This device driver controls MultiMediaCards (MMCs) and Embedded MultiMediaCards (eMMCs) by using the dedicated interfaces which are embedded in various MCUs.
This driver allows the updating and reading of data by calling user API functions. It is also an FIT module which supports our Firmware Integration Technology (FIT), so sample code for it is easy to integrate with user applications in combination with other FIT modules. Also, operation with DMAC or DTC transfer can be implemented by combining the driver with the DMAC FIT module or DTC FIT module. The driver is robust against mechanical vibration, so is suitable for industrial use.
- Conforming standard
JEDEC Standard JESD84-A441
JEDEC Standard JESD84-B50
- Bus interface
MMC mode (1-bit/4-bit/8-bit) is supported
- Number of MMC devices controlled
- Speed mode
The Backward-compatible and High-speed mode are supported.
- Microcontroller internal data transfer method
Either software, DMAC, or DTC transfer can be selected
- MCU-dependent portion
Separate interface functions are provided for different target MCUs.
- Memory capacity
Media up to 2 GB is supported with byte access mode, and media over 2 GB is supported with sector access mode.
- Memory control objects
Only a user area is supported
Boot area control is not supported
Latest Ver.: V1.04
Released: Feb. 1, 2019