M32C8A Datasheet, PDF (354/372 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M32C/80 Series

M32C/8A Group
24. Usage Notes
24.4 Protection
The PRC2 bit in the PRCR register becomes 0 (write disable) by a write to the SFR area after the PRC2 bit is set to
1 (write enable). Set a register protected by the PRC2 bit immediately after the PRC2 bit is set to 1. Do not
generate an interrupt or a DMA or DMACII transfer between these two instructions.
Rev.1.00 Jul 15, 2007 Page 337 of 352
REJ09B0385-0100