This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CC2640R2F: performance difference between Cache RAM and non-Cache RAM?

Part Number: CC2640R2F


Hi, 

From the following description, it mentions there is some influence for power consumption and speed reduction if CACHE_AS_RAM  enabled. Customer is asking if we have a number for this, for example: how much percentage increased for power consumption and speed reduction?

Using the Cache as RAM

If your application needs more memory, or if you need more space in SRAM, the cache can be re-purposed as RAM. This will allow the linker to store parts of the compiled application in this section of the RAM. This section will be referred to as the general purpose RAM (GPRAM). This will cause the program to run at a slightly reduced speed, and it will increase the device power consumption in sleep. This is because the GPRAM, contrary to a cache, will have to be powered even when the device is sleeping. The current consumption in standby mode with and without cache retained is listed in the CC2640R2F datasheet.

Regards,

Yonghua