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M16C/64C Group
Note:
1. An interrupt request is not accepted until td(SR-SUS) elapses after the interrupt request is
generated. Enable interrupts used to enter suspend mode beforehand.
Figure 30.13 Lock Bit Program Flowchart in EW1 Mode (Suspend Function Enabled)
R01UH0092EJ0110 Rev.1.10
Jul 31, 2012
Start
I flag ← 0
Write 0 and then 1
to the FMR30 bit
Write the command code
XX77h to BA address
Write XXD0h to BA address
I flag ← 1
NOP instruction × 6
FMR31 ← 0
FMR31 = 0 ?
Yes
Full status check
Program completed
Maskable interrupt
Interrupt
Access flash memory
disabled
Suspend
enabled
Interrupt
enabled
Command
restart
No
30. Flash Memory
(1)
REIT
Page 684 of 807
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