H8S2112 Datasheet, PDF (721/894 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8S Family / H8S/2100 Series

Section 22 Flash Memory
(3) Inquiry and Selection States
The boot program returns information from the flash memory in response to the host's inquiry
commands and sets the device code, clock mode, and bit rate in response to the host's selection
command.
Table 22.15 lists the inquiry and selection commands.
Table 22.15 Inquiry and Selection Commands
Command
H'20
H'10
H'21
Command Name
Supported device inquiry
Device selection
Clock mode inquiry
H'11
H'22
Clock mode selection
Division ratio inquiry
H'23
H'24
H'25
H'26
H'27
H'3F
H'40
H'4F
Operating clock frequency
inquiry
User boot MAT information
inquiry
User MAT information inquiry
Block for erasing information
Inquiry
Programming unit inquiry
New bit rate selection
Transition to
programming/erasing state
Boot program status inquiry
Description
Inquiry regarding device codes
Selection of device code
Inquiry regarding numbers of clock modes and
values of each mode
Indication of the selected clock mode
Inquiry regarding the number of frequency-divided
clock types, the number of division ratios and the
values of each division
Inquiry regarding the maximum and minimum
values of the main clock and peripheral clocks
Inquiry regarding the a number of user MATs and
the start and last addresses of each MAT
Inquiry regarding the a number of user MATs and
the start and last addresses of each MAT
Inquiry regarding the number of blocks and the start
and last addresses of each block
Inquiry regarding the unit of program data
Selection of new bit rate
Erasing of user MAT, and entry to programming/
erasing state
Inquiry into the operated status of the boot program
Rev. 1.00 Mar. 18, 2008 Page 697 of 866
REJ09B0451-0100