nRF51822 revision

Question

How do I identify the hardware revision of my nRF51822 chip?

Stefan Birnir Sverrisson · Accepted Answer

To identify what nRF51822 chip you have, read the "How to identify the harware revision" in nWP-021 . 
 The hardware revision of nRF51822 can be determined by looking at table 1 in the nWP-021 white paper . 
 
 The chips that have Product Specification document v1.x in table 1 are first revision nRF51822 hardware 
 The chips that have Product Specification document v2.x in table 1 are second revision nRF51822 hardware 
 The chips that have Product Specification document v3.x in table 1 are third revision nRF51822 hardware 
 
 Update 28.1.2015 
A more obvious way to see the hardware revision of any nrf51 chip is to look at the nRF51 compatibility matrix 
 Update 8.5.2015 
To see the hardware revision, RAM size and ROM size progrmmatically, call the nrf_ic_info_get function defined in 
RF51_SDK_8.1.0_b6ed55f\components\libraries\ic_info
rf_ic_info.h. This function is new for nRF51 SDK 8.1.0, it is not present in SDK 8.0.0