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R01UH0336EJ0102 Rev.1.02
Page 329 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 9 Safety Functions
9.5.3
Procedure for Setting the BSEQ0STCHBT Register
The BSEQ0STCHBT register is write-protected, and is thus only writable by
following the designated sequence below.
Step 1:
Write the designated value (000000A5
H
) to the protection-
command register (BSEQ0TCRPCMD).
Step 2:
Write the desired setting to the target write-protected register
(BSEQ0STCHBT). (Writing is invalid in this step.)
Step 3:
Write the inverse of the desired setting to the target write-
protected register (BSEQ0STCHBT). (Writing is invalid in this
step.)
Step 4:
Again write the desired setting to the target write-protected
register (BSEQ0STCHBT). (Writing is effective in this step.)