HD6417750RF240V Datasheet, PDF (503/606 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Reset-start
No
Program/erase?
Yes
Transfer user program/erase control
program to RAM
Branch to user program/erase control
program in RAM
Section 18 ROM
Branch to flash memory application
program
FWE = high^*
Execute user program/erase control
program (flash memory rewrite)
Clear FWE
Branch to flash memory application
program
Note: * Do not constantly apply a high level to the FWE pin. Only apply a high level to the FWE pin
when programming or erasing the flash memory. To prevent excessive programming or excessive
erasing, while a high level is being applied to the FWE pin, activate the watchdog timer in case of
handling CPU runaways.
Figure 18.6 Programming/Erasing Flowchart Example in User Program Mode
Rev. 7.00 Sep. 11, 2009 Page 467 of 566
REJ09B0211-0700