M16C Datasheet, PDF (223/262 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Preliminary Specifications REV.B
Mitsubishi microcomputers
Specifications in this manual are tentative and subject to change.
M16C / 6N Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
CPU Rewrite Mode
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 (D6).
Figure 23-6 shows an example of a read lock bit program flowchart.
Start
Write 7116
Enter block address
D6 = 0? ^NO
YES
Blocks locked
Blocks not locked
Figure 23-7. Read lock bit status flowchart
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