M30222 Datasheet, PDF (195/237 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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Specifications in this manual are tentative and subject to change
MITSUBISHI MICROCOMPUTERS
M30222 Group
Rev. G
CPU Rewrite Mode (Flash Memory Version)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Start
Write 711 6
Enter Block address
(Note)
D6 = 0?
YES
Blocks locked
Fig. 1.155. Lockbit Status Read Flowchart
NO
Blocks not
locked
Note: Data Bus bit 6
Lock Bit Status Read Command (7116)
This command is available only when the lock bit is enabled. For CPU rewrite mode bit 4 must be a "1". In parallel
mode WPB must be a "0". By writing the command code ("7116") in the first bus cycle and reading the Block
address and data bit 6 in the second cycle, the value of the lock bit for that block address can be read. A "0"
means that the block is locked. A "1" means that the block is unlocked.
Figure 1.155 is an example of a lockbit status read flowchart.
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