10
10-105
Rev.1.0
(2) Updating of TOM reload registers in PWM mode
In PWM output mode, when the timer is idle, the reload 0 and reload 1 registers are updated
simultaneously when data are written to the registers. However, when the timer is operating, the
reload 1 register is updated by updating the reload 0 register. The values obtained by reading the
reload 0 and reload 1 registers are always the data written to the registers.
Figure 10.6.10 PWM Circuit Diagram
When the reload 0 and reload 1 registers need to be rewritten while the timer is operating, rewrite
the reload 1 register first and then the reload 0 register. As a result, the reload 0 and reload 1
registers both are updated synchronously with PWM period.
Normally, this can be accomplished at a time by accessing the 32-bit address space wordwise
beginning with the reload 1 register address. (The reload 1 and then the reload 0 registers are
automatically written to in succession.)
If the reload registers are updated in reverse by updating the reload 0 and then the reload 1
registers, only the reload 0 register is updated. The values obtained by reading the reload 0 and
reload 1 registers are always the data written to the registers, and not the reload values actually
being used.
While rewriting the PWM period, if the PWM period expires before writing to the reload 0 register,
the PWM period is not immediately updated and the updating is reflected in the next period.
INPUT/OUTPUT TIMERS
10.6 TOM (Output Related 16-bit Timers)
Internal bus
TOM0nRL1
Reload 1
Reload 1 WR
Reload 0 WR
Buffer
16-bit counter
Prescaler output
F/F
TO
TOM0nRL0
Reload 0
PWM mode control
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 ...