Renesas PG-FP6 V1.06

PG-FP6 V1.06 4. Usage of the FP6 Terminal
R20UT4469EJ0800 Rev.8.00 Page 45 of 188
Oct.01.21
 “Prohibit inside the range”: Programming or erasing of blocks within the range from the start block to
the end block is prohibited.
• “Disable rewriting”
 “No”: Making changes within the access window is not disabled.
 “Yes”: Making changes within the access window is disabled.
(D) Option Bytes (OPBT)
You can change the settings of option bytes (OPBT).
• Enable Extended Option Bytes
Select “Enable” or “Disable”, respectively, to enable or disable setting of extended option bytes (OPBT8
and above) and acquisition of their values.
Caution: Be careful when you rewrite the values of the extended option bytes since they may include
important settings for the MCU.
• OPBT0 to OPBT7
Enter the value of option bytes in 4-byte units in hexadecimal notation (bit 31 to bit 0).
• OPBT8 and above
Enter the value of extended option bytes in 4-byte units in hexadecimal notation (bit 31 to bit 0).
(E) ICU-S
Enable or disable the ICU-S.
• “Set Option”
 “Do Nothing”: ICU-S is not set.
 “Set”: The ICU-S function is enabled.
Caution: For some target devices, the ICU-S cannot be disabled after it has been enabled. For details, refer
to the user's manual of the target device.
(F) Security
Set security functions.
• “Set Option”
 “Do Nothing”: The security function is not set.
 “Set”: The security function is enabled.
• “Enable ID Code Authentication”
 “No”: The ID authentication function is disabled.
 “Yes”: The ID authentication function is enabled.
• “Disable Chip Erase / Disable Block Erase / Disable Program / Disable Read / Disable Rewriting boot
cluster / Disable Initialize Command”
 “No”: The security function is not set for the target command.
 “Yes”: The use of the target command is prohibited.
Cautions:
1. Once any of the functions for disabling commands has been set for an MCU, the setting cannot be
reversed.
2. Even if the security setting is “No”, the security setting for the MCU is not reversed.