r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 992

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Section 22 Flash Memory
• Command Error
Command errors are generated by undefined commands, commands sent in an incorrect order, and
the inability to accept a command. For example, sending the clock-mode selection command
before device selection or an inquiry command after the transition-to-programming/erasure state
command generates a command error.
• Order of Commands
In the inquiry-and-selection state, commands should be sent in the following order.
1. Send the inquiry on supported devices command (H'20) to get the list of supported devices.
2. Select a device from the returned device information, and send the device selection command
3. Send the inquiry on clock mode command (H'21) to get the available clock modes.
4. Select a clock mode from among the returned clock modes, and send the clock-mode selection
5. After selection of the device and clock mode, send the commands to inquire about frequency
6. Taking into account the returned information on the frequency multipliers and operating
7. After the device and clock mode have been selected, get the information required for
8. After making all necessary inquiries and the new bit rate selection, send the transition-to-
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Error
response
 Error response H'80 (1 byte): Command error
 Command H'xx (1 byte): Received command
(H'10) to select that device.
command (H'11).
multipliers (H'22) and operating frequencies (H'23) to get the information required to select a
new bit rate.
frequencies, send a new-bit-rate selection command (H'3F).
programming and erasure of the user boot MAT and user MAT by sending the commands to
inquire about the user boot MAT (H'24), user MAT (H'25), erasure block (H'26), and
programming size (H'27).
programming/erasure state command (H'40) to place the boot program in the
programming/erasure state.
H'80
H'xx