r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 1174

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

Section 22 Flash Memory
(9)
A programming selection command makes the boot program select the programming method, an
128-byte programming command makes it program the memory with data, and an erasing
selection command and block erasing command make it erase the block. The
programming/erasing commands are listed below.
Table 22.10 Programming/Erasing Commands
• Programming
Programming is executed by a programming-selection command and a 128-byte programming
command.
Firstly, the host should send the programming-selection command and select the programming
method and programming MATs. There is a programming selection command according to the
area and method for programming.
•
After issuing the programming selection command, the host should send the 128-byte
programming command. The 128-byte programming command that follows the selection
command represents the data programmed according to the method specified by the selection
command. When more than 128-byte data is programmed, 128-byte commands should repeatedly
be executed. Sending a 128-byte programming command with H'FFFFFFFF as the address will
stop the programming. On completion of programming, the boot program will wait for selection of
programming or erasing.
Rev. 1.00 Sep. 19, 2008 Page 1144 of 1342
REJ09B0467-0100
Command
H'43
H'50
H'48
H'58
H'52
H'4B
H'4D
H'4F
User MAT programming selection
Programming/Erasing State
Command Name
User MAT programming selection
128-byte programming
Erasing selection
Block erasing
Memory read
User MAT sum check
User MAT blank check
Boot program status inquiry
Transfers the erasing program
Checks whether the contents of the user MAT
are blank
Description
Transfers the user MAT programming program
Programs 128 bytes of data
Erases a block of data
Reads the contents of memory
Checks the checksum of the user MAT
Inquires into the boot program’s status