Boardcon EM3326S is a single board computer powered by a Rockchip RK3326-S quad-core Cortex-A35 processor paired with up to 4GB LPDDR4 memory and 128GB eMMC flash.
With a 3.5mm audio jack and a speaker connector, Fast Ethernet, WiFi, and Bluetooth connectivity, the company says the board mainly targets smart audio applications. But it could certainly be used for a wider range of applications with RGB LCD and MIPI DSI display interfaces, MIPI CSI and DVP camera interfaces, an RS485 terminal block, a mini PCIe socket plus a SIM card slot for 4G LTE connectivity, and more.
Boardcon EM3326S specifications:
- SoC – Rockchip RK3326-S
- CPU – Quad-core Cortex-A35 @ 1.5GHz with 512KB L2 cache
- GPU – Arm Mali G31-2EE with support for OpenGL ES 1.1/2.0/3.2, DirectX 11 FL9_3, OpenCL 2.0, and Vulkan 1.0
- VPU
- Video Decoder – MPEG-4, H.264, H.265/HEVC, VP8, VC-1 up to 1080p60
- Video Encoder – H.264 video encoder up to 1920×1080 @ 30 fps, or 2x 720p @ 30fps
- System Memory – 1GB, 2GB, or 4GB LPDDR4
- Storage
- 8GB, 16GB, 32GB, 64GB, or 128GB eMMC flash
- MicroSD card slot (Multiplexed with Debug serial port)
- Display
- 26-pin LVDS/MIPI-DSI header
- 40-pin RGB LCD FPC connector
- Audio
- 3.5mm Audio in/out jack
- 2-pin speaker connector
- Camera
- 24-pin 4-lane MIPI CSI FPC connector
- 20-pin 8-bit DVP camera header
- Networking
- 10/100 Mbps Ethernet RJ45 port via Realtek RTL8152B controller
- 2.4GHz WiFi 4 802.11b/g/n and Bluetooth 4.2 + external WiFi antenna
- Optional 4G LTE via mini PCIe socket and Nano SIM card slot
- USB
- Micro USB 2.0 OTG port (Multiplexed with USB host/Ethernet/4G LTE)
- 2x USB 2.0 host ports
- Serial
- 3-pin RS485 terminal block
- 3-pin serial port for debugging (multiplexed with SD card)
- Expansion
- Recovery, Power, GPIO, and ADC expansion connector
- 2x SPI connectors
- GPIO and DVP header
- Misc
- Recover, Power, and Reset buttons
- RTC battery
- IR recevier
- Power Supply
- 5V/3A DC input jack
- 4.2V Lithium-ion battery connector
- Dimensions
- CPU module – 45 x 37 mm
- Baseboard – 110 x 85mm
- Temperature Range –  0°C to +70°C
Boardcon provides support for Android 12 and Debian 11 for the board with fairly old Linux kernel versions: 4.19 and 5.10. It’s not exactly new since it was introduced in 2022, but I had never noticed the RK3326-S so far. I found it in another new product (article coming), so I decided to look into it.
The RK3326-S is an update to the RK3326 SoC found in products such as the ODROID-GO Advance. The main differences are the 512 KB unified L2 cache instead of 256 KB and support for LPDDR4 memory. The latter is probably why the packages are different, but likely pin compatible: the RK3326-S comes in a 14x14mm TFBGA418L package, while the older RK3326 is available in a 14x14mm TFBGA395L package. Check the datasheet for more details.
More details about the EM3326S SBC and the CM3326S system-on-module can be found on the product page.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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