W78E58BP-40 Nuvoton Technology Corporation of America, W78E58BP-40 Datasheet - Page 21

• Manufacturer Part Number: W78E58BP-40
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W78E58BP-40

• Lead Free Status / Rohs Status: Supplier Unconfirmed

6.3
This bit is used to enable/disable the encryption logic for code protection. Once encryption feature is
enabled, the data presented on port 0 will be encoded via encryption logic. Only whole chip erase will
reset this bit.
6.4
W78E058B/E516 allow user to diminish the gain of on-chip oscillator amplifier by using programmer to
set the bit B7 of security register. Once B7 is set to 0, a half of gain will be decreased. Care must be
taken if user attempts to diminish the gain of oscillator amplifier, reducing a half of gain may
improperly affect the external crystal operation at high frequency above 24 MHz. The value of R and
C1, C2 may need some adjustment while running at lower gain.
Encryption
Oscillator Control
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W78E58B/W78E058B
Publication Release Date: April 22, 2008
Revision A9