p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 560

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 19 Flash Memory (0.18-µm F-ZTAT Version)
4. Programming of 128 bytes
5. Memory read response
• Command (1 byte): Commands for inquiries, selection, programming, erasing, and checking
• Response (1 byte): Response to an inquiry
• Size (1 byte): The amount of transfer data excluding the command, size, and checksum
• Data (n bytes): Detailed data of a command or response
• Checksum (1 byte): The checksum is calculated so that the total of all values from the
• Error response (1 byte): Error response to a command
• Error code (1 byte): Type of the error
• Address (4 bytes): Address for programming
• Data (n bytes): Data to be programmed (n is indicated in the response to the programming unit
• Data size (4 bytes): Four-byte response to a memory read
Rev. 1.00 Sep. 21, 2006 Page 522 of 658
REJ09B0310-0100
1-byte command
or 1-byte response
n-byte command or
n-byte response
Error response
128-byte programming
Memory read
response
The size is not specified in the commands. The data size is indicated in the response to the
programming unit inquiry.
This response consists of r4 bytes of data.
command byte to the SUM byte becomes H'00.
inquiry.)
Figure 19.21 Communication Protocol Format
Address
Data size
Command or response
Command
Response
Data size
Command or response
Error code
Error response
Data
Data (n bytes)
Data
Checksum
Checksum
Checksum