h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 481

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

Transition to Programming/Erasing State: The boot program will transfer the erasing program,
and erase the user MATs and user boot MATs in that order. On completion of this erasure, ACK
will be returned and will enter the programming/erasing state.
The host should select the device code, clock mode, and new bit rate with device selection, clock-
mode selection, and new bit-rate selection commands, and then send the command for the
transition to programming/erasing state. These procedures should be carried out before sending of
the programming selection command or program data.
• Command, H'40, (one byte): Transition to programming/erasing state
• Response, H'06, (one byte): Response to transition to programming/erasing state
• Error response, H'C0, (one byte): Error response for user boot MAT blank check
• Error code, H'51, (one byte): Erasing error
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 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
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
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
Command
Response
Error Response
Error Response
The boot program will send ACK when the user MAT and user boot MAT have been erased
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 multiplication-ratio inquiry (H'22) or operating frequency inquiry (H'23),
which are needed for a new bit-rate selection.
H'40
H'06
H'C0
H'80
H'51
H'xx
Rev. 2.00, 03/04, page 449 of 534