Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 1727 of 1823
Jul 31, 2019
RX23W Group 50. Flash Memory (FLASH)
50.10.9.3 Data Area Checksum
50.10.9.4 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.
Error (1 byte): Error code
52h: Not blank
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 Size
Data area checksum
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
Command 4Dh
Response 06h
Error response CDh Error

Renesas RX Series Specifications

General

Core	RXv1, RXv2, RXv3
Flash Memory	Up to 8 MB
RAM	Up to 1 MB
Operating Voltage	1.62V to 5.5V
Operating Temperature	-40°C to +85°C or +105°C
Package	BGA, LQFP
ADC Resolution	12-bit
DAC Resolution	12-bit
Communication Interfaces	SCI, SPI, I2C, USB, Ethernet, CAN
Architecture	32-bit
Security Features	Memory Protection Unit (MPU)