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Overview

Description

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.

How to obtain

Features

  • 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
    One device/channel
  • 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

Target Devices

Documentation

Type Title Date
Application Note PDF 1.45 MB 日本語
1 item

Design & Development

Sample Code

Sample Code

Filters
Type Title Date Date
Sample Code
[Software=RX Driver Package|V1.47],[Toolchains=CC-RX|V3.07.00;GNURX|8.03.00.202411;|CCRX|5.10.1]
Log in to Download ZIP 49.85 MB
Application: Consumer Electronics, Industrial
Compiler: CC-RX, GNURX, ICCRX Function: Communication Interface, Driver or Library IDE: e2 studio, IAR EWRX
1 item

Additional Details

MultiMediaCard is a trademark of MultiMediaCard Association (MMCA)

Application Configuration

Image
MultiMediaCard / eMMC Driver for RX Family Application Configuration

Target Device & Product Lineup

Product NameRX Family MMC Mode MMCIF Driver Firmware Integration Technology
Target DeviceMultiMediaCard, eMMC
Target MCUsRX64M, RX651, RX65N, RX66N, RX71M, RX72M, RX72N
Integrated Development Environment
  • e² studio
  • CS+ for CC
  • IAR Embedded Workbench for Renesas RX (IAR Systems)
Supporting compiler
Evaluation Board

SD card slot or HMI Expansion Board*1 is required. You can evaluate the driver on any of the following kits.

*1 Please purchase HMI Expansion Board.

How to Obtain

The RX Driver Package provides the set of FIT modules. Obtain the package, and you can then download the set of FIT modules you require. Furthermore, FIT modules work in combination with the Smart Configurator, which eases both downloading of the FIT modules and embedding them in user applications.

MMC Driver

Target DeviceApplication Note Title
RX-family MCUs that support FIT modules and incorporate the MMCIFRX Family MMC Mode MMCIF Driver Firmware Integration Technology Rev.1.21 - Sample Code (ZIP)

Related Software

The MMC/e・MMC driver can be used with any of the following FAT file system software libraries.

SoftwareFeatures
FAT File System [M3S-TFAT-Tiny] for the RX FamilySupport is only for FAT12, FAT16, and FAT32.