m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 422

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

area can be reprogrammed with the microcomputer mounted on the final printed circuit board. About the
serial programmer concerned, consult its manufacturer, and for more information on using it, refer to the
user’s manual of the serial programmer.
memory serial I/O mode cannot be used. (Refer to section “19.4 Flash memory parallel I/O mode.”)
be sure not to use to this area.
19.3 Flash memory serial I/O mode
In the flash memory serial I/O mode, by using a dedicated serial programmer, the contents of the user ROM
Note that if the boot ROM area has been reprogrammed in the flash memory parallel I/O mode, the flash
Addresses FF90
19.3.1. Pin description
Table 19.3.1 lists the pin description in the flash memory serial I/O mode, and each of Figures 19.3.1 and
19.3.2 shows the pin configuration in this mode.
16
to FF9F
16
(the user ROM area) are reserved for serial or parallel programmers. Therefore,
7905 Group User’s Manual Rev.1.0
FLASH MEMORY VERSION
19.3 Flash memory serial I/O mode
19-19