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CHAPTER 17 FLASH MEMORY
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Temporary Sector Protect Cancel
Once a sector is protected by enable sector protect, write/erase operations are disabled unless it breaks
down. However, the temporary sector protect cancel operation can cancel the protection information in the
protected sector temporarily. This operation is set by keeping an application of V
ID
to MD1. In this
period, the sector protection information that is set before is ignored, and so write/erase operations can be
performed in all sectors. When MD1 returns to "1" (=3.3 V), this operation is canceled and all sectors
protected before are protected again. Figure 17.6-2 shows the temporary sector protect cancel algorithm.
Figure 17.6-2 Temporary Sector Protect Cancel Algorithm
Start
MD1=VID
*1
Execute erase or write operations
MD1="H"
Sector protect cancellation end
*2
*1: The protection of all protected sectors is
cancelled.
*2: Sectors protected before are protected
again.
Summary of Contents for FR60Lite
Page 3: ......
Page 5: ......
Page 115: ...100 CHAPTER 3 CPU AND CONTROL UNITS ...
Page 127: ...112 CHAPTER 4 I O PORTS ...
Page 143: ...128 CHAPTER 5 INTERRUPT CONTROLLER ...
Page 155: ...140 CHAPTER 6 EXTERNAL INTERRUPT AND NMI CONTROLLER ...
Page 197: ...182 CHAPTER 9 PPG Programmable Pulse Generator ...
Page 337: ...322 CHAPTER 13 UART ...
Page 417: ...402 CHAPTER 16 DMAC DMA Controller ...
Page 445: ...430 CHAPTER 17 FLASH MEMORY ...
Page 451: ...436 CHAPTER 18 SERIAL PROGRAMMING CONNECTION ...
Page 493: ...478 APPENDIX F Precautions on Handling ...
Page 494: ...479 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Page 507: ...492 INDEX ...
Page 509: ......