r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 998

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

Section 22 Flash Memory
• Erasure
Erasure is performed by issuing the erasure selection command and then one or more block
erasure commands.
Firstly, the host sends the erasure selection command to select erasure; after that, it sends a block
erasure command to actually erase a specific block. To erase multiple blocks, send further block
erasure commands. To terminate erasure, the host should send a block erasure command with the
block number H'FF. After this, the boot program waits for the next programming/erasure selection
command.
The sequence of erasure by the erasure selection command and block erasure command is shown
in figure 22.27.
Rev. 1.00 Sep. 21, 2007 Page 972 of 1124
REJ09B0402-0100
Repeat
Host
Figure 22.27 Sequence of Erasure
Erasure selection (H'48)
Erasure (block number)
Erasure (H'FF)
ACK
ACK
ACK
performs erasure
Boot program
program that
Transfer the
Erasure