FRAM Compatibility (documented as tested)
| Manufacturer |
Part |
| Cypress/Spansion |
FM25W256 |
Constructor Compatibility Notes
SPIFlash(uint8_t cs) and SPIFram(uint8_t cs) are the default constructors.SPIFlash(uint8_t cs, SPIClass *spiinterface) and SPIFram(uint8_t cs, SPIClass *spiinterface) are used on multi-SPI platforms.SPIFlash(int8_t *SPIPinsArray) is intended for custom SPI pin routing (ESP32-style use cases).
Before You Buy a New Chip
- Check if the manufacturer is already in the tested list.
- Check if the part is SFDP-compatible (for flash).
- Plan to validate with
FlashDiagnostics example and error codes on your target board.