3069RF-ZTAT Datasheet, PDF (681/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

• 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
H'xx
 Error response, H'80, (1 byte) : Command error
 Command, H'xx, (1 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
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 multiplication-ratio inquiry (H'22) or operating frequency inquiry (H'23).
(6) A new bit rate should be selected with the new bit-rate selection (H'3F) command, according
to the returned information on multiplication ratios and operating frequencies.
(7) After selection of the device and clock mode, the information of the user boot MAT and user
MAT should be made to inquire about the user boot MATs information inquiry (H'24), user
MATs information inquiry (H'25), erased block information inquiry (H'26), programming unit
inquiry (H'27).
(8) After making inquiries and selecting a new bit rate, issue the transition to
programming/erasing state (H'40) command. The boot program will then enter the
programming/erasing state.
• Programming/erasing State
A programming selection command makes the boot program select the programming method, an
128-byte programming command makes it program the memory with data, and an erasing
selection command and block erasing command make it erase the block. The
programming/erasing commands are listed below.
Rev. 5.0, 09/04, page 659 of 978