Renesas RL78/G13 - Default Chapter; Table of Contents

RL78/G13 Clock Generator (Clock Switching) CC-RL
R01AN2831EJ0100 Rev. 1.00 Page 2 of 51
May 28, 2015
Contents
1.
Specifications ...................................................................................................................................... 4
2. Operation Check Conditions ................................................................................................................. 6
3. Related Application Note...................................................................................................................... 6
4. Description of the Hardware ................................................................................................................. 7
4.1 Hardware Configuration Example ......................................................................................................... 7
4.2 List of Pins to be Used ......................................................................................................................... 8
5. Software Description ............................................................................................................................ 9
5.1 Operation Overview ............................................................................................................................. 9
5.2 File Configuration .............................................................................................................................. 10
5.3 List of Option Byte Settings ................................................................................................................ 11
5.4 List of Constants ................................................................................................................................ 12
5.5 List of Variables ................................................................................................................................ 13
5.6 List of Functions ................................................................................................................................ 13
5.7 Function Specifications ...................................................................................................................... 14
5.8 Flowcharts ........................................................................................................................................ 21
5.8.1 Initialization Function .............................................................................................................................. 22
5.8.2 System Function ...................................................................................................................................... 23
5.8.3 I/O Port Setup .......................................................................................................................................... 24
5.8.4 CPU Clock Setup ..................................................................................................................................... 25
5.8.5 Timer Array Unit 0 (TAU0) Setup .......................................................................................................... 29
5.8.6 Setting up 12-bit Interval Timer .............................................................................................................. 30
5.8.7 Setting up External Interrupt Input .......................................................................................................... 31
5.8.8 Main Processing ...................................................................................................................................... 32
5.8.9 Setting to Start INTP0 External Interrupt Processing. ............................................................................. 33
5.8.10 Setting to Start Operation of Channel 0 of TAU0 ................................................................................... 34
5.8.11 Switching Clock ...................................................................................................................................... 35
5.8.12 Switching from HOCO Clock to X1 Oscillation Clock. .......................................................................... 36
5.8.13 Switching from X1 Oscillation Clock to XT1 Oscillation Clock ............................................................ 37
5.8.14 Switching from XT1 Oscillation Clock to HOCO Clock ........................................................................ 38
5.8.15 Getting Clock Status ................................................................................................................................ 39
5.8.16 Getting X1 Oscillation Clock Status ........................................................................................................ 40
5.8.17 Getting XT1 Oscillation Clock Status ..................................................................................................... 41
5.8.18 Getting HOCO Clock Status .................................................................................................................... 42
5.8.19 Stopping Clock ........................................................................................................................................ 43
5.8.20 Getting Parameters of Channel 0 of TAU0 .............................................................................................. 44
5.8.21 Restarting Channel 0 of TAU0 ................................................................................................................ 45
5.8.22 Changing Interval of Channel 0 of TAU0 ............................................................................................... 46
5.8.23 Setting to Stop Channel 0 of TAU0 ......................................................................................................... 47
5.8.24 Processing of Interval Timer Interrupt of Channel 0 of TAU0 ................................................................ 48
5.8.25 Processing of INTP0 External Interrupt .................................................................................................. 49
5.8.26 Waiting in Units of 1 ms .......................................................................................................................... 50
6. Sample Code ..................................................................................................................................... 51