- BL602/604 Datasheet (34 pages): Includes pinout, memory map, and general peripheral descriptions but no detailed functional specification or register listings. Sipeed, a board vendor that plans to use the BL602, claims that full register documentation will be available sometime in November 2020.
- soc602_reg.svd: Contains a seemingly-complete register listing, with names but no descriptions, for the BL602.
- Hardware Notes: Additional information gathered from the SDK repository and elsewhere on the internet.