5 - 15
5 - 15
5. THINGS YOU NEED TO KNOW BEFORE PROGRAMMING
5.3.2 How to cancel write protect
When you want to cancel a write protect setting, set the most significant bit of the
address 0000
H
to “0”.
The write protect setting is canceled, and the start and end address settings set in
addresses 0000
H
to 0003
H
are made invalid.
Table 5.12 Write Protect Cancellation Method
Address
Bit
Upper Lower
0000
H
0 0 0 0 0 0 0 0
0 0
0001
H
0 0 0 0 0 0 0 0
0 0
0002
H
0 0 0 0 0 0 0 0
0 0
0003
H
0 0 0 0 0 0 0 0
0 0
