Renesas Launches MPU for Cost-Sensitive Home Appliances, Automation, Healthcare, Building Control Applications

Built-in 128MB DDR3L SDRAM for System Cost Reduction with 30fps Video/Animation and Camera Display up to 1280×800 Resolution

TOKYO, Japan, May 19, 2025 ― Renesas Electronics Corporation (TSE:6723), a premier supplier of advanced semiconductor solutions, today introduced a new high-performance microprocessor (MPU) in the RTOS-based RZ/A series that meets the growing demands of advanced human-machine interface (HMI) systems. The new RZ/A3M MPU comes with large SDRAM, SRAM and RTOS support to facilitate the seamless execution of complex tasks and real-time graphical displays. The RZ/A3M drives video and camera output on large LCD panels with resolutions up to 1280×800, addressing the display requirements in next-generation home appliances, industrial and office automation, healthcare devices and building control systems.

Similar to its existing RZ/A3UL, the RZ/A3M features a 64-bit Arm® Cortex®-A55 core with a maximum operating frequency of 1 GHz and 128 KB (kilobytes) of on-chip SRAM. By integrating high-speed 128MB DDR3L-SDRAM in a single System-in-Package (SiP), the device eliminates the complex task of designing a high-speed signal interface for connecting external memory.

Reducing System Cost with Built-in Memory and Simplified PCB Design

The RZ/A3M is designed to reduce system costs and accelerate development. It supports both external NAND and NOR flash via QSPI for data and code storage. Paired with a driver, high-capacity NAND flash offers a cost-effective option for memory expansion. Additionally, the RZ/A3M’s BGA package has a unique pin layout with two main rows positioned on the outside edge. This layout simplifies PCB routing and enables a low-cost, dual-layer printed wiring board design, providing significant cost and time savings. This memory integration simplifies PCB design by reducing the routing complexity and minimizing layout constraints.

“I’m pleased to launch the RZ/A3M, the first RZ product with large built-in memory targeting high-function video/animation HMI performance while keeping overall system costs low,” said Daryl Khoo, Vice President of the Embedded Processing Marketing Division at Renesas. “In addition, we aim to deliver a highly responsive user experience with high-quality, real-time graphics, and provide the ease of design and cost efficiency to help our customers build advanced HMI solutions quickly.”

Comprehensive Development Environment

Renesas offers a comprehensive HMI development environment that includes the Flexible Software Package (FSP), evaluation kits, development tools, and sample software. Graphical user interface (GUI) solutions from partner companies such as LVGL, Crank, SquareLine Studio, and Envox will be available for the RZ/A3M to facilitate rapid HMI graphics development.

Key Features of RZ/A3M

• Arm Cortex-A55 CPU with a maximum operating frequency of 1GHz
• 128KB SRAM with error correction, Built-in 128MB DDR3L SDRAM
• Graphics capabilities: LCD controller supporting resolutions up to 1280×800 (WXGA), parallel RGB and MIPI-DSI (4-lane) interfaces, 2D graphics drawing engine
• Peripheral functions: QSPI interface for serial NOR/NAND flash memory, SPI, I2C, SDHI, USB2.0, I2S, temperature sensor, timer
• Package: 244-pin LFBGA, 17mm x 17mm, 0.8mm pitch

Renesas’ Comprehensive HMI Solutions

Renesas offers a wide variety of HMI solutions ranging from the 32-bit RX and RA MCU families to the 64-bit RZ family supporting 4K displays. The RZ/A series, built on RTOS-based MPUs with fast startup, includes the new RZ/A3M, which delivers high-performance HMI capabilities with the same ease of use offered by MCUs using large memory capacity.

Multi-HMI Winning Combination

Renesas offers Multi-HMI Solution which combines the new RZ/A3M MPU with numerous compatible devices from its portfolio to offer HMI functions for appliances. These Winning Combinations are technically vetted system architectures from mutually compatible devices that work together seamlessly to bring an optimized, low-risk design for faster time to market. Renesas offers more than 400 Winning Combinations with a wide range of products from the Renesas portfolio to enable customers to speed up the design process and bring their products to market more quickly. They can be found at renesas.com/win.

Availability

The RZ/A3M is available in volume production today along with the FSP, evaluation kits and development tools. More information is available at: https://www.renesas.com/products/microcontrollers-microprocessors/rz-mpus/rza3m-powerful-1ghz-mpus-built-ddr3l-sdram-high-definition-hmi