p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 572

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 19 Flash Memory (0.18-µm F-ZTAT Version)
Command
• Command, H'40 (1 byte): Transition to programming/erasing state
Response
• Response, H'06 (1 byte): Response to transition to programming/erasing state.
Error Response
• Error response, H'C0 (1 byte): Error response to blank check of user boot MAT
• Error code, H'51 (1 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
command, or an inquiry command after the transition to programming/erasing state command, are
such examples.
Error Response
• Error response, H'80 (1 byte): Command error
• Command, H'xx (1 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 to
Rev. 1.00 Sep. 21, 2006 Page 534 of 658
REJ09B0310-0100
The boot program will return ACK when the user MAT and user boot MAT have been erased
normally by the transferred erasing program.
An error occurred and erasure was not completed.
with a device selection (H'10) command.
and set.
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.
the returned information on division ratios and operating frequencies.
Command Error
Command Order
H'40
H'06
H'C0
H'80
H'51
H'xx