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Control Unit CUmini 5x-2x0x - Rev. 1.A
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3/ Design and function
3.1. Description of function
3.1.1. Processor
Depending on the version, the Control Unit is equipped with one of the following Intel® Atom™ processors:
Table 4: Possible processors
Designation Cache Clock frequency Number of cores
Intel® Atom™ Prozessor E3815 1MB 1.46GHz 1 (Single Core)
Intel® Atom™ Prozessor E3825 1MB 1.33GHz 2 (Dual Core)
Intel® Atom™ Prozessor E3845 2MB 1.91GHz 4 (Quad Core)
3.1.2. BIOS
The BIOS controls the following functionalities among others:

Phoenix Technologies SecureCore Technology for the E38xx platform

UEFI BIOS for 32- and 64-Bit Operating systems

UEFI/Legacy Boot Option

Booting from USB, LAN, SD and eMMC

Virtualization (Intel VT-x)

Built-in UEFI Shell

BIOS Password

Execute Disable (XD)
 USB Support

Fast Boot
3.1.3. NOR-Flash
The NOR flash memory installed on the Control Unit serves as BIOS memory. Its storage capacity is 64Mb.
3.1.4. DDR3L RAM
DDR3L-RAM is used as working memory.
The CPU module provides a SO-DIMM-204 slot. The total memory capacity is minimum 1GB up to maximum 4GB for
single-core processors and maximum 8GB for multi-core processors. The assembly is done in the factory.
3.1.5. MicroSD
The microSD card slot X14 integrated on the base module allows the use of SD cards up to SDXC format. The 4-bit
wide SDIO interface is routed directly from the processor to the microSD slot.
Supported UHS-I Modes: HS, DDR50, SDR12, SDR25
Modes: 1 bit, 4 bit