SH7055S Datasheet, PDF (858/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

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 with a clock-mode selection (H'11) command.
(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 MAT information inquiry (H'24), user
MAT information inquiry (H'25), erased block information inquiry (H'26), programming unit
inquiry (H'27), and two-MAT simultaneous programming information inquiry (H'28).
(8) After making inquiries and selecting a new bit rate, issue the command for transition to the
programming/erasing state (H'40). The boot program will then enter the programming/erasing
state.
Programming/Erasing State: In the programming/erasing state, a programming selection
command makes the boot program select the programming method, a 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. Table 22.19 lists the programming/erasing commands.
Rev.2.0, 07/03, page 820 of 960