r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 1177

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

• 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
(10) Erasure
Erasure is performed with the erasure selection and block erasure command.
Firstly, erasure is selected by the erasure selection command and the boot program then erases the
specified block. The command should be repeatedly executed if two or more blocks are to be
erased. Sending a block-erasure command from the host with the block number H'FF will stop the
erasure operating. On completion of erasing, the boot program will wait for selection of
programming or erasing.
The sequences of the issuing of erasure selection commands and the erasure of data are shown in
figure 22.15.
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
Rev. 1.00 Sep. 19, 2008 Page 1147 of 1342
Section 22 Flash Memory
REJ09B0467-0100