R01UH0823EJ0100 Rev.1.00
Page 1735 of 1823
Jul 31, 2019
RX23W Group
50. Flash Memory (FLASH)
50.11.5
Procedure to Unlock Boot Mode ID Code Protection
Send the ID code check command to unlock boot mode ID code protection.
(1) When ID codes match, the MCU enters the program/erase host command wait state. Data in the user area and data
area are not erased. Use the serial programmer to start from the operation described in
to Erase the User Area and Data Area
(2) If ID codes do not match consecutively, the MCU remains in the boot mode ID code authentication state. Reset the
MCU, and then use the serial programmer to start again from
section 50.11.1, Bit Rate Automatic Adjustment
Figure 50.37
Procedure to Unlock ID Code Protection
60h (ID code check command)
06h (ACK)
MCU
Serial
programmer
ID codes does not match
ID codes match
(1)
(2)
E0h, XXh (error code)