Block Device Support List

Mbed CE features some useful generic block device drivers, such as SPIFBlockDevice for SPI flashes and I2CEEBlockDevice for EEPROMs. These drivers support a wide range of block devices. However, there is not a great reference of what specific part numbers have actually been tested with these drivers -- some memory chips do work while others do not comply with the standard and currently do not work.

To address this issue, this page will list which specific memory chips have been tested with which drivers.

SPIFBlockDevice (SFDP SPI flashes)

Part Number	Size	Results	Notes

QSPIFBlockDevice (QSPI flashes)

Part Number	Size	Results	Notes
Renesas AT25SF128A	16MiB	Works. Requires the following mbed_app.json settings in target_overrides: "qspif.QSPI_POLARITY_MODE": "QSPIF_POLARITY_MODE_1", "qspif.enable-and-reset": true	This flash needs special settings since it has a VERY basic SFDP table.

OSPIFBlockDevice (OSPI flashes)

Part Number	Size	Results	Notes

I2CEEBlockDevice (I2C EEPROMs)

Part Number	Size	Results	Settings
Microchip 24FC02-I/SN	2kiB	Works, but large reads have a problem. Fast Mode Plus not tested yet.	size=2048, address=0xA0, block=8, address_is_eight_bit=true
Microchip 24FC64-I/SN	64kiB	Works. Fast Mode Plus not tested yet.	size=65536, address=0xA0. block=32, address_is_eight_bit=false