M16C62N Datasheet, PDF (170/213 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

CPU Rewrite Mode (Flash Memory Version)
Mitsubishi microcomputers
M16C / 62N Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Read Lock Bit Status Command (7116)
By writing the command code “7116” in the first bus cycle and then the block address of a flash
memory block in the second bus cycle that follows, the system reads out the status of the lock bit of
the specified block on to the data bus(D6).
Figure 1.29.6 shows an example of a read lock bit program flowchart.
Start
Write 7116
Enter block address
(Note)
NO
D6 = 0?
YES
Blocks locked
Blocks not locked
Note: Data bus bit 6.
Figure 1.29.6. Read lock bit status flowchart
169