M16CSLASH29 datasheet(15/499 Pages) RENESAS

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A-8

20.4 CPU Rewrite Mode ..................................................................................................... 337

20.4.1 EW Mode 0 .......................................................................................................... 338

20.4.2 EW Mode 1 .......................................................................................................... 338

20.5 Register Description ................................................................................................... 339

20.5.1 Flash Memory Control Register 0 (FMR0) ........................................................... 339

20.5.2 Flash Memory Control Register 1 (FMR1) ........................................................... 340

20.5.3 Flash Memory Control Register 4 (FMR4) ........................................................... 340

20.6 Precautions in CPU Rewrite Mode ............................................................................. 345

20.6.1 Operation Speed .................................................................................................. 345

20.6.2 Prohibited Instructions.......................................................................................... 345

20.6.3 Interrupts .............................................................................................................. 345

20.6.4 How to Access...................................................................................................... 345

20.6.5 Writing in the User ROM Area .............................................................................. 345

20.6.6 DMA Transfer ....................................................................................................... 346

20.6.7 Writing Command and Data ................................................................................. 346

20.6.8 Wait Mode ............................................................................................................ 346

20.6.9 Stop Mode ............................................................................................................ 346

20.6.10 Low Power Consumption Mode and On-Chip Oscillator-Low Power Consumption Mode ... 346

20.7 Software Commands .................................................................................................. 347

20.7.1 Read Array Command (FF16)............................................................................... 347

20.7.2 Read Status Register Command (7016) ............................................................... 347

20.7.3 Clear Status Register Command (5016) ............................................................... 347

20.7.4 Program Command (4016) ................................................................................... 348

20.7.5 Block Erase .......................................................................................................... 349

20.8 Status Register ........................................................................................................... 351

20.8.1 Sequence Status (SR7 and FMR00 Bits )............................................................ 351

20.8.2 Erase Status (SR5 and FMR07 Bits) ................................................................... 351

20.8.3 Program Status (SR4 and FMR06 Bits) ............................................................... 351

20.8.4 Full Status Check ................................................................................................. 352

20.9 Standard Serial I/O Mode ........................................................................................... 354

20.9.1 ID Code Check Function ...................................................................................... 354

20.9.2 Example of Circuit Application in Standard Serial I/O Mode ................................ 358

20.10 Parallel I/O Mode ...................................................................................................... 360

20.10.1 ROM Code Protect Function .............................................................................. 360

20.11 CAN I/O Mode .......................................................................................................... 361

20.11.1 ID code check function ....................................................................................... 361

20.11.2 Example of Circuit Application in CAN I/O Mode................................................ 365

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