Embedded Computing


Intel® Atom® Processor E3845 ETX CPU Module

  • Onboard Intel® Atom® Processor E3845, 1.91GHz
  • 1x DDR3L SO-DIMM, Max. 8GB
  • Supports CRT, LVDS and 1x DDI
  • 1x 10/100Mbps LAN
  • Watchdog timer, LPC to ISA
  • 1x SATA II, 2x IDE, 4x USB 2.0, 2x COM
  • Wide-range operating temperature
ET839 ETX module

The ET839 ETX module supports industrial wide temperature (-20°C ~70°C) and low heat dissipation efficiency, making it ideal for use in fanless applications in harsh environments. The platform is powered by a 1.91GHz quad-core Intel® Atom® Processor E3845 SoC that features scalable performance that allows simple replacement or upgrade of current Bay Trail-I ETX solutions without changing the baseboard, regardless of the chassis and thermal designs.

The ET839 ETX module also gives customers with flexibility to design different carrier boards with different I/O interface, connectors and functionality specific to their needs and reduce time-to-market.

The new ET839 (95 x 114mm) supports up to 8GB of DDR3L SO-DIMM system memory. Integrated graphics enable dual independent displays via 24-bit dual channel LVDS and CRT graphics outputs with resolutions up to 1600 x 1200 and 2048 x 1536 respectively. Other interfaces and expansion provided include 4x USB, SATA II, 2x IDE, 2x COM, audio, LAN, LPT, PS/2 keyboard/mouse, as well as PCI and ISA bus.

CPU Intel® Atom® Processor E3845 SoC, 1.91GHz
PCH Integrated in Intel® Atom® SoC
Memory 1x DDR3L SO-DIMM, Max. 8GB
Watchdog Timer 256 levels
H/W Monitor Yes
Storage Device Interface N/A
Expansion Slots 4x ETX connectors for PCI bus, USB, audio, CRT, LVDS, LAN, COM ports, LPT, IDE, PS/2 keyboard/mouse and ISA bus
Graphics Controller Intel® Atom® SoC integrated Gen. 7 4Eus graphics
Video Output Supports CRT, 24-bit dual-channel LVDS & 1x DDI port
Ethernet Realtek 8106E 10/100Mbps LAN
I/O Chipset Nuvoton NCT6102D 1x keyboard, 1x mouse, 1x printer
Serial Port 2x RS232
USB 2.0 4x USB 2.0 via Carrier Board
Serial ATA 1x SATA 2.0 port on board (3.0Gb/sec)
Audio Intel® Atom® SoC built-in HD Audio w/ Realtek ALC888S codec
Others Fintek F85226 ( LPC to ISA)
Dimensions (L X W) 95mm x 114mm (3.74" x 4.49")
Power Consumption Intel® Atom® E3845 1.91GHz w/ 2x 4GB DDR3L-1600 +5V : 1.92A
Operating Temperature -20°C~70°C (-68°F~158°F)
Storage Temperature -20°C~80°C (-68°F~176°F)
Relative Humidity 10%~90% (non-condensing)
ET839D1S-I45 ETX (3.0) CPU Module w/ Intel® Atom® processor E3845 SoC, CRT, LVDS and 10/100 LAN, heat spreader included
*(S) means with Realtek ALC888S codec
IP412 ETX(3.0) carrier board
HSET838-BGA-1 Heat spreader for ET839
CATALOGS 2023 Embedded Computing Catalog


Model Chipset Video Audio Network Others

Intel Chipset Driver

Windows 7 & 8

Intel HD Graphics Driver

Windows 7 (32 bit)

Realtek High Definition Audio Driver

Windows 7 & 8

Realtek RTL8106E

Windows 7

Intel USB 3.0 Driver

Windows 7

Intel TXE Driver

Windows 7 & 8

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