h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 488

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

• Command, H'58, (one byte): Erasure
• Size, (one byte): The number of bytes that represents the block number
• Block number (one byte): H'FF
• SUM (one byte): Checksum
• Response, H'06, (one byte): Response to end of erasure (ACK)
Memory read: The boot program will return the data in the specified address.
• Command: H'52 (1 byte): Memory read
• Size (1 byte): Amount of data that represents the area, read address, and read size (fixed at 9)
• Area (1 byte)
• 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 (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
Rev. 2.00, 03/04, page 456 of 534
Command
Response
Command
Response
This is fixed to 1.
Stop code for erasure
When erasure is to be performed after the block number H′FF has been sent, the procedure
should be executed from the erasure selection command.
H'00: User boot MAT
H'01: User MAT
An address error occurs when the area setting is incorrect.
H'58
H'06
H'52
Read size
H'52
Data
SUM
Size
Size
Read size
···
Block number
Area
Read address
SUM
SUM