3069RF-ZTAT Datasheet, PDF (688/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

 Area (1 byte)
H'00 : User boot MAT
H'01 : User MAT
An address error occurs when the area setting is incorrect.
 Read address (4 bytes): Start address to be read from
 Read size (4 bytes): Size of data to be read
 SUM (1 byte): Checksum
Response H'52
Read size
Data
···
SUM
 Response: H'52 (1 byte): Response to memory read
 Read size (4 bytes): Size of data to be read
 Data (n bytes): Data for the read size from the read address
 SUM (1 byte): Checksum
Error
response H'D2
ERROR
 Error response: H'D2 (1 byte): Error response to memory read
 ERROR: (1 byte): Error code
H'11: Sum check error
H'2A: Address error
The read address is not in the MAT.
H'2B: Size error
The read size exceeds the MAT.
• User-Boot Program Sum check
The boot program will return the byte-by-byte total of the contents of the bytes of the user-boot
program.
Command H'4A
 Command, H'4A, (1 byte) : Sum check for user-boot program
Response H'5A
Size
Checksum of user boot program
SUM
 Response, H'5A, (1 byte) : Response to the sum check of user-boot program
 Size (1 byte) : The number of bytes that represents the checksum
This is fixed to 4.
 Checksum of user boot program (4 bytes) : Checksum of user boot MATs
The total of the data is obtained in byte units.
 SUM (1 byte) : Sum check for data being transmitted
Rev. 5.0, 09/04, page 666 of 978