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6
When using a program in the flash memory while the FENTRY bit = 0, the EI vector entry is
located at address H'0000 0080 of the flash memory. When running a flash rewrite program in
RAM while the FENTRY bit = 1, the EI vector entry is located at address H'0080 4000 of the RAM,
allowing for flash rewrite operation to be controlled using interrupts.
Table 6.4.1 Changes of EI Vector Entry by FENTRY
FENTRY
0
1
(2) FEMMOD (Virtual Flash Emulation Mode) bit (D7)
The FEMMOD bit controls entry to Virtual flash emulation mode. Virtual flash emulation mode is
entered by setting the FEMMOD bit to 1 while the FENTRY bit = 0. (For details, refer to Section
6.7, "Virtual Flash Emulation Function.")
6.4 Registers Associated with the Internal Flash Memory
EI Vector Entry
Flash memory area
Internal RAM area
6-9
INTERNAL MEMORY
Address
H'0000 0080
H'0080 4000
Ver.0.10
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