H8S2472 Datasheet, PDF (1000/1250 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8S Family / H8S/2400 Series

Section 25 Flash Memory
(2) State Transition Diagram
The state transition after USB boot mode is initiated is shown in figure 25.10.
Boot mode initiation
(reset by boot mode)
H'55 ^reception
Enumeration
1.
2.
Wait for inquiry
setting command
Inquiry command reception
Inquiry command response
Processing of inquiry
setting command
3.
All user MAT erasure
Read/check command reception
4.
Wait for inquiry
programming/erasing
command
Command response
(Erasure _{completionc)o(mErmaasunrderseecleepcttiioonn)}
(Programming
completion)
(Program selection
command reception)
(Program data transmission)
Wait for inquiry
programming/erasing
command
Processing of
read/check command
(Erase-block specification)
Wait for inquiry
programming/erasing
command
Figure 25.10 USB Boot Mode State Transition Diagram
1. After a transition to the USB boot mode is made, the boot program embedded in this LSI is
initialized. This LSI performs enumeration to the host after the USB boot program is
initialized.
2. Inquiry information about the size, configuration, start address, and support status of the user
MAT is transmitted to the host.
3. After inquiries have finished, all user MAT are automatically erased.
Rev. 2.00 Aug. 20, 2008 Page 952 of 1198
REJ09B0403-0200