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R8C/18 Group, R8C/19 Group
EW0 Mode
EW1 Mode
NOTES:
1. In EW0 mode, the interrupt vector table and interrupt routine for interrupts to be used should be allocated
to the RAM area.
2. td(SR-ES) is needed until the interrupt request is acknowledged after it is generated. The interrupt to enter
erase-suspend should be in interrupt enabled status.
Figure 17.14
Block Erase Command (When Using Erase-Suspend Function)
Rev.1.30
Apr 14, 2006
REJ09B0222-0130
Start
FMR40 = 1
Write the command code 20h
Write D0h to any block
address
FMR00 = 1?
Yes
Full status check
Block erase completed
Start
FMR40 = 1
Write the command code 20h
Write D0h to any block address
FMR41 = 0
FMR00 = 1 ?
Yes
Full status check
Block erase completed
Page 191 of 233
Maskable interrupt
FMR41 = 1
FMR46 = 1 ?
Access flash memory
FMR41 = 0
No
Maskable interrupt
Access flash memory
No
17. Flash Memory Version
(1, 2)
No
Yes
REIT
(2)
REIT
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