Embedded Module TQMa28L Smallest Arm® 9 LGA module based on i.MX28 with good graphics and computing power.

Arm9™ with i.MX28

  • Smallest Arm9™ module
  • Low power consumption (typ. 1 W)
  • IEC 61850 Stack
  • Extended temperature range
  • 2x IEEE1588 Ethernet (L2 Switch)
  • Battery charging functions
The TQMa28L Minimodule is the TQMa28 variant without connector and is directly soldered with the baseboard. The BGA module has been developed especially for the use in high volume projects. Due to the high level of integration it is extremely space- and cost-saving. This enables an easy and cost-effective baseboard development. The BGA module is based on the i.MX28 with an ARM926 core with up to 454 MHz.
The module is best suited for smart metering and for easy visualization and control applications. The module is Software compatible to the TQMa28. All the processor’s functional pins are on the BGA pins. Note about the ordering information: Further variants are available on request.

CPU/Processor data

  • Single Arm 9 - Up to 450MHz
CPU variant:
  • i.MX287
  • i.MX283


  • Up to 16 GB
  • Up to 256 MB


Graphic interface:
  • Up to 8x 12-bit ADC channels
  • 24-bit TFT Interface

Communication interfaces

  • Up to 2x Ethernet 10/100 Mbit
  • Up to 2x CAN 2.0 B
Serial Ports:
  • Up to 5x UART
  • 1x USB 2.0 high-speed HOST interface
  • 1x USB 2.0 high-speed OTG interface

Other interfaces

  • Up to 2x I2C
  • Up to 2x I2S
  • Up to 2x SPI
  • 1x GPIO
SD Card:
  • 1x SDIO/MMC
  • JTAG

Other functions

  • Real Time Clock (RTC)

General data/basic data

Power supply:
  • 5 V
  • Up to 8x PWM
Temperature range:
  • Standard temperature range: -25°C…+85°C
  • Extended temperature: -40°C…+85°C
Plug-in System:
  • LGA (Land Grid Array) 191 pins
  • 31 mm x 31 mm


OS Support:
  • Linux, Win CE 6.0, QNX
  • VxWorks on request

User Manual TQMa28L (1 MB, pdf)

TQMaXX - Linux BSP Rev.0119 (408 MB, zip)

Source code and precompiled image files.
Details about the supported platforms/versions: TQMa28[L] | TQMa335x[L]
MD5: 048463A121EBB56A6B6FEA889A12C0B2


i.MX283@ 450 MHz, 128 MB DDR2, 8 GB eMMC flash, -25°C…+85°C


i.MX287@ 450 MHz, 128 MB DDR2, 8 GB eMMC flash, -25°C…+85°C


STKa28 (Eval Kit) with TQMa28-AA, i.MX287/450 MHz, 128 MB DDR2, 8 GB eMMC flash, 1x RS232, 1x RS485, GPIO, 4x IN/ 8x OUT, 2x USB 2.0 HOST, 1x ETH 10/100, Stereo Out, Mono Mic In, RTC, Reset button, SD interface, Power Supply, 2 GB SD card, Z-Modem Cable

Please note, that for evaluation purposes we provide you with the starter kit STKa28 with the module TQMa28 (not TQMa28L!). The module mainly differs in the plug system.


7“ Touch-Display, WVGA 800 x 480, 300 cd, Touchpen, Cable set

Starterkit STKa28

The core of the STKa28 is the TQMa28 with an ARM® 9 CPU. The components contained in the starter kit constitute a modular system enabling you to develop your own product ideas. Development of graphic interfaces can be started immediately using the prepared combination of closed display unit and starter kit that are matched to each other. To develop your own hardware you can use the certified and qualified circuit components of the starter kit in your own designs.

Please note, that for evaluation purposes we provide you with the starter kit STKa28 with the module TQMa28 (not TQMa28L!). The module mainly differs in the plug system.

Other configurations on request


Comprehensive information from the software area such as BSP documentation, tutorials, FAQs, sample codes and are available in our Support Wiki.


Our USPs

  • Unbeatable long-term availability
  • Robustness for all applications
  • The most comprehensive range of modules on the market
  • A comprehensive design and support of an E²MS manufacturer
  • Full design freedom, as all processor functions are fully accessible
  • x86 for tough industrial use

Embedded downloads

Current downloads such as product data sheets, manuals, application notes as well as software and drivers can be found in the Download Center.


TQ-Embedded news

All the latest news about TQ-Embedded and our products as well as press releases can be found in our news overview.