nRF51 RAM section size

[Chinook]

Do all revisions of nRF51 have the same 4kB RAM sections with separate RAM AHB slaves? The product specification clearly states that only for revision 3 chips.

[Stefan Birnir Sverrisson]

Hi

The RAM documentation in nRF51822_PS v3.1, section 3.2.2. is specific for third revision and does not apply for second or first revision nRF51

Update 9.7.2015 For nRF51 revision 1 and 2, only one AHB slave is present

[Stefan Birnir Sverrisson]

Thanks for pointing that out. Made me realize that things don't add up completely. I think I have been wrong about that there was only one RAM section for nRF51 first and second revision. There may be more RAM sections, but they have no real meaning because there is only one AHB slave. It is only for Third revision that there is one AHB slave per 4kB section. This means that the block diagram in nRF51 Reference Manual v2.1, section 2.1, is incorrect, but rather the diagram in nRF51822 PS v2.0, section 2.1 is correct where only one AHB slave is shown for RAM