Cache performance

A project log for Atmel SAM G55 development board

Small, simple SAM G55 development board with extra functions

x-labz 10/20/2017 at 13:250 Comments

Here are some statistics of the cache performance. The MCU is an Atmel SAMG55 Cortex M4 with FPU.

The test algorithm is the state of the art CODEC2 voice coder (

The test application uses the 700C coding setting. The chart below shows the average encoding +  decoding time in ms @ 120MHz with different cache size settings.

The dataset:

noCache 1K 2K 4K 8K 16K
42 ms29,5 ms 28,5 ms 29,5 ms 28,5 ms 28,5 ms