Q:

Is it possible to execute code from an external RAM using the External Bus Interface in the EFM32G devices?

A:

In the EFM32G devices it is not possible to execute code directly from an external RAM since the EBI interface only allows up to 16-bit data access and code execution requires 32-bit access. However, it is possible to fetch code in the external RAM before running it in the internal RAM.

For the Giant Gecko and Leopard Gecko devices, the EBI interface has been improved to allow code execution from an external memory.