M16C65 Datasheet, PDF (92/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
5. Protection
5.3 Notes on Protection
After setting the PRC2 bit to 1 (write enabled), by writing to a given SFR, the PRC2 bit becomes 0.
Change the registers protected by the PRC2 bit in the next instruction after setting the PRC2 bit to 1.
Make sure there are no interrupts or DMA transfers between the instruction that sets the PRC2 bit to 1
and the next instruction.
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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