r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 980
r5f71374an80fpv
Manufacturer Part Number
r5f71374an80fpv
Description
32-bit Risc Microcomputer Superh?? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5F71374AN80FPV.pdf
(1154 pages)
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Section 22 Flash Memory
All commands in the above table, except for the boot program state inquiry command (H'4F), are
valid until the boot program accepts the transition-to-programming/erasure state command (H'40).
That is, until the transition command is accepted, the host can continue to send commands listed in
the above table until it has made the necessary inquiries and selections. The host can send the boot
program state inquiry command (H'4F) even after acceptance of the transition-to-
programming/erasure state command (H'40) by the boot program.
(1)
In response to the inquiry on supported devices, the boot program returns the device codes of the
devices it supports and the product names of their respective boot programs.
Rev. 1.00 Sep. 21, 2007 Page 954 of 1124
REJ09B0402-0100
Command
Response
Command H'20 (1 byte): Inquiry on supported devices
Response H'30 (1 byte): Response to the inquiry on supported devices
Size (1 byte): The length of data for transfer excluding the command code, this field (size),
Number of devices (1 byte): The number of device models supported by the boot program
Number of characters (1 byte): The number of characters in the device code and product
Device code (4 bytes): Device code of a supported device (ASCII encoded)
Product name (n bytes): Product code of the boot program (ASCII encoded)
SUM (1 byte): Checksum
Inquiry on supported devices
and the checksum. Here, it is the total number of bytes taken up by the number of devices,
number of characters, device code, and product name fields.
embedded in the microcomputer.
name fields.
This is set so that the total sum of all bytes from the command code to the checksum is
H'00.
H'20
H'30
Number of
characters
…
SUM
Size
Device code
No. of devices
Product name
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