M16C28 Datasheet, PDF (16/423 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

20.11 Programmable I/O Ports ........................................................................................... 372
20.12 Electric Characteristic Differences Between Mask ROM and Flash Memory Version ... 373
20.13 Mask ROM Version ................................................................................................... 374
20.13.1 Internal ROM Area ............................................................................................. 374
20.13.2 Reserved Bit ....................................................................................................... 374
20.14 Flash Memory Version .............................................................................................. 375
20.14.1 Functions to Inhibit Rewriting Flash Memory Rewrite ........................................ 375
20.14.2 Stop Mode .......................................................................................................... 375
20.14.3 Wait Mode .......................................................................................................... 375
20.14.4 Low Power Dissipation Mode, On-Chip Oscillator Low Power Dissipation Mode ... 375
20.14.5 Writing Command and Data ............................................................................... 375
20.14.6 Program Command ............................................................................................ 375
20.14.7 Operation Speed ................................................................................................ 375
20.14.8 Instructions Inhibited Against Use ...................................................................... 375
20.14.9 Interrupts ............................................................................................................ 376
20.14.10 How to Access .................................................................................................. 376
20.14.11 Writing in the User ROM Area .......................................................................... 376
20.14.12 DMA Transfer ................................................................................................... 376
20.14.13 Regarding Programming/Erasure Times and Execution Time ......................... 376
20.14.14 Definition of Programming/Erasure Times ....................................................... 377
20.14.15 Flash Memory Version Electrical Characteristics 10,000 E/W cycle products (U7, U9) ... 377
20.14.16 Boot Mode ........................................................................................................ 377
20.14.17 Standard Serial I/O Mode ................................................................................ 377
20.15 Noise ........................................................................................................................ 378
20.15.1 Trace of Print Board (85-pin Package) ............................................................... 378
20.16 Instruction for a Device Use ..................................................................................... 379
Appendix 1. Package Dimensions .................................................................. 380
Appendix 2. Functional Comparison ................................................................382
Appendix 2.1 Difference between M16C/28 Group Normal-ver. and M16C/28 Group T-ver./V-ver. .... 382
Appendix 2.2 Difference between M16C/28 Group and M16C/29 Group (Normal-ver.) .... 383
Register Index ..................................................................................................384
A-9