Unlock Renesas R5F212BASDFP MCU Flash Memory and copy to new microcontroller R5F212BAS which can belp to restore the original firmware from master CPU.
shows a Memory Map of R8C/20 Group. The R8C/20 Group has 1 Mbyte of address space from address 00000h to FFFFFh.
The internal ROM is allocated lower addresses, beginning with address 0FFFFh. For example, a 48-Kbyte internal ROM is allocated addresses 04000h to 0FFFFh.
The fixed interrupt vector table is allocated addresses 0FFDCh to 0FFFFh. They store the starting address of each interrupt routine in order to R5F21226 Renesas Microcontroller program unlocking.
The internal RAM is allocated higher addresses, beginning with address 00400h. For example, a 2.5-Kbyte internal RAM is allocated addresses 00400h to 00DFFh. The internal RAM is used not only for storing data but also for calling subroutines and as stacks when interrupt requests are acknowledged.
Special function registers (SFR) are allocated addresses 00000h to 002FFh. The peripheral function control registers are allocated here. All addresses within the SFR, which have nothing allocated are reserved for future user and cannot be accessed by users.