r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 1159

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

(2)
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 22.11.
Bit-Rate-Adjustment State
Programming/erasing
Operations for erasing
Transition to
programming/erasing
wait
user MATs
Programming
Operations for
Bit-rate-adjustment
programming
Inquiry/response
Figure 22.10 Boot Program States
state
wait
Reset
inquiry and selection
Erasing
Inquiry
Operations for
Operations for
erasing
Rev. 1.00 Sep. 19, 2008 Page 1129 of 1342
Checking
Response
Section 22 Flash Memory
Operations for
Operations for
response
checking
REJ09B0467-0100