Datasheet

Section 20 Flash Memory (0.18-μm F-ZTAT Version)
Rev.6.00 Mar. 18, 2009 Page 786 of 980
REJ09B0050-0600
(4) 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.
Inquiry and selection commands are listed below.
Table 20.11 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 Multiplication Ratio Inquiry Inquiry regarding the number of frequency-
multiplied clock types, the number of
multiplication ratios, and the values of each
multiple
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 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 programming data
H'3F New Bit Rate Selection Selection of new bit rate
H'40 Transition to
Programming/Erasing State
Erasing of user MAT and user boot MAT, and
entry to programming/erasing state
H'4F Boot Program Status Inquiry Inquiry into the operated status of the boot
program
The selection commands, which are device selection (H'10), clock mode selection (H'11), and new
bit rate selection (H'3F), should be sent from the host in that order. These commands will certainly
be needed. When two or more selection commands are sent at once, the last command will be
valid.