Renesas PG-FP6 V1.06

PG-FP6 V1.06 13. Points for Caution
R20UT4469EJ0800 Rev.8.00 Page 158 of 188
Oct.01.21
13.8 Verification after Protecting the MCU
• Applies to: RH850, RX64M, RX71M, RX66T, RX72T
Setting the following protection functions of the MCU restricts the verification function.
 ID code protection
Proceeding with verification (“Verify by reading the device”) without issuing a reset after the ID code
protection bit has been set (written) will cause a protection error. To avoid this type of error, be sure to
reset the MCU after setting (writing to) the ID code protection bit. The FP6 enters the ID authentication
mode and verification is enabled.
 Read command protect (Reading prohibited)
After the read command protection bit has been set, the ID code written to the MCU cannot be
verified. However, the setting of the read command protection bit becomes effective immediately after
a new setting has been written.