H8SXSLASH1663M datasheet(1224/1504 Pages) RENESAS

1224 / 1504 page

Section 25 Flash Memory

Rev. 2.00 Sep. 24, 2008 Page 1192 of 1468

REJ09B0412-0200

• Programming

Programming is executed by the programming selection and 128-byte programming

commands.

Firstly, the host should send the programming selection command and select the programming

method and programming MATs. There are two programming selection commands, and

selection is according to the area and method for programming.

1. User boot MAT programming selection

2. User MAT programming selection

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.

Where the sequence of programming operations that is executed includes programming with

another method or of another MAT, the procedure must be repeated from the programming

selection command.

The sequence for the programming selection and 128-byte programming commands is shown

in figure 25.27.

Transfer of the

programming

program

Host

Boot program

Programming selection (H'42, H'43)

ACK

Programming

128-byte programming (address, data)

ACK

128-byte programming (H'FFFFFFFF)

ACK

Repeat

Figure 25.27 Programming Sequence

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