Datasheet

78K0/Ix2 CHAPTER 24 OPTION BYTE
R01UH0010EJ0500 Rev.5.00 647
Feb 28, 2012
(3) 0082H/1082H
 Internal high-speed oscillation clock frequency selection
 4 MHz (TYP.)
 8 MHz (TYP.)
Caution Set a value that is the same as that of 0082H to 1082H because 0082H and 1082H are switched
during the boot swap operation.
(4) 0083H/1083H
 Pin selection used during on-chip debugging
 TOOLC0/X1, TOOLD0/X2
 TOOLC1/P31, TOOLD1/P32
Caution Set a value that is the same as that of 0083H to 1083H because 0083H and 1083H are switched
during the boot swap operation.
(5) 0084H/1084H
 On-chip debug operation control
 Disabling on-chip debug operation
 Enabling on-chip debug operation and erasing data of the flash memory in case authentication of the on-chip
debug security ID fails
 Enabling on-chip debug operation and not erasing data of the flash memory even in case authentication of the
on-chip debug security ID fails
Caution Set a value that is the same as that of 0084H to 1084H because 0084H and 1084H are switched
during the boot swap operation.
24.2 Format of Option Byte
The format of the option byte is shown below.