SH7243 datasheet(27/1726 Pages) RENESAS

27 / 1726 page

Rev. 1.00 Jun. 26, 2008 Page xxvii of xxx

25.11.9

Handling of Unused USB Pins ....................................................................... 1380

Section 26 Flash Memory ..................................................................................1381

26.1

Features........................................................................................................................... 1381

26.2

Overview......................................................................................................................... 1383

26.2.1

Block Diagram................................................................................................ 1383

26.2.2

Operating Mode .............................................................................................. 1384

26.2.3

Mode Comparison........................................................................................... 1386

26.2.4

Flash Memory Configuration.......................................................................... 1387

26.2.5

Block Division ................................................................................................ 1388

26.2.6

Programming/Erasing Interface ...................................................................... 1389

26.3

Input/Output Pins............................................................................................................ 1391

26.4

Register Descriptions ...................................................................................................... 1392

26.4.1

Registers ......................................................................................................... 1392

26.4.2

Programming/Erasing Interface Registers ...................................................... 1394

26.4.3

Programming/Erasing Interface Parameters ................................................... 1401

26.5

On-Board Programming Mode ....................................................................................... 1417

26.5.1

Boot Mode ...................................................................................................... 1417

26.5.2

USB Boot Mode (SH7286 and SH7285) ........................................................ 1421

26.5.3

User Program Mode........................................................................................ 1424

26.5.4

User Boot Mode (SH7286 and SH7285) ........................................................ 1436

26.6

Protection ........................................................................................................................ 1441

26.6.1

Hardware Protection ....................................................................................... 1441

26.6.2

Software Protection......................................................................................... 1442

26.6.3

Error Protection............................................................................................... 1442

26.7

Usage Notes .................................................................................................................... 1444

26.7.1

Switching between User MAT and User Boot MAT...................................... 1444

26.7.2

Interrupts during Programming/Erasing ......................................................... 1445

26.7.3

Other Notes ..................................................................................................... 1447

26.8

Supplementary Information ............................................................................................ 1449

26.8.1

Specifications of the Standard Serial Communications Interface

in Boot Mode .................................................................................................. 1449

26.8.2

Areas for Storage of the Procedural Program and Data for Programming...... 1480

26.9

Programmer Mode .......................................................................................................... 1488

Section 27 On-Chip RAM .................................................................................1489

27.1

Features........................................................................................................................... 1489

27.2

Usage Notes .................................................................................................................... 1491

27.2.1

Page Conflict................................................................................................... 1491

27.2.2

RAME and RAMWE Bits .............................................................................. 1491

SH7243 Datasheet(PDF) 27 Page - Renesas Technology Corp

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