User Program Mode; Figure 17.9 Programming/Erasing Flow - Renesas H8SX/1520 Series Hardware Manual

17.8.2

User Program Mode

Programming/erasing of the user MAT is executed by downloading an on-chip program. The user
boot MAT cannot be programmed/erased in user program mode. The programming/erasing flow is
shown in figure 17.9.
Since high voltage is applied to the internal flash memory during programming/erasing, a
transition to the reset state or hardware standby mode must not be made during
programming/erasing. A transition to the reset state or hardware standby mode during
programming/erasing may damage the flash memory. If a reset is input, the reset must be released
after the reset input period (period of RES = 0) of at least 100 µs.
program data is prepared
Programming/erasing
procedure program is
transferred to the on-chip
Downloaded from Elcodis.com electronic components distributor
Programming/erasing
start
When programming,
RAM and executed
Programming/erasing
end

Figure 17.9 Programming/Erasing Flow

Section 17 Flash Memory (0.18-(m F-ZTAT Version)
1.
Exit RAM emulation mode beforehand. Download is not allowed
in emulation mode.
2.
When the program data is adjusted in emulation mode, select
the download destination specified by FTDAR carefully. Make
sure that the download area does not overlap the emulation
area.
3.
Programming/erasing is executed only in the on-chip RAM.
4.
After programming/erasing is finished, protect the flash memory
by the hardware protection.
Rev. 3.00 Mar. 14, 2006 Page 603 of 804
REJ09B0104-0300