Additional Memory?

Question

Hello, 
 I would like to know if there are any restrictions in the amount of external memory (RAM, Flash) that can be added to a system using a nRF51822. In that case which are the limits that I can't exceed? 
 Thanks for your help.
Kind Regards

Janek Mann · Accepted Answer

There is no explicit support in the NRF51 for adding external memory, and it would be difficult to map external RAM/Flash into the memory space, for example. It would be challenging to use the additional memory as code space.
However you could use the SPI and I2C peripherals to connect to external memory ICs while managing the extra address space yourself. There is practically no limit to the memory you could add assuming you have infinite board space available.