Rev. 1.00, 09/03, page 586 of 704
Command or response
Size
Data
Checksum
Error response
Error code
Command or response
Error response
n-byte command or
n-byte response
One-byte command
or one-byte response
Address
Command
Data (n bytes)
Checksum
128-byte programming
Size
Response
Data
Checksum
Memory read
response
Figure 20.21 Communication Protocol Format
•
Command (one byte): Commands including inquiries, selection, programming, erasing, and
checking
•
Response (one byte): Response to an inquiry
•
Size (one byte): The amount of data for transfer excluding the command, amount of data, and
checksum
•
Checksum (one byte): The checksum is calculated so that the total of all values from the
command byte to the SUM byte becomes H
′
00.
•
Error response (one byte): Error response to a command
•
Error code (one byte): Type of the error
•
Address (four bytes): Address for programming
•
Data (n bytes): Data to be programmed (The size is indicated in the response to the
programming unit inquiry.)
•
Size (four bytes): Four-byte response to a memory read
Summary of Contents for H8S/2437
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