1.6 Programming the FBOOT Configuration Register

Before the code memory, Configuration registers and user OTP are programmed, the FBOOT Configuration register (located at address, 0x7F40D0) must be programmed in order to configure the device in one of the Dual Partition Flash modes. The BTMODE[1:0] bits cannot be written as ‘00’ (Reserved) or as ‘11’ (Single Partition Flash). Single Partition Flash mode must be set by erasing the FBOOT register.