FET3399-C System on Module

CPU: Rockchip RK3399

Architecture: 2x Cortex-A72 + 4x Cortex-A53

Frequency: [email protected][email protected]


ROM: 16GB / 32GB eMMC

System: Linux4.4.189,Android7.1,ForlinxDesktop 18.04

Brief Message Compare

System on Module FET3399-C based on Rockchip RK3399

FET3399-C is a system on module (SoM) designed based on Rockchip RK3399 processor which consists of two Cortex-A72 featuring cores with frequency up to 1.8GHz and four Cortex-A53 featuring cores with frequency up to 1.4GHz. It's integrated with GPU Mali-T864, can support OpenGL ES1.1/ 2.0/ 3.0/ 3.1, OpenVG1.1, OpenCL and DX11. It has on-board 2GB LPDDR3 RAM and 16GB eMMC. Widely used in self-service terminal, edge computing, 5G smart terminal, POS machine, facial recognition and other fields.

Main Parameters of FET3399-C SoM

  • SoC - Rockchip RK3399 hexa-core processor with 2 Arm Cortex-A72s up to 1.8 GHz, 4 Cortex-A53s up to 1.4 GHz;
  • RAM - 2GB or 4GB LPDDR3;
  • ROM - 16GB or 32GB, eMMC;
  • Video output - HDMI 2.0, AV port, MIPI DSI connector;
  • OS - Linux 4.4, Android7.1, ForlinxDesktop 18.04;
  • Camera - MIPI-CSI connector, support for 1x 13 megapixel or 2x8 megapixel cameras;
  • USB - 2x USB Type-c, 2x USB 2.0 port;
  • Power input - DC 12V;
  • Dimensions - 46×70 mm.

Hexa-core Processor

FET3399-C SoM is based on Rockchip RK3399 processor which consists of two Cortex-A72
cores up to 1.8GHz and four Cortex-A53 cores up to 1.4GHz. GPU Mali-T864 can support
OpenGL ES1.1/ 2.0/ 3.0/ 3.1, OpenVG1.1, OpenCL, DX11; with 2GB LPDDR3 on-board RAM(4GB upgradable) and 16GB eMMC.

rk3399 hexa core development board pc
RK3399 development board 2 ARM Cortex-A72 cores, 4 ARM Cortex-A53 cores Pc Phone

Various AI Framework Supporting

FET3399-C Android7.1 is supported with Tensorflow Lite, Caffe and other related AI frameworks. The RK3399 is optimized with RKSSD specialy for
deep learning related applications with supporting of OpenCL and RGA hardware engines to lower power consumption.

RK3399 AI framework pc
RK3399 AI framework phone


4K VP9 and 4K 10bits H265/H264 video decoders, up to 60fps; Video post processor: de-interlace, de-noise, enhancement for edge/detail/color

RK3399 4K output pc
RK3399 4K output phone

Multiplex display interfaces, can support dual-screen synchronous or asynchronous playing

Dual VOP: one supports 4096x2160 with AFBC supported; the other supports
2560x1600; Dual channel MIPI-DSI (4 lanes per channel); eDP 1.3 (4 lanes with 10.8Gbps)
to support display, with PSR; HDMI 2.0a for 4K 60Hz with HDCP 1.4/2.2; DisplayPort 1.2 (4 lanes, up to 4K 60Hz).

RK3399 dual screen output
RK3399 dual screen output

Dual ISP

Dual hardware ISP, can support up to one 13MPix/ s or dual 8MPix/ s, can support dual cameras input

RK3399 dual ISP PC
RK3399 dual ISP Phone

High-speed connectors, OSP and misplug-proof designing

SoM can be mounted to carrier board via four 80-pin ultra thin connectors with strong OSP performance,
which guarantees high signal transaction reliability and protects contacts from touching and stain;
Misplug-proof designing to avoid SoM failure by misplug operation.

RK3399 motherboard PC
RK3399 motherboard Phone

Carrier Board OK3399-C Interface Display

FET3399-C supporting carrier board OK3399-C is rich in interface resources,
including HDMI2.0, MIPI-DSI, eDP1.3, DP1.2 and other display interfaces, with a resolution of up to 4K. Dual-screen both synchronous and asynchronous playing are well supported.
Besides, it carries PCIe, USB3.0 Host, Type-C, MIPI-CSI, SPDIF, IIC, SPI, UART, ADC, PWM, GPIO, IIS(8 digital micphone array input) and Ethernet on board.

OK3399-C development board Pin Diagram
Front interface diagram of rk3399 development board Interface diagram on the back of the rk3399 development board

Note*: OK3399-C single board computer consists of SoM FET3399-C and carrier board

Powerful and various communication channels

OK3399-C has on-board Gigabit Ethernet interface, can support 2.4GHz & 5GHz WiFi, BT5.0, and also it's preserved with mini PCIe package for 4G LTE.

RK3399 network
RK3399 network

Easy for evaluation and development

All pins except standard peripherals are all drawn out by pin connectors with pitch of 2.54mm, including SPIx 2, IIC,
ADCx 2, GPIOx 4. 2 USB2.0 Host are expanded by XH2.54 connectors which can be mounted with binocular camera or be used for serial expansion.

RK3399 evaluation board pc
RK3399 evaluation board phone

Easy for installation

OK3399-C is available with 2 structures with dimension difference. 130x 155mm and 130x 140mm, the
former one can fit a standard aluminum enclosure and the later compact one for user-defined enclosure.

OK3399-C sbc dimension
OK3399-C sbc dimension

▊ Product Video

OK3399-C SBC Demo | Rockchip RK3399 processor based

▊ FET3399-C SoM Features


RK3399 Hexa-core, Big.Little architecture
Cortex-A72 Core:
• 2x Cortex-A72
• up to 1.8GHz
• 64-bit Armv8
Cortex-A53 Core:
• 4x Cortex-A53
• up to 1.4GHz
• 64-bit Armv8


3D graphical engine:
• quad-core Mali-T860MP4
• can support OpenGL ES1.1/2.0/3.0/3.1
• can support OpenCL 1.2

2D graphical engine:
• source form:
ARGB, RGB888, RGB565, RGB4444, RGB5551, YUV420, YUV422(SupportYUV422SP10bit/YUV420SP10bit)
• target form:
ARGB, RGB888, RGB565, RGB4444, RGB5551, YUV420, YUV422(SupportYVYU422/420 output)

• maximum resolution: source 8192x8192, and target 4096x4096


• H.265/HEVC, up to 4Kx2K @ 60fps
• VP9, up to 4Kx2K @ 60fps
• H.264/AVC, up to 4Kx2K @ 30fps
• MPEG-1,ISO/IEC 11172-2, up to1080P @ 60fps
• MPEG-2,ISO/IEC 13818-2, up to 1080P @ 60fps
• MPEG-4,ISO/IEC 14496-2, up to 1080P @ 60fps
• VC-1, up to 1080P @ 60fps
• MVC based on H.264 or H.265, up to 1080P @ 60fps

• 1080p30 AVC/H.264
• 1080p30 VP8


• 2GB(optional 4GB)
• LPDDR3  1600


• 16GB(optional 32GB)

• eMMC 5.1 storage
• HS400 mode

Working Temperature



46mm x 70mm

Voltage Input



Android 7.1, Linux4.4.189, ForlinxDesktop 18.04

▊ Functional Features

Functional Interface



dual-screen engine up to 4096x 2160 and 2560x 1600, can output from below ports:


• CPU has 3 built-in MIPI PHY, MIPI0 can be only used as DSI, MIPI1 can be used as DSI or CSI, MIPI2 can be only used as CSI

• each DSI port has 4 data lanes, can support data transferring rate up to 6.0Gbps

• each DSI port can support output up to 1080P@ 60FPS

• MIPI0 and MIPI1 combination can support output 2560x 1600@ 60FPS

• eDP V1.3

• RGB 6/ 8/ 10-bit

• 4 data lanes, each 2.7/ 1.62Gbps

• can support PSR

DP x1
• Display Port V1.2

• compatible with HDCP2.2(backward compatible with HDCP1.3)

• only has one built-in DP controller, can output from Type-C*

• support outputting up to 4Kx 2K@ 60Hz

• HDMI1.4, HDMI2.0

• up to 18Gbps port trunks

• up to 180P@ 120Hz, 4Kx 2K@ 60Hz, QXGA@ 120Hz

• HDCP1.4/ 2.2


I2S/PCM x3
• I2S0/I2S2 can support 8-channel TX/RX. I2S1 can support -channel TX/RX
• IIS2 internally connected to HDMI and DisplayPort, IIS0 and IIS1 are for peripherals
• audio resolution from 16-bit to 32-bit
• sampling rate up to 192KHz

• can support two 16-bit audio data stored in one 32-bit width location
• can support two-phase formed stereo audio output
• can support 16-bit to 31-bit audio data left or right justified in 32-bit width sampling data frame zone
• can support 16-bit, 20-bit, 24-bit audio data transferring in PCM mode
• can support none-PCM mode


• can support one 13.0MP camera or two 8.0MP cameras
• two internal ISP
• one ISP with resolution up to 14.0 MP

• USB UVC camera input


• USB Type-C x2(multiplexed with USB 3.0)
• USB Type-C 1.1
• can support USB3.0 Type-C and DP 1.2* can switch to USB Type-C mode
• USB3.0 up to 5Gbps
• DP1.2 up to 5.4Gbps(HBR2), can support 1/2/4 mode*
• DisplayPort with AUX channel*


• USB OTG 3.0 x2( contains USB OTG 2.0 x2)
• compatible protocol: USB 3.0, USB 2.0, USB Host 1.1
• USB 3.0 in full-duplex mode up to 5Gbps band width

USB 2.0

• USB 2.0 Host x2(separated, not multiplexed with 3.0)
• compatible with USB 2.0
• can support high speed mode(480Mbps), full speed mode (12Mbps) and low speed mode(1.5Mbps)


• SD/MMC x2
• can be configured to SD/MMC or SDIO
• compatible with SDIO 3.0
• 4-bit data bus


• Gigabit Ethernet x1
• RGMII is available for 10/100/1000-Mbps
• RMII is available for 10/100-Mbps


• SPI x5
• can support serial host and slave mode, software configurable
• operation based on DMA or interrupt
• TX and RX are 32x16-bit FIFO


• UART x5
• operation based on DMA or interrupt
• TX and RX are 64Bytes FIFO
• each serial up to 4.0 Mbps


• I2C x7
• multi-host machine I2C
• standard mode up to 100 kbit/s
• fast mode up to 400 kbit/s


• PCIe x1
• compatible with PCI Express revised 2.1
• 4 full-plex channel
• each channel can support 2.5GT/s to each direction
• dual-operation mode: Root Complex(RC) and End Point(EP)


• PWMs x3
• operation based on interrupt
• 32-bit timer/ counter
• can support capture mode
• can support continuous mode or one-time mode


• ADC x5
• successive approaching ADC
• 10-bit
• switch rate up to 1MS/ s for sampling

▊ Download

Catalog: Forlinx Catalog Manual

Product Brief: FET3399-C SoM and OK3399-C SBC introduction

▊ Accessories

Please click here to get more information about the supported modules and accessories.

Optional Module
OV13850 Camera Module
7.0-inch MIPI Screen
4G Module

▊ Technical Support

1. Files to be provided after buying

Hardware related: datasheet, user guide, carrier board schematic, carrier board PCB, SoM pinmux;

Firmware related: OS image, testing demo, source code, manual;

Compiling environment

2. Fast response after-sale technical support service

Contact Us

Welcome to get in touch with us, our experts will reply to your email within 24 hours.


▊ How To Buy

1. Order Online

We have an online store on Alibaba, please contact us for details.

2. Order Offline

Please send your inquiry to [email protected];

3. Payment Terms

100% T/T in advance.

▊ Shipment

1. Delivery: Goods will be shipped by express upon the receipt of the payment;

2. Lead time: Goods will be shipped out within five working days for sample orders and 6 weeks for bulk orders;

3. Shipping charge: Buyers should bear the shipping cost.

▊ Other Forlinx Rockchip Series Products

RK3399 Single Board Computer
OK3399-C Single Board Computer
CPU: RK3399
Architecture: Cortex-A53,Cortex-A72
Frequency: 1.4GHz,1.8GHz
ROM: 16GB / 32GB eMMC
System: Linux4.4.189+ QT5.12,Android7.1
Learn More
RK3588 System on Module
FET3588-C System on Module
CPU: RK3588
Architecture: 4*A76+4*A55
Frequency: [email protected][email protected]
System: Android12.0,Ubuntu*,Linux*
Learn More
FET3568-C System on Module
FET3568-C System on Module
CPU: RK3568
Architecture: Cortex-A55
Frequency: 2.0GHz
RAM: 2GB/4GB/8GB DDR4(Standard 2GB)
System: Linux4.19+QT5.12, Android 11
Learn More
rockchip RK3399K System On Module
FET3399K-C System on Module
CPU: RK3399K
Architecture: Cortex-A53,Cortex-A72
Frequency: 1.4GHz,1.8GHz
ROM: 16GB / 32GB eMMC
System: Linux4.4.189+ QT5.12,Android7.1
Learn More