HD64F3437TF16 Datasheet, PDF (24/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

18.2.2 Socket Adapter Pin Assignments and Memory Map............................................ 365
18.3 PROM Programming ......................................................................................................... 368
18.3.1 Programming and Verification ............................................................................. 368
18.3.2 Notes on Programming ......................................................................................... 373
18.3.3 Reliability of Programmed Data ........................................................................... 374
Section 19 ROM (32-kbyte Dual-Power-Supply Flash Memory Version)......... 375
19.1 Flash Memory Overview ................................................................................................... 375
19.1.1 Flash Memory Operating Principle ...................................................................... 375
19.1.2 Mode Programming and Flash Memory Address Space ...................................... 376
19.1.3 Features................................................................................................................. 376
19.1.4 Block Diagram...................................................................................................... 377
19.1.5 Input/Output Pins.................................................................................................. 378
19.1.6 Register Configuration.......................................................................................... 378
19.2 Flash Memory Register Descriptions................................................................................. 379
19.2.1 Flash Memory Control Register (FLMCR) .......................................................... 379
19.2.2 Erase Block Register 1 (EBR1) ............................................................................ 380
19.2.3 Erase Block Register 2 (EBR2) ............................................................................ 381
19.2.4 Wait-State Control Register (WSCR)................................................................... 382
19.3 On-Board Programming Modes......................................................................................... 385
19.3.1 Boot Mode ............................................................................................................ 386
19.3.2 User Programming Mode...................................................................................... 392
19.4 Programming and Erasing Flash Memory ......................................................................... 394
19.4.1 Program Mode ...................................................................................................... 394
19.4.2 Program-Verify Mode .......................................................................................... 395
19.4.3 Programming Flowchart and Sample Program..................................................... 396
19.4.4 Erase Mode ........................................................................................................... 398
19.4.5 Erase-Verify Mode................................................................................................ 398
19.4.6 Erasing Flowchart and Sample Program .............................................................. 399
19.4.7 Prewrite Verify Mode ........................................................................................... 412
19.4.8 Protect Modes ....................................................................................................... 412
19.4.9 Interrupt Handling during Flash Memory Programming and Erasing.................. 413
19.5 Flash Memory Emulation by RAM ................................................................................... 415
19.6 Flash Memory Writer Mode (H8/3434F) .......................................................................... 418
19.6.1 Writer Mode Setting ............................................................................................. 418
19.6.2 Socket Adapter and Memory Map........................................................................ 418
19.6.3 Operation in Writer Mode..................................................................................... 420
19.7 Flash Memory Programming and Erasing Precautions...................................................... 428
Section 20 ROM (60-kbyte Dual-Power-Supply Flash Memory Version)......... 437
20.1 Flash Memory Overview ................................................................................................... 437
20.1.1 Flash Memory Operating Principle ...................................................................... 437
20.1.2 Mode Programming and Flash Memory Address Space ...................................... 438
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