Renesas RL78/I1D Application Note page 2

RL78/I1D
Contents
1. Specification ............................................................................................................................................ 3
2. Operation condition confirmation ............................................................................................................ 4
3. Hardware explanation ............................................................................................................................. 5
3.1. Example of hardware structure ........................................................................................................ 5
3.2. Used pin list ..................................................................................................................................... 5
4. Software explanation .............................................................................................................................. 6
4.1. Outline of operation ......................................................................................................................... 6
4.2. Setting of option byte ....................................................................................................................... 7
4.3. List of Constants .............................................................................................................................. 7
4.4. List of Variable ................................................................................................................................. 8
4.5. Function list ...................................................................................................................................... 9
4.6. Function specification .................................................................................................................... 10
4.7. Flow chart ...................................................................................................................................... 14
4.7.1. The main processing .............................................................................................................. 14
4.7.2. Initialization ............................................................................................................................. 15
4.7.3. Peripheral function Initialization ............................................................................................. 16
4.7.4. I/O Port Setup ......................................................................................................................... 16
4.7.5. CPU clock initialization ........................................................................................................... 18
4.7.6. 12-bit interval timer initialization ............................................................................................. 23
4.7.7. Clock output initialization ........................................................................................................ 24
4.7.8. INTP0 initialization .................................................................................................................. 24
4.7.9. The main user initialization ..................................................................................................... 25
4.7.10. INTP0 interrupt enable processing ..................................................................................... 25
4.7.11. 12-bit interval timer start processing ................................................................................... 26
4.7.12. Clock output start processing ............................................................................................. 26
4.7.13. Flash operation mode switching (LV) processing ............................................................... 27
4.7.14. Flash operation mode switching (LS normal) processing ................................................... 29
4.7.15. Flash operation mode switching (LS low consumption) processing ................................... 31
4.7.16. Flash operation mode switching (HS) processing .............................................................. 32
4.7.17. A/D converter initialization .................................................................................................. 34
4.7.18. A/D conversion operation start processing ......................................................................... 35
4.7.19. A/D converter stop processing ........................................................................................... 35
4.7.20. Flash operation mode switching (LP) processing ............................................................... 36
4.7.21. External interruption (INTP0) processing ........................................................................... 37
4.7.22. 12-bit interval timer interrupt processing ............................................................................ 39
4.7.23. A/D conversion complete interrupt processing ................................................................... 40
4.7.24. A/D conversion result acquisition process .......................................................................... 40
5. Power supply current measurement of the flash operating modes ...................................................... 41
6. Sample code ......................................................................................................................................... 42
7. Reference document ............................................................................................................................ 42
R01AN3597EJ0100 Rev.1.00
Jan. 31, 2017
Operation state switching IAR
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