r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 1114

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 21 Flash Memory
The specified address should match the unit for programming of data. For example, when the
programming is in 128-byte units, the lower byte of the address should be H'00 or H'80.
When there are less than 128 bytes of data to be programmed, the host should fill the rest with
H'FF.
Sending the 128-byte programming command with the address of H'FFFFFFFF will stop the
programming operation. The boot program will interpret this as the end of the programming and
wait for selection of programming or erasing.
• Command, H'50, (one byte): 128-byte programming
• Programming Address (four bytes): End code is H'FF, H'FF, H'FF, H'FF.
• SUM (one byte): Checksum
• Response, H'06, (one byte): Response to 128-byte programming
• Error Response, H'D0, (one byte): Error response for 128-byte programming
• ERROR: (one byte): Error code
Rev. 1.00 Sep. 19, 2008 Page 1086 of 1270
REJ09B0466-0100
Command
Response
Error Response
On completion of programming, the boot program will return ACK.
H'11: Checksum error
H'53: Programming error
An error has occurred in programming and programming cannot be continued.
H'50
H'06
H'D0
Address
ERROR
SUM