HD6473847RHV Datasheet, PDF (186/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Section 6 ROM
Reset-start
No
Program/erase?
Yes
Transfer user program/erase control
program to RAM
Branch to flash memory application
program
Branch to user program/erase control
program in RAM
Execute user program/erase control
program (flash memory rewrite)
Branch to flash memory application
program
Figure 6.9 Programming/Erasing Flowchart Example in User Program Mode
6.7.3 Notes on On-Board Programming
1. You must use the system clock oscillator when programming or erasing flash memory on the
H8/38104F Group. The on-chip oscillator should not be used for programming or erasing flash
memory. See section 4.3.4, On-Chip Oscillator Selection Method, for information on switching
between the system clock oscillator and the on-chip oscillator.
2. On the H8/38104F Group the watchdog timer operates after a reset is canceled. When
executing a program prepared by the user that performs programming and erasing in the user
mode, the watchdog timer’s overflow cycle should be set to an appropriate value. Refer to
section 6.8.1, Program/Program-Verify, for information on the appropriate watchdog timer
overflow cycle for programming, and to section 6.8.2, Erase/Erase-Verify, for information on
the appropriate watchdog timer overflow cycle for erasing.
Rev. 7.00 Mar. 08, 2010 Page 154 of 510
REJ09B0024-0700