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Ver.0.10
MULTIJUNCTION TIMERS
10.8 TOD (Output-related 16-bit Timer)
10.8.12 Operation in TOD Delayed Single-shot Output Mode (without Correction Function)
(1) Outline of TOD delayed single-shot output mode
In delayed single-shot output mode, the timer generates a pulse in width of (reload 0 register set
value + 1) only once, with the output delayed by an amount of time equal to (counter set value +
1) and then stops without performing any operation.
When after setting the counter and reload 0 register, the timer is enabled (by writing to the enable
bit in software or by TID1 underflow/overflow signal), it starts counting down from the counter's
set value synchronously with the count clock. The first time the counter underflows, the reload 0
register value is loaded into the counter causing it to continue counting down, and the counter
stops when it underflows next time.
The F/F output waveform in delayed single-shot output mode is inverted (F/F output levels
change from low to high, or vice versa) when the counter underflows first time and next,
generating a single-shot pulse waveform in width of (reload 0 register set value + 1) only once,
with the output delayed by an amount of time equal to (first set value of c 1). Also, an
interrupt can be generated when the counter underflows first time and next.
The valid count values are the (counter set value + 1) and (reload 0 register set value + 1). For
details about count operation, also see Section 10.3.12, "Operation in TOP Delayed Single-shot
Output Mode (With Correction Function)."
(2) Precautions to be observed when using TOD delayed single-shot output mode
The following describes precautions to be observed when using TOD delayed single-shot output
mode.
• If the counter stops due to underflow in the same clock period as the timer is enabled by
external input, the former has priority (so that the counter stops).
• If the counter stops due to underflow in the same clock period as count is enabled by writing to
the enable bit, the latter has priority (so that count is enabled).
• If the timer is enabled by external input in the same clock period as count is disabled by writing
to the enable bit, the latter has priority (so that count is disabled).
• When you read the counter immediately after reloading it pursuant to underflow, the value you
get is temporarily H'FFFF. But this counter value immediately changes to (reload value - 1) at
the next clock edge.
• Because the internal circuit operation is synchronized to the prescaler output, a finite time
equal to a prescaler delay is included before F/F starts operating after the timer is enabled.
Содержание M32170F3VFP
Страница 19: ...CHAPTER 1 CHAPTER 1 OVERVIEW 1 1 Outline of the 32170 1 2 Block Diagram 1 3 Pin Function 1 4 Pin Layout ...
Страница 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Страница 56: ...2 2 14 Ver 0 10 This is a blank page ...
Страница 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Страница 192: ...6 6 58 Ver 0 10 INTERNAL MEMORY 6 9 Precautions to Be Taken When Rewriting Flash Memory This is a blank page ...
Страница 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Страница 498: ...10 10 228 Ver 0 10 MULTIJUNCTION TIMERS 10 9 TOM Output related 16 bit Timer This is a blank page ...
Страница 550: ...11 11 52 Ver 0 10 A D CONVERTERS 11 4 Precautions on Using A D Converters This is a blank page ...
Страница 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Страница 710: ...14 14 16 Ver 0 10 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 746: ...16 16 20 Ver 0 10 WAIT CONTROLLER 16 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 757: ...CHAPTER 18 CHAPTER 18 OSCILLATION CIRCUIT 18 1 Oscillator Circuit 18 2 Clock Generator Circuit ...
Страница 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Страница 798: ...19 19 36 Ver 0 10 JTAG 19 6 Precautions about Board Design when Connecting JTAG This is a blank page ...
Страница 830: ...21 21 24 Ver 0 10 PRELIMINARY PRELIMINARY This is a blank page ELECTRICAL CHARACTERISTICS 21 5 AC Characteristics ...
Страница 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Страница 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 837: ...Appendix 2 1 32170 Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...