Radxa CM3J SoM with Rockchip RK3568J SoC Offers LPDDR4x RAM, Wi-Fi 5, and Bluetooth 5.0 for Industrial Applications

Radxa CM3J is a SoM targeted at industrial use and shares the Raspberry Pi Compute Module 4 form factor. It is based on Rockchip RK3568J, a 64-bit quad-core Cortex-A55 processor running at 2.0GHz, and has support for an extended temperature range. The module includes up to 8GB LPDDR4x RAM and up to 256GB eMMC flash. Wireless specifications are IEEE 802.11 b/g/n/ac Wi-Fi 5 with an external antenna connector and Bluetooth 5.0 with BLE support.

The CM3J is an improved version of Radxa’s CM3, the latter being rooted in the RK3566 SoC. As compared to CM3, CM3J has fewer interfaces and two board-to-board connectors and is optimized for industrial use. It can be regarded as the cost-optimized version of CM3i that employs the same RK3568 processor but contains four B2B connectors.

For display output, the CM3J has support for HDMI TX, dual MIPI DSI, and LVDS. On the other hand, the reference CM3 also has other interfaces like eDP and RGB/BT1120. Storage features on the CM3J include onboard eMMC, SPI Flash, and SDMMC, with the CM3 having support up to 512GB of eMMC. The CM3J is ideal for embedded and industrial systems that demand stable performance and long-term support.

Radxa CM3J Specifications:

• SoC: Rockchip RK3568J quad-core Cortex-A55 @ 2.0GHz
  • Arm Mali-G52 2EE GPU
  • 1 TOPS AI accelerator
• Memory: Up to 8GB LPDDR4/LPDDR4x
• Storage:
  • Up to 256GB eMMC 5.1 flash
  • 1x SPI flash (bootloader)
  • 1x SDMMC0 interface
  • SDIO 3.0 support
• Display:
  • 1x HDMI TX up to 4096×2160 @ 60Hz (4K60)
  • 1x 2-lane MIPI DSI for MIPI LCD
  • 1x 4-lane MIPI DSI for MIPI LCD
  • 1x 4-lane LVDS (multiplexed with 1x MIPI DSI0)
  • Video decode: H.265/H.264/VP9 up to 4K@60fps
  • Video encode: H.264/H.265 up to 1080p@100fps
• Camera:
  • 2x 2-lane MIPI CSI
  • 1x 4-lane MIPI CSI
• Audio: I2S, SPDIF_TX, PDM (supports mic arrays)
• Networking:
  • Gigabit Ethernet PHY (Realtek RTL8211FSI-VS)
  • Wi-Fi 5 (802.11 b/g/n/ac) with external antenna support
  • Bluetooth 5.0 with BLE
• USB: 1x USB 2.0 OTG/HOST
• Expansion:
  • 2x 100-pin board-to-board connectors
  • 1x PCIe Gen2 x1 (5Gbps)
  • UART, SPI, I2C, GPIO, I2S, CAN Bus
• Security:
  • Arm TrustZone, Secure Boot, OTP
  • Secure JTAG, Secure Video Path
  • Hardware crypto: AES, TDES, SM4, SM3, SHA256/512, RSA
• Power: 5V DC input
• Operating temperature: -40°C to 85°C
• Dimensions: 55 x 40 mm

Radxa CM3J is equipped with an Arm Mali-G52 GPU that supports OpenGL ES 1.1/2.0/3.2, OpenCL 2.0, and Vulkan 1.1. The module has been tested for compatibility with several carrier boards, including the official Raspberry Pi CM4 IO Board, WaveShare CM4-POE-UPS-BASE, CM4-IO-BASE-B, and CM4-NANO-B. Other Raspberry Pi CM4-compatible carrier boards may also be supported. Software support includes Debian and Android. Technical documentation and a getting-started guide can be found on the Radxa Wiki pages.

Previously, we covered several compute modules such as the LattePanda Mu, Orange Pi Compute Module 5, and LuckFox Core3566. Feel free to check those out if you’re interested in similar products.

Radxa CM3J compute module is available in six variants, all with an AP6745 Wi-Fi module, different RAM capacities (2GB, 4GB, or 8GB), and storage options (eMMC vs SPI flash). Radxa sells the CM3J with eMMC flash on AliExpress starting at $45.01 with the 2GB/8GB model, and on Arace starting at $50 for the 4GB RAM/16GB eMMC variant. Additional information may also be found on the product page.

Please follow and like us: