M30621ECGP MITSUBISHI [Mitsubishi Electric Semiconductor], M30621ECGP Datasheet - Page 215

• Manufacturer Part Number: M30621ECGP
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Appendix Standard Serial I/O Mode
Figure 1.25.5. Timing for the page program
Figure 1.25.4. Timing for clearing the status register
Page Program Command
Clear Status Register Command
This command writes the specified page (256 bytes) in the flash memory sequentially one byte at a
time. Execute the page program command as explained here following.
When reception setup for the next 256 bytes ends, the RTS1 (BUSY) signal changes from the “H” to
the “L” level. The result of the page program can be known by reading the status register. For more
information, see the section on the status register.
Each block can be write-protected with the lock bit. For more information, see the section on the data
protection function. Additional writing is not allowed with already programmed pages.
This command clears the bits (SR3–SR5) which are set when the status register operation ends in
error. When the “50
bits are cleared. When the clear status register operation ends, the RTS1 (BUSY) signal changes
from the “H” to the “L” level.
(1) Send the “41
(2) Send addresses A
(3) From the 4th byte onward, as write data (D
A
8
(M16C reception data)
to A
(M16C transmit data)
23
is input sequentially from the smallest address first, that page is automatically written.
RTS1(BUSY)
16
16
(M16C reception data)
” command code in the 1st byte of the transmission.
” command code is sent in the 1st byte of the transmission, the aforementioned
(M16C transmit data)
CLK1
RxD1
TxD1
8
to A
RTS1(BUSY)
15
and A
41
CLK1
RxD1
TxD1
16
16
to A
A
A
8
23
15
to
in the 2nd and 3rd bytes of the transmission respectively.
0
–D
50
A
A
16
16
7
23
) for the page (256 bytes) specified with addresses
to
data0
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
data255
M16C / 62 Group (80-pin)
Mitsubishi microcomputers
215