TXZ Family
Flash Memory
2018-06-05
106 / 120
Rev. 2.0
6.6.11.3. Step-3
When the password verification is completed, the boot program transfers a programming routine (a) from the host
into the on-chip RAM. The Boot ROM loads this routine to the on-chip RAM. The programming routine must be
stored in the range from “0x20000400” to the end address which can be transmitted of the on-chip RAM.
Figure 6.21 Procedure of Using Reprogramming Algorithm in Boot ROM (3)
6.6.11.4. Step-4
The boot program jumps to the programming routine (a) in the on-chip RAM to erase the flash block containing old
application program codes (the units of erase is arbitrary size).
Figure 6.22 Procedure of Using Reprogramming Algorithm in Boot ROM (4)