Difference between nRF51822XXAC and nRF51822XXAA in ROM and RAM during configuration Keil v5

[Angelo Cotroneo]

Hi all,

I have a question regarding the difference between the nRF51822XXAC and nRF51822XXAA during the configuration of IROM and IRAM in Keil software.

I know that theere are difference in ROM and RAM between the above chip.

In configuration AC, the Keil sw suggest to use S130 while in AA the softdevice is the S120.

When I use the AC configuration, so S130 softdevice, and the releative firmware to trasmit via bluethoot the data coming from the ADC, it works properly and the KEIL sw set a default value in IROM and IRAM.

When I select the nRF51822XXAA the keil sw set the IROM and IRAm to 0x00.

I have read in datasheet of S120 the relative address and size but with the same firmware, my phone don't found the bluethoot. When I use the S130 softdevice in nRF51822XXAA and the same fw to send data via bluethoot my phone detect the bluethoot network but the connection is instable (loss connection).

Why do not, with S120 softdevice, I detect the network with S120?

What is the correct address and size (RAM and ROM) when I use nRF518222XXAA?

Thanks a lot

Angelo

[Simonr]

Hi Angelo

Yes, this seems correct. The IDE should also give you a warning if there are any conflicts with the RAM/ROM sizes.

Best regards,

Simon

[Angelo Cotroneo]

Thanks a lot Simon,

Best regards and I hope you are well.