參數(shù)資料
型號: M30201M2T
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
中文描述: 單片16位CMOS微機(jī)
文件頁數(shù): 150/159頁
文件大?。?/td> 2319K
代理商: M30201M2T
Unde
Appendix Standard Serial I/O Mode
Peimnay
deeopmen
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
150
Read Lock Bit Status Command
This command reads the lock bit status of the specified block. Execute the read lock bit status com-
mand as explained here following.
(1) Send the “71
16
” command code in the 1st byte of the transmission.
(2) Send addresses A
8
to A
15
and A
16
to A
23
in the 2nd and 3rd bytes of the transmission respec-
tively.
(3) The lock bit data of the specified block is output in the 4th byte of the transmission. Write the
highest address of the specified block for addresses A
8
to A
23
.
The M30201 (flash memory version) does not have the lock bit, so the read value is always “1”
(block unlock).
A
8
to
A
15
A
16
to
A
23
71
16
DQ6
RxD0
TxD0
P5
3
(BUSY)
Figure DD-8. Timing for reading lock bit status
Erase All Unlocked Blocks Command
This command erases the content of all blocks. Execute the erase all unlocked blocks command as
explained here following.
(1) Send the “A7
16
” command code in the 1st byte of the transmission.
(2) Send the verify command code “D0
16
” in the 2nd byte of the transmission. With the verify com-
mand code, the erase operation will start and continue for all blocks in the flash memory.
When block erasing ends, the
P5
3
(BUSY) signal changes from the “H” to the “L” level. The result of the
erase operation can be known by reading the status register.
A7
16
D0
16
CLK0
RxD0
TxD0
P5
3
(BUSY)
Figure DD-7. Timing for erasing all unlocked blocks
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