Sinlinx SIN-A33 Plus Allwinner A33 Development Board Features LCD, MIPI-DSI, and VGA Interfaces

Allwinner A33 has never been a popular processor for development boards and single board computers, despite its $5 price tag for a quad core processor (in 2014), as without HDMI support, it’s been mostly used in low cost Android tablets. But this morning, I’ve come across Sinlinx company on linux-sunxi mailing list, and one of their latest development board – Sinlinx SIN-A33 Plus – is based on their older Allwinner A33 and features LCD, VGA & camera interfaces, I/Os headers, Ethernet and WiFi/Bt connectivity, and various other ports.


Sinlinx SIN-A33 Plus specifications:

  • SoC – Allwinner A33 quad core Cortex-A7 @ 1.3 GHz with Mali-400MP2 GPU
  • System Memory – 1GB DDR3
  • Storage – 4GB eMMC, SD card slot
  • Video Output – LCD connector, MIPI DSI header, and VGA port
  • Audio – 3.5mm audio jacks for microphone and headphone, speaker header
  • Connectivity – 10/100M Ethernet, WiFi and Bluetooth
  • USB – 3x USB 2.0 host ports, 1x micro USB OTG port
  • Other Expansion Headers – User I/O, Camera
  • Debugging – 3-pin UART header for serial console
  • Misc- Power, reset, volume and home buttons
  • Power Supply – 5V via power barrel; 2-pin battery header; AXP233 PMIC on CPU module
  • Dimensions – Mainboard: 145 x 108 mm; CPU module: 63 x 48 mm

There’s actually very little information about SIN-A33 Plus, but there are more details about its smaller predecessor that lacks VGA, Ethernet and wireless connectivity, and a few other features. The company provided me a link to the SDK (password: xfux) with Android 4.4 and Linux 3.4 + Qt 4.8.7, as well as documentation (mostly in Chinese).

Sinlinx Allwinner A33 CPU Board

SIN-A33 board also have its own page on linux-sunxi community, and while there isn’t any support for Allwinner A33 on the legacy kernel (3.4), there’s some support in mainline U-boot and Linux with sun8i-a33-sina33.dtb device tree binary. This is all for the older board, so modifications would be needed for the new features of SIN-A33 Plus board.

The new board is available on Taobao for 349.00 CNY (~$54). More details may soon be found on Sinlinx website, and if you can read and write Chinese, you may ask question on their forums.

Share this:

Support CNX Software! Donate via cryptocurrencies, become a Patron on Patreon, or purchase goods on Amazon or Aliexpress

ROCK 5 ITX RK3588 mini-ITX motherboard
Notify of
The comment form collects your name, email and content to allow us keep track of the comments placed on the website. Please read and accept our website Terms and Privacy Policy to post a comment.
8 years ago

are they still producing those socs or is this an attempt at getting rid of old stocks ?

Another way of asking that question would be, are there end of life announcements for those arm chips (any brand) ?

7 years ago

Hi my name is Alp,
I want to ask can you share the sdk link again? This link expired. Thanks

7 years ago

Most recent ‘SDK’ for this SoC can be found here: (R16 is just an A33 — and please be aware that this is very outdated stuff, eg. kernel 3.4.39).

Mainline kernel support for A33 looks promising, IIRC we (Armbian) added yesterday an image for Olimex’s new A33-OLinuXino using kernel 4.8.

Khadas VIM4 SBC