M30218 Datasheet, PDF (166/179 Pages) Mitsubishi Electric Semiconductor – M30218 Group

Appendix Standard Serial I/O Mode
Mitsubishi microcomputers
M30218 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Page Read Command
This command reads the specified page (256 bytes) in the flash memory sequentially one byte at a
time. Execute the page read command as explained here following.
(1) Send the “FF16” command code in the 1st byte of the transmission.
(2) Send addresses A8 to A15 and A16 to A23 in the 2nd and 3rd bytes of the transmission respec-
tively.
(3) From the 4th byte onward, data (D0–D7) for the page (256 bytes) specified with addresses A8 to
A23 will be output sequentially from the smallest address first in sync with the rise of the clock.
CLK0
RxD0
TxD0
RTS0(BUSY)
FF16
A8 to
A15
A16 to
A23
data0
data255
Figure DD-2. Timing for page read
Read Status Register Command
This command reads status information. When the “7016” command code is sent in the 1st byte of the
transmission, the contents of the status register (SRD) specified in the 2nd byte of the transmission
and the contents of status register 1 (SRD1) specified in the 3rd byte of the transmission are read.
CLK0
RxD0
TxD0
RTS0(BUSY)
7016
SRD SRD1
output output
Figure DD-3. Timing for reading the status register
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