FLASH MEMORY VERSION
[Precautions for flash memory serial I/O mode]
[Precautions for flash memory serial I/O mode]
1. If the boot ROM area has been reprogrammed in the flash memory parallel I/O mode, the flash memory serial I/O
mode cannot be used.
2. In the flash memory serial I/O mode, we recommend to connect pins P4OUTCUT and P6OUTCUT with VCC via resis-
tors, respectively. (Refer to section “19.3.2 Examples of handling control pins in flash memory serial I/O
mode.”)
3. When there is a possibility that the user reset signal becomes “L” level in the flash memory serial I/O mode, be sure
to cut the current flow between the user reset pin and pin RESET by using a jumper switch, etc. (Refer to
section “19.3.2 Examples of handling control pins in flash memory serial I/O mode.”)
4. Addresses FF9016 to FF9F16 (the user ROM area) are reserved for serial and parallel programmers. Therefore, be
sure not to use this area.
7905 Group User’s Manual Rev.1.0
19-25
RENESAS [ RENESAS TECHNOLOGY CORP ]
