M30622SAFP MITSUBISHI [Mitsubishi Electric Semiconductor], M30622SAFP Datasheet - Page 263

• Manufacturer Part Number: M30622SAFP
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Appendix Standard Serial I/O Mode 2 (Flash Memory Version)
Figure 1.29.28. Timing for erasing all unlocked blocks
Figure 1.29.29. Timing for the lock bit program
Erase All Unlocked Blocks Command
Lock Bit Program Command
This command erases the content of all blocks. Execute the erase all unlocked blocks command as
explained here following.
When block erasing ends, the RTS
erase operation can be known by reading the status register. Each block can be erase-protected with the
lock bit. For more information, see the section on the data protection function.
This command writes “0” (lock) for the lock bit of the specified block. Execute the lock bit program
command as explained here following.
When writing ends, the RTS
be read with the read lock bit status command. For information on the lock bit function, reset proce-
dure and so on, see the section on the data protection function.
(1) Transfer the “A7
(2) Transfer the verify command code “D0
(1) Transfer the “77
(2) Transfer addresses A
(3) Transfer the verify command code “D0
erase operation will start and continue for all blocks in the flash memory.
written for the lock bit of the specified block. Write the highest address of the specified block for
addresses A
(M16C reception data)
(M16C reception data)
(M16C transmit data)
(M16C transmit data)
8
to A
16
16
23
” command code with the 1st byte.
” command code with the 1st byte.
.
8
1
RxD1
TxD1
RxD1
to A
TxD1
(BUSY) signal changes from the “H” to the “L” level. Lock bit status can
15
1
(BUSY) signal changes from the “H” to the “L” level. The result of the
and A
16
77
16
16
A7
to A
16
” with the 4th byte. With the verify command code, “0” is
” with the 2nd byte. With the verify command code, the
16
23
A
with the 2nd and 3rd bytes respectively.
A
8
D0
15
to
16
A
A
16
23
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
to
D0
16
M16C / 62A Group
Mitsubishi microcomputers
263