Quad-Core 64-bit IoT Core Board

The Core-3308BY, powered by the Rockchip RK3308B series processor, is a compact Internet of Things (IoT) core board featuring
castellated holes. It supports Buildroot+QT and a variety of speech systems and services. This product provides a wide range of
interface options and boasts exceptional capabilities of display driver. Commercial, industrial, and automotive-grade core boards
are available to meet diverse needs across various scenarios.

Quad-core 64-bit IoT processor

Rockchip RK3308 series processor is based on an ARM quad-core 64-bit Cortex-A35 with a frequency of 1.3 GHz. It is integrated
with a high-performance audio CODEC and voice activity detection (VAD) and is capable of handling an 8-channel analog
microphone array. This configuration ensures powerful audio processing capabilities.

Expanded audio connectivity
Enhanced speech interaction

This device boasts a wide range of audio interfaces, including I2S/TDM (8 channels), PDM (8 channels), I2S/PCM (2 channels),
SPDIF, HDMI ARC, and Line Out. It also provides various expansion interfaces such as PWM, I2C, UART, SPI, I2S, and ADC. These
interface options facilitate voice interactions, audio input and output processing, as well as digital multimedia applications.
This core board supports accelerometers, temperature and humidity sensors, distance sensors, GPRS, and NB-IOT.

Powerful display capabilities

With exceptional capabilities for the display driver, the Core-3308BY supports 4-inch and 7-inch RGB/MCU displays offering 1280 x 720
resolution. It features multi-touch support, rapid response times, sensitive touch control, and smooth, stable operation,
making it ideal for human-computer interaction, smart home, and in-vehicle entertainment applications.

Support IoT systems and services

The Buildroot+QT embedded system and the ROS (Robot Operating System) feature low system resource consumption, boast rapid
boot times, and maintain stable and reliable operation. The device also supports multiple AI speech systems and services, such as
iFLYTEK and Amazon Alexa, providing direct integration into IoT and speech recognition.

Support Buildroot+QT application development

Our SDKs include a comprehensive suite of open-source QT applications such as music applications (compatible with MP3, WAV,
OGG, and more), video applications (compatible with MP4, AVI, FLV, and more), image viewers, and settings applications(multiple
control functions: WiFi connection, volume adjustment, brightness control, and language switching).

VOIP for interconnection

Without distance limitation, VoIP enables voice calls over the internet. It achieves sensitive word filtering and automatic call recording and
is extensively applied to finance, education, transportation, healthcare, and more.

Smart home, smart life

The touchscreen ensures human-computer interaction. Voice control and remote
management are supported. It is designed for integration into access control systems,
kitchens, household appliances, and bathrooms for a smart and convenient
living condition.

Robot vacuum cleaner

The device comes with PWM, I2C, SPI, and more interfaces, connecting various components such as LiDAR sensors, ultrasonic sensors,
infrared sensors, Hall effect sensors, and LED indicators. These facilitate the capabilities of robot vacuum cleaners, including accurate
positioning, obstacle avoidance, fall prevention, smart route mapping, smart alarm, and automatic recharging detection.

Mini design with castellated holes

The core board features a 136P castellated hole interface, maximizing data transfer and expandability.
It measures merely 45mm * 40.2mm to save more space. With high-quality components,
it delivers reliable performance, making it ideal for intelligent products.

High-performance IoT mainboard

The core board can be combined with a backplane to form a complete, high-performance IoT mainboard. With expanded interfaces
and enhanced capabilities, it can be directly applied to various smart products to accelerate product development.

Customization for commercial, industrial,
and automotive-grade products

Core boards in commercial, industrial, and automotive grades are available. The industrial-grade products operate within a wide
temperature range (-40°C to 85°C) for uninterrupted 24/7 stability, meeting industrial needs. The automotive grade supports
ADAS/DMS/BSD/APA multi-camera assisted driving and 4, 6, and 8 channels of wide-angle seamless stitching. It also enables a "one
screen for one system" display, advancing the development of smart vehicles.

Provide backplane reference designs

We provide backplane reference designs and technical information. So users can efficiently continue their secondary
development and rapidly launch independent and controllable products.

Abundant resources

Our comprehensive resources include SDKs, tutorials, technical documentation, and development tools to
streamline and enhance the development process.

A wide range of applications

The core board can be widely used in IoT, AI speech recognition, digital multimedia,
industrial control, smart home, automotive electronics, and more.

AI speech recognition
Digital multimedia
Industrial control
Smart home
Automotive electronics


Core-3308BY(Commercial) Core-3308JY(Industrial) Core-3308MY(Automotive)
Basic Specifications SOC




Quad-core 64-bit ARM Cortex-A35, 1.3GHz

DDR3 (256M / 512MB optional)


eMMC (4GB / 8GB optional)


Buildroot (Linux/QT) embedded system, ROS (Robot os)

Baidu DuerOS, aispeech, iFLYTEK, Amazon Alexa and more AI speech systems


Castellated holes (136Pin, 1.2mm pitch)


45mm × 40.2 mm


Operating temperature: -20℃~60℃

Operating humidity: 10%~90%RH


Operating temperature: -40℃~85℃

Operating humidity: 10%~90%RH (non-condensing)

Interface Specifications Network

Integrated 10/100 MAC Ethernet controller, capable of extending to 100Mbps Ethernet

Through SDIO 3.0, a 2.4GHz WiFi/BT module expansion is available and 802.11a/b/g/n/ac is supported.

Video Input

Support image output processing VOP with RGB666 (that is liquid crystal display controller(LCDC ) ),

and RGB/MCU displays (up to 1280 * 720 resolution)


2 * I2S/TDM (8ch), 1 * PDM (8ch, supporting multi-MIC arrays), 1 * I2S/PCM (2ch)

1 * Lineout, 1* SPDIF TX (8ch), 1 * SPDIF RX (8ch, supporting HDMI ARC )


1 * USB 2.0 (Host)、1 * USB2.0(OTG)


32-bit watchdog timer


4 * I2C, 5 * UART, 3 * SPI, 11 * PWM(with multiplexing), 6 * ADC

* Support modules such as accelerometers, temperature and humidity sensors, distance sensors, GPRS, and NB-IoT modules.