R01UH0823EJ0100 Rev.1.00
Page 1738 of 1823
Jul 31, 2019
RX23W Group
50. Flash Memory (FLASH)
50.11.8
Procedure to Check Data in the User Area
Procedure to read and check, checksum, and blank check the user area to check the programmed data in the user area is
as follows.
(1) The read and check operation is used to read data in the user area and compare the read data with the programmed
data to check if the program operation is performed successfully. Send a memory read command (52h) to read data
in the user area.
(2) Send the user area checksum command (4Bh) to check program data using the checksum of user area.
(3) Send a user area blank check command (4Dh) to check if the user area has data.
Figure 50.40
Procedure to Check Data in the User Area
4Dh (user area blank check command)
06h (blank)
D2h, XXh (error code)
52h, read data (response)
Repeat until all data in the
user program are compared.
4Bh (user area checksum command)
5Bh, checksum of the user area
52h (memory read command)
Serial
programmer
CDh, 52h (not blank)
Checksum of the user area
Check if the user area is
blank
(2)
(1)
(3)
MCU