Data Area Checksum; User Area Blank Check - Renesas RX100 Series User Manual

RX13T Group
31.10.9.3

Data Area Checksum

This command used to obtain the checksum of the entire data area. When the MCU receives this command, it adds data
from the start address to the end address in bytes in the data area, and sends the calculated result (checksum) as a
response.
Command 61h
Response 71h
SUM
Size (1 byte): Number of bytes for checksum of the data area (the value is always 04h)
Data area checksum (4 bytes): Calculated result of the data in the data area in bytes
SUM (1 byte): Value that is calculated so the sum of response data is 00h
31.10.9.4

User Area Blank Check

This command is used to check whether data is programmed in the user area.
When the MCU receives this command, it checks whether there is data in the entire user area. If there is no programmed
data, the MCU sends a response (06h). If there is at least 1 byte of programmed data, the MCU sends an error response.
Command 4Dh
Response 06h
Error response CDh
Error (1 byte): Error code
52h: Not blank
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
Size
Data area checksum
Error
31. Flash Memory (FLASH)
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