Index-11
22.3.3 RAM parity error detection function .............................................................................................. 909
22.3.4 RAM guard function...................................................................................................................... 910
22.3.5 SFR guard function ...................................................................................................................... 911
22.3.6 Invalid memory access detection function .................................................................................... 912
22.3.7 Frequency detection function ....................................................................................................... 914
22.3.8 A/D test function ........................................................................................................................... 916
CHAPTER 23 REGULATOR ................................................................................................................. 920
23.1 Regulator Overview.................................................................................................................. 920
CHAPTER 24 OPTION BYTE............................................................................................................... 921
24.1 Functions of Option Bytes ...................................................................................................... 921
24.1.1 User option byte (000C0H to 000C2H/010C0H to 010C2H)......................................................... 921
24.1.2 On-chip debug option byte (000C3H/ 010C3H)............................................................................ 922
24.2 Format of User Option Byte .................................................................................................... 923
24.3 Format of On-chip Debug Option Byte................................................................................... 927
24.4 Setting of Option Byte.............................................................................................................. 928
CHAPTER 25 FLASH MEMORY .......................................................................................................... 929
25.1 Writing to Flash Memory by Using Flash Memory Programmer ......................................... 930
25.1.1 Programming Environment........................................................................................................... 932
25.1.2 Communication Mode .................................................................................................................. 932
25.2 Writing to Flash Memory by Using External Device (that Incorporates UART) ................. 933
25.2.1 Programming Environment........................................................................................................... 933
25.2.2 Communication Mode .................................................................................................................. 934
25.3 Connection of Pins on Board.................................................................................................. 935
25.3.1 P40/TOOL0 pin ............................................................................................................................ 935
25.3.2 RESET pin.................................................................................................................................... 935
25.3.3 Port pins ....................................................................................................................................... 936
25.3.4 REGC pin ..................................................................................................................................... 936
25.3.5 X1 and X2 pins ............................................................................................................................. 936
25.3.6 Power supply................................................................................................................................ 936
25.4 Data Flash ................................................................................................................................. 937
25.4.1 Data flash overview ...................................................................................................................... 937
25.4.2 Register controlling data flash memory ........................................................................................ 938
25.4.3 Procedure for accessing data flash memory ................................................................................ 939
25.5 Programming Method .............................................................................................................. 940
25.5.1 Controlling flash memory.............................................................................................................. 940
25.5.2 Flash memory programming mode............................................................................................... 941
25.5.3 Selecting communication mode.................................................................................................... 942