p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 528

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 19 Flash Memory (0.18-µm F-ZTAT Version)
19.4.2
The user MAT can be programmed/erased in user program mode. (The user boot MAT cannot be
programmed/erased.)
Programming/erasing is executed by downloading the program built in the microcomputer
beforehand.
The programming/erasing overview flow is shown in figure 19.9.
High voltage is applied to internal flash memory during the programming/erasing processing.
Therefore, a transition to the reset state or hardware standby mode must not be made. Doing so
may damage and destroy flash memory. If a reset is executed accidentally, the reset must be
released after a reset input period of 100 µs which is longer than normal.
Rev. 1.00 Sep. 21, 2006 Page 490 of 658
REJ09B0310-0100
transferred to the on-chip
program data is prepared
Programming/erasing
procedure program is
Programming/erasing
Programming/erasing
When programming,
RAM and executed
User Program Mode
start
end
Figure 19.9 Programming/Erasing Overview Flow
1.
2.
Make sure the program data does not overlap the download
destination specified by FTDAR.
Programming/erasing can be executed only in the on-chip RAM.