Overview
Description
The RZ/A3UL allows 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. It integrates an Octal-SPI memory interface that facilitates simpler and more compact board designs. In addition, it 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.
Features
- 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)
Comparison
Applications
Design & Development
Software & Tools
Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
Support Communities
-
Gcov Integration In e2Studio with RZ/A3UL
I've researched about integrate gcov with RZ/A3UL board in e2studio with type blinky project. Could you please help me share materials about method integrate GCOV in RZ series?Thank you.
Feb 13, 2025 -
RZ/A3UL EVK - Unable to read correct values from ADC Channel 1
Hello, I am testing out the ADC Example Project for the RZ/A3UL Octal Edition Evaluation Kit, and reading values from ADC_CHANNEL_0 works fine, however, if I adjust the code to read from CH1 I get incorrect values. The only line of the code which I adjusted ...
Apr 25, 2024 -
"Jlink RTT is not supported for this setup" and "Jlink RTT Viewer cannot read the buffer" issue for rz/a3ul (CA55 Core) project.
Hello everyone!We are trying to print logs using the latest Segger RTT version. Our project uses the rz/a3ul (CA55 Core) which is supported as mentioned in the " wiki.segger.com/J-Link_ARMv8-AR " link. We attempted to use below solution: Using the J-link script ...
Mar 12, 2024
FAQs
-
RZ/A3UL: Self refresh mode for DDR
RZ/A3UL dose not support the self refresh mode for DDR interface.
Aug 23, 2022 -
Octal-SPI Flash available for RZ/A2M, RZ/A3UL
The Octal-SPI Flash which can be connected to RZ/A2M and RZ/A3UL is products which supports the ‘Octa Peripheral Interface’ (OPI) proposed by Macronix. Specifically, those are products of Macronix, so please refer to the Macronix's website.
Dec 20, 2023 -
Octal-SPI RAM available for RZ/A2M, RZ/A3UL
Last Updated: 08/29/2025 Question: Tell me about the Octal-SPI RAM available in RZ/A2M and RZ/A3UL. Answer: The Octal-SPI RAM which can be connected to RZ/A2M and RZ/A3UL is products which supports the ‘Octa Peripheral Interface’ (OPI ...
Aug 29, 2025
Videos & Training
The video time is just 1 minute.
RZ/A3UL supports FreeRTOS and Azure RTOS. As free of charge GUI tools, ‘Guiliani-Lite’ is available for FreeRTOS and ‘GUIX’ for Azure RTOS.
News & Blog Posts
Blog Post
Jul 21, 2023
|
Blog Post
Aug 4, 2022
|