h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 483

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

• 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 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 programming-selection and 128-byte programming commands is shown in
figure 14.25.
Repeat
Host
Programming selection (H'42, H'43)
Figure 14.25 Programming Sequence
128-byte programming (address, data)
128-byte programming (H'FFFFFFFF)
ACK
ACK
ACK
Rev. 2.00, 03/04, page 451 of 534
Boot program
Transfer of the
programming
Programming
program