SLUUCH2 March 2021 BQ40Z50-R2
Host can read from data flash adresses 0x4000-0x5FFF in SEALED mode if DF Read Only mode is active. A two-word DF Ready Only MAC sequence is required to enable DF Read Only mode. The two-word key is programmable using ManufacturerAccess() 0x0035 Security Keys . Both keys must be sent within 4 seconds of each other. Once the correct two-word MAC sequence is received and Settings:Auth Config[DF_READ_EN] =1 host can read data flash in SEALED mode for DF Read Only Timeout time. The timeout is exteded by further DF Read Only Timeout on successful data flash read.