Mitsubishi microcomputers
M16C / 62 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Appendix Standard Serial I/O Mode (Flash Memory Version)
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.
CLK1
A
8
to
A
16 to
RxD1
(M16C reception data)
FF16
A
15
A23
TxD1
(M16C transmit data)
data0
data255
RTS1(BUSY)
Figure 1.31.3. 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.
CLK1
RxD1
7016
(M16C reception data)
SRD
output
SRD1
output
TxD1
(M16C transmit data)
RTS1(BUSY)
Figure 1.31.4. Timing for reading the status register
257
MITSUBISHI [ Mitsubishi Group ]
