r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 1173

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

• Error code, H'51, (one byte): Erasing error
(7)
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
or an inquiry command after the transition to programming/erasing state command, are examples.
• Error response, H'80, (one byte): Command error
• Command, H'xx, (one byte): Received command
(8)
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
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
5. After selection of the device and clock mode, inquiries for other required information should
6. A new bit rate should be selected with the new bit-rate selection (H'3F) command, according
7. After selection of the device and clock mode, inquiries for the information of
8. After making inquiries and selecting a new bit rate, issue the transition to
Error Response
Error Response
An error occurred and erasure was not completed.
with a device-selection (H'10) command.
and set.
be made, such as the multiplication-ratio inquiry (H'22) or operating frequency inquiry (H'23),
which are needed for a new bit-rate selection.
to the returned information on multiplication ratios and operating frequencies.
programming/erasing to the user MAT should be made by the user MATs information inquiry
(H'25), erased block information inquiry (H'26), and programming unit inquiry (H'27).
programming/erasing state command (H'40). The boot program will then enter the
programming/erasing state.
Command Error
Command Order
H'C0
H'80
H'51
H'xx
Rev. 1.00 Sep. 19, 2008 Page 1143 of 1342
Section 22 Flash Memory
REJ09B0467-0100