Renesas M16C/62P Series Hardware Manual page 380

M16C/62P Group (M16C/62P, M16C/62PT)
24.6 Protect
Set the PRC2 bit to "1" (write enabled) and then write to any address, and the PRC2 bit will be cleared to "0" (write
protected). The registers protected by the PRC2 bit should be changed in the next instruction after setting the PRC2
bit to "1". Make sure no interrupts or DMA transfers will occur between the instruction in which the PRC2 bit is set
to "1" and the next instruction.
Rev.2.41 Jan 10, 2006
REJ09B0185-0241
http://www.xinpian.net
Page 365 of 390
提供单片机解密、IC解密、芯片解密业务
24. Precautions
010-62245566 13810019655