R26 datasheet(14/487 Pages) RENESAS

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18.

A/D Converter ............................................................................................................................. 338

18.1

One-Shot Mode ..................................................................................................................................... 342

18.2

Repeat Mode .......................................................................................................................................... 345

18.3

Sample and Hold ................................................................................................................................... 348

18.4

A/D Conversion Cycles ......................................................................................................................... 348

18.5

Internal Equivalent Circuit of Analog Input .......................................................................................... 349

18.6

Output Impedance of Sensor under A/D Conversion ............................................................................ 350

18.7

Notes on A/D Converter ........................................................................................................................ 351

19.

Flash Memory ............................................................................................................................. 352

19.1

Overview ............................................................................................................................................... 352

19.2

Memory Map ......................................................................................................................................... 353

19.3

Functions to Prevent Rewriting of Flash Memory ................................................................................ 355

19.3.1

ID Code Check Function .................................................................................................................. 355

19.3.2

ROM Code Protect Function ............................................................................................................ 356

19.4

CPU Rewrite Mode ............................................................................................................................... 357

19.4.1

EW0 Mode ........................................................................................................................................ 358

19.4.2

EW1 Mode ........................................................................................................................................ 358

19.4.3

Software Commands ......................................................................................................................... 367

19.4.4

Status Registers ................................................................................................................................. 372

19.4.5

Full Status Check .............................................................................................................................. 373

19.5

Standard Serial I/O Mode ...................................................................................................................... 375

19.5.1

ID Code Check Function .................................................................................................................. 375

19.6

Parallel I/O Mode .................................................................................................................................. 378

19.6.1

ROM Code Protect Function ............................................................................................................ 378

19.7

Notes on Flash Memory ........................................................................................................................ 379

19.7.1

CPU Rewrite Mode ........................................................................................................................... 379

20.

Electrical Characteristics ............................................................................................................ 382

20.1

N, D Version .......................................................................................................................................... 382

20.2

J, K Version ........................................................................................................................................... 407

21.

Usage Notes ............................................................................................................................... 427

21.1

Notes on Clock Generation Circuit ....................................................................................................... 427

21.1.1

Stop Mode ......................................................................................................................................... 427

21.1.2

Wait Mode ........................................................................................................................................ 427

21.1.3

Oscillation Stop Detection Function ................................................................................................. 427

21.1.4

Oscillation Circuit Constants ............................................................................................................ 427

21.2

Notes on Interrupts ................................................................................................................................ 428

21.2.1

Reading Address 00000h .................................................................................................................. 428

21.2.2

SP Setting .......................................................................................................................................... 428

21.2.3

External Interrupt and Key Input Interrupt ....................................................................................... 428

21.2.4

Changing Interrupt Sources .............................................................................................................. 429

21.2.5

Changing Interrupt Control Register Contents ................................................................................. 430

21.3

Notes on Timers .................................................................................................................................... 431

21.3.1

Notes on Timer RA ........................................................................................................................... 431

21.3.2

Notes on Timer RB ........................................................................................................................... 432

21.3.3

Notes on Timer RC ........................................................................................................................... 436

21.3.4

Notes on Timer RE ........................................................................................................................... 437

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