p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 562

• 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)
All of these commands, except for boot program status inquiry (H'4F), will be valid until the boot
program receives the programming/erasing state transition command (H'40). The host can choose
the needed commands out of the above commands and make inquiries. The boot program status
inquiry command (H'4F) remains valid even after the boot program has received the
programming/erasing state transition command (H'40).
(a)
The boot program will return the device codes of the supported devices and the product names in
response to the supported device inquiry command.
Command
• Command, H'20 (1 byte): Inquiry regarding supported devices
Response
• Response, H'30 (1 byte): Response to the supported device inquiry
• Size (1 byte): The number of bytes to be transferred, excluding the command, size, and
• Number of devices (1 byte): The number of device types supported by the boot program in the
• Number of characters (1 byte): The number of characters in the device codes and boot
• Device code (4 bytes): ASCII code of the supported product name
• Product name (n bytes): ASCII code of the boot program type name
• SUM (1 byte): Checksum
Rev. 1.00 Sep. 21, 2006 Page 524 of 658
REJ09B0310-0100
checksum, that is, the total amount of data consisting the number of devices, the number of
characters, device codes, and product names
microcomputer
program’s name
The checksum is calculated so that the total number of all values from the command byte to
the SUM byte becomes H'00.
Supported Device Inquiry
H'20
H'30
Number of
characters
···
SUM
Size
Device code
Number of devices
Product name