10
10-73
Rev.1.0
(5) Up/down event count mode
In up/down event count mode, the TID uses one of two train of signals (TIN8 or TIN10) entered
from the outside as the clock source and the other (TIN9 or TIN11) as the up/down signal with
which to run the counter. The counter is switched between up-count and down-count by the input
state of the up/down signal.
By detecting the rising and falling edges of the externally sourced clock signal, the TID generates
a clock that is synchronized to the internal clock. When after setting the counter the timer is
enabled (by writing to the enable bit in software), the counter starts counting up or down from its
set value synchronously with the generated clock.
The direction in which the counter counts is determined by the input level of the up/down signal
(see Table 10.5.3). An interrupt can be generated when the counter overflows or underflows.
To stop the counter, write to the enable bit in software to disable counting or fix the externally
sourced clock signal level high or low.
Note: TIN9 and TIN11 cannot be used as the clock source.
Table 10.5.3 Count Direction during Up/Down Event Count Mode
TIN8
(TIN10)
TIN9
(TIN11)
Input
Low level
Up-count
Count Direction
High level
Down-count
Figure 10.5.9 Up/Down Count Operation
INPUT/OUTPUT TIMERS
10.5 TID (Input Related 16-bit Timers)
TIN8
(TIN10)
Counter
value
8000
8001
8002
8001
8000
TIN9
(TIN11)
Up-count
Down-count
7FFF
7FFF
Содержание 32172
Страница 20: ... This is a blank page 16 ...
Страница 21: ...1 1 Overview 1 2 Block Diagram 1 3 Pin Functions 1 4 Pin Layout CHAPTER 1 CHAPTER 1 OVERVIEW ...
Страница 44: ...1 1 24 Rev 1 0 This is a blank page Overview 1 4 Pin Layout ...
Страница 58: ...2 2 14 Rev 1 0 This is a blank page CPU 2 6 Data Formats ...
Страница 122: ...4 4 26 Rev 1 0 This is a blank page EIT 4 13 Precautions on EIT ...
Страница 200: ...7 7 6 Rev 1 0 This is a blank page RESET 7 4 Precautions to Be Taken Immediately after Reset ...
Страница 240: ...8 8 40 Rev 1 0 This is a blank page INPUT OUTPUT PORTS AND PIN FUNCTIONS 8 5 Precautions on Input Output Ports ...
Страница 298: ...9 9 58 Rev 1 0 This is a blank page DMAC 9 4 Precautions on Using DMAC ...
Страница 416: ...10 10 118 Rev 1 0 This is a blank page INPUT OUTPUT TIMERS 10 6 TOM Output Related 16 bit Timers ...
Страница 658: ...14 14 16 Rev 1 0 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 718: ...16 16 16 Rev 1 0 This is a blank page D A CONVERTERS 16 3 Functional Description of the D A Converters ...
Страница 766: ...18 18 22 Rev 1 0 WAIT CONTROLLER 18 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 776: ...19 19 10 Rev 1 0 RAM BACKUP MODE 19 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 777: ...CHAPTER 20 CHAPTER 20 OSCILLATION CIRCUIT 20 1 Oscillator Circuit 20 2 Clock Generator Circuit ...
Страница 782: ...20 20 6 Rev 1 0 OSCILLATION CIRCUIT 20 2 Clock Generator Circuit This is a blank page ...
Страница 856: ...23 23 26 Rev 1 0 This is a blank page ELECTRICAL CHARACTERISTICS 23 6 AC Characteristics ...
Страница 857: ...24 1 A D Conversion Characteristics CHAPTER 24 CHAPTER 24 STANDARD CHARACTERISTICS ...
Страница 859: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 861: ...Appendix 2 1 M32R E Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 865: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...