Theobroma Allwinner A31 System-on-Module

theobroma system on modules allwinnertx-reverse-160pxQuad Core Allwinner A31-uQ7 Module

micro-Qseven SoM features quad 1.2GHz ARM Cortex-A7

A31-uQ7 quad-core ARM Cortex-A7 SoM with Allwinner A31
The A31-uQ7 system-on-module from Theobroma Systems is a powerful yet cost-effective solution incorporating a quad-core Allwinner A31 processor running at up to 1.2GHz with up to 2GB DDR3 RAM, high-throughput on-module eMMC, versatile PowerVR SGX544MP2 graphics, and a multi-format video co-processor.

Based on the QSeven standard, the module offers a high-performance, DMA-capable, Gigabit Ethernet interface, up to 8 USB ports, HDMI and dual LVDS display, UART, I2S, I2C and SPI, as well as  SATA and SD Card support. Use the module with the development kit for instant out-of-the-box application development results, and plug in to your own baseboard for a complete industrial solution.

In addition to a comprehensive Debian Linux BSP , Android support is available. Software-programmable DVFS (digital voltage and frequency scaling) manages power consumption, and 25mW suspend-to-RAM is supported.

Theobroma A31-uQ7 devkit unboxing video

Unboxing the devkit

An on-module ARM Cortex-M0 subsystem offloads communications protocols and allows real-time processing, as well as providing additional features such as CANbus, low-power RTC and watchdog.

The module measures just 70 x 40mm, operates from a single 5V supply, and is complemented by a mini-ITX form-factor development baseboard, which ships with Linux pre-installed on microSD card.

ProcessorAllwinner A31
CPU4x ARM Cortex-A7
Processor Clock Max (GHz)1.2
RAM (GB)512MB, 1/2DDR3-LV
eMMC Flash (GB)4/8/1640 MByte/sec read
Floating PointyARM Cortex Neon VFP
UART1RS-232 on devkit
Ethernet1High Performance Gigabit Ethernet
I2C Interface1
SD card1microSD on devkit
USBup to 8
Audioyaudio in/out on devkit
Temperature Range0-65C / -20 to +85C
Dimensions70 x 40mm
Input Voltage (V)5vconsumption up to 5W
ConnectorsQSeven230-pin MXM
LinuxyDebian 8 userland
Qtytested with Qt 5.3
The Mini-ITX form factor development baseboard offers a comprehensive development environment based on A31-uQ7, running Debian Linux out-of-the-box. The development system consists of a baseboard which provides connectors for the main module interfaces, including SD Card, SATA, USB, GPIO, HDMI, LVDS, Ethernet and RS-232. Additional facilities include an audio codec with audio in/out to 3.5mm jacks, JTAG connector, a buzzer and RTC coin-cell holder. For production purposes, most projects require a custom baseboard, and we are happy to offer baseboard design and manufacture as a service.

devkit for Allwinner A31 quad core system-on-modulehainan_board_w_key_1263px


µQseven BaseboardA31-µQ7 Module
Power Supply12V 36W
Cables included for EU, UK and US wall plugs
USB-RS232 ConverterBased on the Prolific PL2303
HeatsinkIncludes mounting screws and thermal pad
µSD-CardReady-to-use Debian Jessie preinstalled
Form FactorMicro-ATX
Exported InterfacesGigabit Ethernet
Dual-channel LVDS
6x USB 2.0
Micro-SD Card
4-Pin PWM fan header
Power Supply12V DC via barrel connector (power supply included) or
ATX power

Simply follow the “Buy Online” link to the right to purchase the DevKit, which will be with you within 2-3 working days.

In low volume (MOQ 20 modules) the following “Regular” configuration is usually available from inventory:

TA31/R/1GR/4GF with 1GB RAM, 4GB eMMC, 8 USB, HDMI, SATA, CAN, Commercial (0 to +60C)

Also available in industrial spec. with MOQ 20 units:

TA31/R/1GR/4GF/I with 1GB RAM, 4GB eMMC, 3 USB, HDMI, CAN, industrial (-20 to +85C) spec.

For larger volumes or custom orders, a range of options are available, including:

“Eco”:  with 512MB RAM, 4GB eMMC, 3 USB, HDMI, Commercial temp range (0 to +60C)
“Premium Plus”: with 2GB RAM, 16GB eMMC, 8 USB, HDMI, SATA, CAN, Kerkey, Commercial temp range (0 to +60C)
“Premium Plus”: with 2GB RAM, 16GB eMMC, 3 USB, HDMI, CAN, Kerkey, Industrial temp range (-20 to +85C)

Larger RAM and eMMC versions are also available on request.

Simply order the A31-uQ7 development system via our online shop, using the “Buy Online” link to the right, and it should be with you in a couple of days. We look forward to providing you with knowledgeable, professional support to create your product. If you have questions, please don’t hesitate to contact us by calling Direct Insight on +44 1295 768800 9am to 5.30pm UK time, emailing info at, or by using the “Contact Us” form below.

Volume pricing information is just a couple of clicks away – please follow the “Get Quote” link to the right. Or contact our experienced team with your detailed questions – we’ll be happy to help.

64-bit module with Allwinner A64 now available too!