Overview
Description
The eMMC/SFMA Extension Board can be used with the RH850 Generation 2 Main Board. It provides an eMMC card interface and a serial memory interface (SFMA) for external NOR or NAND serial flash memory. It is intended for use as an add‑on board and expands the main board’s evaluation capabilities without changing the core hardware configuration.
Features
- 512Mbit SFMA serial NOR flash memory
- 4GB eMMC flash memory
- Each memory can be enabled separately via a jumper
Applications
Documentation
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| Type | Title | Date |
| Manual - Development Tools |
PDF
4.47 MB
The RH850 Main Board is an expansion board to the RH850 MCU piggyback boards adding multiple communication interfaces. The board includes transceivers for standard interfaces (CAN, LIN, SENT, FlexRay) as well as Pmod ports for extension boards, and provides connectors for add-on boards with high-speed communication interfaces (CAN-XL, Ethernet), for TFT or OLED displays and motor control ports. The main board has a single 12V power supply that can also be used to power connected piggyback boards.
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| Application Note |
PDF
882 KB
AI-generated Summary:
The RH850/F1Kx series integrates a Serial Flash Memory Interface A (SFMA) to connect external NOR or NAND serial flash memories via SPI protocol. SFMA supports SPI operation mode for read/write and an external address space read mode for read-only access. It manages clock supply, reset, and registers to control communication with flash memory. The interface supports 1-, 2-, and 4-bit data buses, with 4-bit recommended for optimal performance. SFMA handles commands, addresses, and dummy cycles for efficient flash memory operations. The document details SFMA configuration, operation modes, signal descriptions, and bit rate calculations.
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Design & Development
Software & Tools
Software & Tools
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Software type
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Company
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| CS+ Renesas integrated development environment (IDE) [Support MCU/MPU: RH850, V850, RX, RL78, 78K0R, 78K0]
(Note: CS+ is not generally promoted to U.S. and European customers.)
(Note: To use Smart Configurator on CS+ for RL78/G23 and RX family MCUs, install the Smart Configurator for each MCU family separately downloading from ”Design & Support” > ”Development Tools” > ”Smart Configurator”)
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IDE and Coding Tool | Renesas |
| RH850 Smart Configurator RH850 Smart Configurator is an automatic driver generation tool for internal peripheral I/O modules through GUI settings.
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Solution Toolkit | Renesas |
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Sample Code
Related Boards & Kits
Boards & Kits
RH850 Generation 2 Mainboard of RH850 Evaluation System
The RH850 Generation 2 Mainboard provides communication interfaces to the RH850 Piggyback boards. The modular RH850 Evaluation System, comprising mainboards and piggyback boards, serves as a platform for evaluating the features and performance of Renesas' 32-bit RH850 microcontrollers.
Product Options
| Part Number | Status | Stock | Sampleable | Pb (Lead) Free | ECCN (US) | HTS (US) |
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| Y-RH850-EMMC-SFMA-EXT-BRD | Active | Out of Stock | N/A | No | 3A991.a.2 | 8471.50.0150 |
Resources
Support
Support Communities
- Sample Application eMMC for Y-RH850-EMMC-SFMA-EXT-BRD
... sample application for SFMA and don't see eMMC. Is there ok if I use MMCA driver to read/write data to that device Y-RH850-EMMC-SFMA-EXT-BRD.And Are you have Guideline to setting for EMMC use case in below picture SFMA signal is same with ...
Sep 12, 2025 - SFMA(Serial fash memory Interface A ) for External Flash .
Hello, I am having a trouble working on SFMA2 module on RH950(R7F701441) controller. I have two External flash devices say EF1 and EF2 connected to my controller. The SFMA0 module is used to communicate with EF1 and the SFMA2 Module is being used to communicate with the EF2. I ...
May 21, 2024 - Configuration of QSPI in SFMA module for External Flash.
Hi, I am currently working on he SFMA0 module of the RH850(R7F701441) controller and the external flash is Giga Device. In the SFMA0 i am successfully able to read, write and erase operation in the standard SPI mode (1 bit).But when i try to access the External Flash ...
May 23, 2024
Support Communities
Knowledge Base
