HD6432646 Hitachi, HD6432646 Datasheet - Page 610

• Manufacturer Part Number: HD6432646
• Description: (HD64F264x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Mailbox (RAM) initialization
As message control/data registers (MCx[x], MDx[x]) are configured in RAM, their initial
values after powering on are undefined, and so bit initialization is necessary. Write 0s or 1s to
the mailboxes. Refer to Mailbox (message control/data (MCx[x], MDx[x])) initial settings in
section 15.3.2, Initialization after Hardware Reset, for details.
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