Renesas H8S Series Hardware Manual page 860

Section 21 Flash Memory (0.18-µm F-ZTAT Version)
Command H'40
• Command, H'40 (1 byte): Transition to programming/erasing state
Response H'06
• Response, H'06 (1 byte): Response to transition to programming/erasing state.
The boot program will return ACK when the user MAT and user boot MAT have been erased
normally by the transferred erasing program.
Error Response H'C0
• Error response, H'C0 (1 byte): Error response to blank check of user boot MAT
• Error code, H'51 (1 byte): Erasing error
An error occurred and erasure was not completed.
(7) Command Error
A command error will occur when a command is undefined, the order of commands is incorrect,
or a command is unacceptable. Issuing a clock mode selection command before a device selection
command, or an inquiry command after the transition to programming/erasing state command, are
such examples.
Error Response H'80
• Error response, H'80 (1 byte): Command error
• Command, H'xx (1 byte): Received command
(8) Command Order
The order for commands in the inquiry/selection state is shown below.
1. A supported device inquiry (H'20) should be made to inquire about the supported devices.
2. The device should be selected from among those described by the returned information and set
with a device selection (H'10) command.
3. A clock mode inquiry (H'21) should be made to inquire about the supported clock modes.
4. The clock mode should be selected from among those described by the returned information
and set.
5. After selection of the device and clock mode, inquiries for other required information should
be made, such as the division ratio inquiry (H'22) or operating frequency inquiry (H'23), which
are needed for a new bit rate selection.
6. A new bit rate should be selected with the new bit rate selection (H'3F) command, according to
the returned information on division ratios and operating frequencies.
Rev. 3.00 Jul. 14, 2005 Page 812 of 986
REJ09B0098-0300
H'51
H'xx