HD64F3337YCP16V Datasheet, PDF (542/749 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

board update routine area, and the on-board update routine execution state is entered (flash
memory programming is performed).
Therefore, a routine conforming to the programming algorithm described later must be provided in
the on-board update routine transferred from the host.
Figure 21.6 shows the system configuration in boot mode, and figure 21.7 shows the boot mode
execution procedure.
H8/3337SF
Host
Flash memory
Reception of programming data
Transmission of verification data
RxD1
SCI1
TxD1
On-chip RAM
Figure 21.6 Boot-Mode System Configuration
Boot-Mode Execution Procedure: Figure 21.7 shows the boot-mode execution procedure.
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