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Renesas RZ/A3UL Powerful 1GHz 64-Bit MPUs

With RTOS Support That Enables High-Definition HMI, Quick Startup and Excellent Cost Performance

Renesas RZ/A3UL Microprocessors (MPUs) allow customers to achieve the full potential of a real-time operating system (RTOS) while leveraging the performance boost provided by the 64-bit Arm® Cortex®-A55 CPU core with a maximum operating frequency of 1 GHz.

This MPU integrates an Octal-SPI memory interface that facilitates simpler and more compact board designs. In addition, the RZ/A3UL includes versions that support a DDR3L/DDR4 memory interface to enable connection of high-speed DRAM.

Using an RTOS allows systems to start up instantly, in less than a second after boot-up. This feature is ideal for systems that require a fast response time such as industrial equipment, home appliances and office automation equipment with liquid crystal displays or control panels, as well as audio equipment and POS terminals.


  • Cortex-A55 (Single)
  • LCD Controller
  • Camera interface (MIPI-CSI)
  • Display interface (Parallel-IF)
  • USB2.0 interface 2ch, SD interface 2ch
  • CAN interface (CAN-FD)
  • Gigabit Ethernet 2ch
  • Memory error detection / correction (ECC)
  • OctaRAM or DDR4/DDR3L memory interface
  • BGA package (13 x 13mm)


RTOS-based applications requiring high performance immediately after speedy wake-up

  • Simple camera/Display HMI
  • IoT Gateway/Controller
  • Voice/Sound Device
  • POS system
  • White Goods
  • Industrial (Programmable) Display


  • Enables speedy wake-up in simple HMI, IoT Gateway/Controller and Voice/Sound devices.
  • Provides a cost-effective solution for customers while satisfying high performance at 1GHz frequency on 64bit CPU.
  • Easy to use, no need to require high speed design of memory interface for Octal
  • DDR3L/4 memory interface is for high resolution HMI system which needing high-throughput memory bandwidth.
  • Provides a wide range of S/W packages and compact systems that can be built at low cost.
  • Easy to expand a product lineup across OS types and CPU core architecture.

RZ/A3UL Block Diagram

Renesas — RZ/A3UL Block Diagram


Renesas RZ/A3UL Evaluation Board Kit

Renesas RZ/A3UL Evaluation Board Kit is ideal for evaluating RZ/A3UL. The RZ/A3UL Evaluation Board Kit consists of a module board (SOM) and a carrier board. The carrier board can be commonly used with RZ/G2UL, RZ/Five and RZ/G2L modules (SOM) prepared according to the SMARC v2.1 standard. This allows you to experience seamless and flexible evaluation between these devices.

Two types of evaluation boards are available: QSPI version and Octal-SPI version. For each version, there are two types: J link lite included type and J link lite not included type. Please select according to your needs.

Renesas — RZ/A3UL Evaluation Board Kit

RZ/G2UL, RZ/A3UL, RZ/Five SMARC Module Board User's Manual: Hardware

QSPI version: Memory configuration/ QSPI Serial Flash(Boot) + DDR4

  • On-chip debugging emulator (J link lite) included Type name / RTK9763U02S01002BE
  • On-chip debugging emulator (J link lite) not included Type name / RTK9763U02S01000BE

Octal-SPI version: Memory configuration/ Octa Flash(Boot) + OctaRAM + DDR4

  • On-chip debugging emulator (J link lite) included Type name / RTK9763U02S01003BE
  • On-chip debugging emulator (J link lite) not included Type name / RTK9763U02S01001BE


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