M30621ECGP MITSUBISHI [Mitsubishi Electric Semiconductor], M30621ECGP Datasheet - Page 218

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

Appendix Standard Serial I/O Mode
218
Figure 1.25.9. Timing for reading lock bit status
Figure 1.25.10. Timing for enabling the lock bit
Read Lock Bit Status Command
Lock Bit Enable Command
This command reads the lock bit status of the specified block. Execute the read lock bit status com-
mand as explained here following.
This command enables the lock bit in blocks whose bit was disabled with the lock bit disable com-
mand. The command code “7A
enables the lock bit function; it does not set the lock bit itself.
(1) Send the “71
(2) Send addresses A
(3) The lock bit data of the specified block is output in the 4th byte of the transmission. Write the
tively.
highest address of the specified block for addresses A
(M16C reception data)
(M16C transmit data)
16
” command code in the 1st byte of the transmission.
RTS1(BUSY)
8
to A
(M16C reception data)
(M16C transmit data)
CLK1
RxD1
TxD1
15
16
and A
” is sent in the 1st byte of the serial transmission. This command only
RTS1(BUSY)
16
CLK1
RxD1
TxD1
to A
71
16
23
in the 2nd and 3rd bytes of the transmission respec-
A
A
8
15
to
7A
16
A
A
16
23
8
to
to A
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
23
DQ6
.
M16C / 62 Group (80-pin)
Mitsubishi microcomputers