M16C80 Datasheet, PDF (295/358 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/80 SERIES

M16C/80 Group
30. 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 30.7 shows an example of a read lock bit program flowchart.
Start
Write 7116
Enter block address
NO
D6 = 0?
YES
Blocks locked
Blocks not locked
Figure 30.7 Read lock bit status flowchart
Rev.1.00 Aug. 02, 2005 ^{Page 284} of 329
REJ09B0187-0100