Index-22
27.3.1 Flash memory CRC operation function (high-speed CRC) ......................................................... 1582
27.3.2 CRC operation function (general-purpose CRC) ........................................................................ 1586
27.3.3 RAM-ECC function ..................................................................................................................... 1590
27.3.4 CPU stack pointer monitor function ............................................................................................ 1596
27.3.5 Clock monitor ............................................................................................................................. 1599
27.3.6 RAM guard function .................................................................................................................... 1600
27.3.7 SFR guard function .................................................................................................................... 1601
27.3.8 Invalid memory access detection function .................................................................................. 1602
27.3.9 Frequency detection function ..................................................................................................... 1605
27.3.10 A/D test function ....................................................................................................................... 1608
27.3.11 Digital output signal level detection function for I/O ports ......................................................... 1613
CHAPTER 28 REGULATOR ............................................................................................................... 1614
28.1 Regulator Overview ................................................................................................................ 1614
CHAPTER 29 OPTION BYTE ............................................................................................................. 1615
29.1 Functions of Option Bytes .................................................................................................... 1615
29.1.1 User option byte (000C0H to 000C2H/020C0H to 020C2H) ....................................................... 1615
29.1.2 On-chip debug option byte (000C3H/ 020C3H) .......................................................................... 1616
29.2 Format of User Option Byte .................................................................................................. 1617
29.3 Format of On-chip Debug Option Byte ................................................................................. 1621
29.4 Setting of Option Byte............................................................................................................ 1622
CHAPTER 30 FLASH MEMORY ........................................................................................................ 1623
30.1 Serial Programming Using Flash Memory Programmer .................................................... 1625
30.1.1 Programming Environment ......................................................................................................... 1627
30.1.2 Communication Mode ................................................................................................................ 1627
30.2 Serial Programming Using External Device (that Incorporates UART) ............................ 1629
30.2.1 Programming Environment ......................................................................................................... 1629
30.2.2 Communication Mode ................................................................................................................ 1630
30.3 Connection of Pins on Board ................................................................................................ 1631
30.3.1 P40/TOOL0 pin .......................................................................................................................... 1631
30.3.2 RESET pin .................................................................................................................................. 1631
30.3.3 Port pins ..................................................................................................................................... 1632
30.3.4 REGC pin ................................................................................................................................... 1632
30.3.5 X1 and X2 pins ........................................................................................................................... 1632
30.3.6 Power supply .............................................................................................................................. 1632
30.4 Serial Programming Method ................................................................................................. 1633
30.4.1 Serial programming procedure ................................................................................................... 1633
30.4.2 Flash memory programming mode ............................................................................................. 1634
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