OK3399-C Single Board Computer(Rockchip RK3399 SoC)

CPU: RK3399

Architecture: Heterogeneous

Frequency: 1.4GHz,1.8GHz

RAM: 4GB DDR3(optional)


System: Linux4.4.189+ QT5.12,Android7.1

Rockchip RK3399 based  Single Board Computer OK3399-C

OK3399-C is RK3399 single board computer ( development board) which consists of two Cotex-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. A variety of display interfaces such as HDMI2.0, MIPI-DSI, eDP1.3 and DP1.2 are all available and resolution 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.

Target application
Self-service terminal
Edge computing
5G Smart terminal
POS machine
Facial recognition
…… ……

Hexa-core processor

FE T3 399-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 deisigning to avoid SoM failure by misplug operation.

RK3399 motherboard PC
RK3399 motherboard Phone

OK3399-C SBC Pin Diagram

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 stardard aluminum enlcosure and the later compact one for user-defined enclosure.

▊FET3399-C System on Module Hardware 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、Linux*




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)


• 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


• 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 x 1
• 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 x 3
• operation based on interrupt
•32-bit timer/ counter
• can support capture mode
• can support continuous mode or one-time mode


ADC x 5
• successive approaching ADC
• switch rate up to 1MS/ s for sampling

▊OK3399-C Single Board Computer Hardware Features

Functional Interface


Power In DC12V

HDMI1.4, HDMI2.0

up to 18Gbps port trunks

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

HDCP1.4/ 2.2

USB Type-C

• install or update system by USB type-C
USB Type-C 1.1
can support mode switching between USB Type-C and DP1.2*
• USB3.0 transferring rate up to 5Gbps
DP1.2 transferring rate up to 5.4Gbps(HBR2), can support 1/ 2/ 4 mode*
DisplayPort can support AUX channel*

TF Card

•  install or update system by TF card
• can support 1.8V* and 3.3V mode


• protocol: USB3.0, USB2.0, USB Host 1.1
• USB full-duplex mode transferring rate up to 5Gbps

USB 2.0

USB 2.0 Host x4, USB 2.0 Host Type-A x 2
• expandable by HUB which is same with 4G and P28

USB 2.0 Host XH2.54 x 2
• P29 is a native USB

• P28 is expanded by HUB

IO Expand

• SPI x 2
• can support serial host and slave modes, software configurable
• operation based on DMA or interrupt

• TX and RX are 32x16-bit FIFO
• it's configured to GPS in Android system
• multi-plexed with SPI1
I2C x1
• multi-host IIC
• standard mode up to 100 kbit/s
• fast mode up to 400 kbit/s
ADC x2
• successive approaching ADC
• 10-bit
• sampling rate up to
• 1.8V


• Mini PCIe package


• Micro USB connector

• on-board USB to serial chip(CP2102)


• 10/100/1000-Mbps auto-negotiation, RJ 45 connector


• can support 1x 13MP or 2x 8.0MP


• it's configured to audio volume adjusting keys in Android system
• VoL+ is a Recover key, press it to start OTG flashing mode

3.5mm Earphone

• can support MIC and Headphone
• CTIA standard and can support earphone line controlling


• output consumption rate up to 1W
• can support D-amplifier output


IEEE 802.11b/g/n & Wi-Fi AP 2.4GHz
IEEE 802.11a/n/ac & Wi-Fi AP 5GHz
• SDIO3.0@ WiFi

• BT5.0


• can support slave mode and slave mode


• eDP v1.3
• 4 data lanes, each 2.7/ 1.62 Gbps
• supported with a 12V power interface, backlight enabled and backlight adjusted by PWM

MIPI-DSI • 4 data lanes, each 6.0 Gbps
• each up to 1080P@ 60FPS

• PCIe x 4 full-duplex

• each channel serial data transferring rate up to 2.5GT/ S to each direction

• M.2 KEY M connector

• preserved with 2260 and 2280 mounting holes for M.2 device

• can support NVMe static hard disk

Related SoM (system on module): FET3399-C

▊ Download

Brochure: Forlinx latest catalog

Hardware Manual: OK3399-C/ FET3399-C Hardware Manual

How to buy

Payment term: 100% payment in advance no matter sample orders or bulk purchasing orders.

1. Order Online

We have an online store on Alibaba, please contact us to start ordering

2. Western Union

Tell us which item and model you want to order, and we will send you a PI with Western Union account.

3. Bank Transfer(T/ T)

Tell us model and quantity, and we'll send you a PI with our company's bank account for payment.


Payment term: 100% in advance

1. Delivery: Goods will be sent out by express as requested

2. Lead time: generally, goods could be sent out within five working days for a sample order, for a bulk requirement order, please contact us to check stock status and estimated delivery time.

3. Shipping charge: buyers should bear related shipping cost.

Recommended system on module(SoM)

SoM FET3399-C