R01UH0823EJ0100 Rev.1.00
Page 1740 of 1823
Jul 31, 2019
RX23W Group
50. Flash Memory (FLASH)
50.11.10 Procedure to Set the Access Window in the User Area
Procedure to set the access window to avoid unintentionally rewriting the user area during the self-programming is as
follows.
(1) Send the access window program command (74h) to set the access window settings.
(2) Send the access window read command (73h) to confirm the access window settings.
Figure 50.42
Procedure to Set the Access Window in the User Area
F4h, XXh (error code)
06h (ACK)
73h (access window read command)
73h, setting values of the access window
74h (access window information program command)
Serial
programmer
Settings used for
self-programming
Confirm the settings
F3h, XXh (error code)
(2)
(1)
MCU