Datasheet

Section 24 Flash Memory
Rev. 2.00 Sep. 28, 2009 Page 806 of 994
REJ09B0452-0200
(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 24.17 lists the inquiry and selection commands.
Table 24.17 Inquiry and Selection Commands
Command Command Name Description
H'20 Supported device inquiry Inquiry regarding device codes
H'10 Device selection Selection of device code
H'21 Clock mode inquiry Inquiry regarding numbers of clock modes and
values of each mode
H'11 Clock mode selection Indication of the selected clock mode
H'22 Division ratio inquiry Inquiry regarding the number of frequency-divided
clock types, the number of division ratios and the
values of each division
H'23 Operating clock frequency
inquiry
Inquiry regarding the maximum and minimum
values of the main clock and peripheral clocks
H'24 User boot MAT information
inquiry
Inquiry regarding the a number of user boot MATs
and the start and last addresses of each MAT
H'25 User MAT information inquiry Inquiry regarding the a number of user MATs and
the start and last addresses of each MAT
H'26 Block for erasing information
Inquiry
Inquiry regarding the number of blocks and the start
and last addresses of each block
H'27 Programming unit inquiry Inquiry regarding the unit of program data
H'3F New bit rate selection Selection of new bit rate
H'40 Transition to
programming/erasing state
Erasing of user MATs or user boot MATs, and entry
to programming/erasing state
H'4F Boot program status inquiry Inquiry into the operated status of the boot program