Embedded System Module

An ESM module typically includes a CPU processor, memory, module-specific I/O interfaces and a number of basic front I/O connectors.

If the ESM module is plugged on a carrier, it relies on the standard PCI bus as a board-to-board interface.

Using FPGAs also reduces dependence on special controller chips which may become obsolete, thus extending the card's serviceability.

A company standard by MEN Micro, a manufacturer of embedded computers, specifies the ESM concept and the different types of modules.

Depending on the processor type, most ESM modules have heat sinks and can be operated in wide temperature ranges up to -40 to +85 °C.