Datasheet

Section 20 Flash Memory (0.18-μm F-ZTAT Version)
Rev.6.00 Mar. 18, 2009 Page 783 of 980
REJ09B0050-0600
These boot program states are shown in figure 20.17.
Transition to
programming/erasing
Programming/erasing
wait
Checking
Inquiry
Response
ErasingProgramming
Reset
Bit-rate-adjustment
state
Operations for erasing
user MATs and user
boot MATs
Operations for
inquiry and selection
Operations for
programming
Operations for
checking
Operations for
erasing
Operations for
response
Inquiry/response
wait
Figure 20.17 Boot Program States
(2) Bit-Rate-Adjustment State
The bit rate is calculated by measuring the period of transfer of a low-level byte (H'00) from the
host. The bit rate can be changed by the command for a new bit rate selection. After the bit rate
has been adjusted, the boot program enters the inquiry and selection state. The bit-rate-adjustment
sequence is shown in figure 20.18.