11
11-8
Ver.0.10
(2) Scan mode
In scan mode, analog input voltages in multiple selected channels (4, 8, or 16 channels) are
sequentially A-D converted.
There are two types of scan modes: "Single-shot scan mode" in which A-D conversion is
completed by performing one cycle of scan operation, and "Continuous scan mode" in which
scan operation is continued until halted by setting the Scan Mode Register A-D conversion stop
bit to 1.
These types of scan modes are selected using Scan Mode Register 0. The channels to be
scanned are selected using Scan Mode Register 1. The number of channels and the sequence to
be scanned can be selected from three combinations available: 4, 8, or 16 channels. Channels
ADiIN0 to ADiIN3 (i = 0, 1) are used for 4-channel scan. Similarly, channels ADiIN0 to ADiIN7 and
channels ADiIN0 to ADiIN15 are used for 8-channel scan and 16-channel scan, respectively.
An A-D conversion interrupt request or a DMA transfer request (for the A-D0 converter only) can
be generated at completion of one cycle of scan operation.
Figure 11.1.5 Operation of A-D Conversion in Scan Mode (for 4-channel Scan)
Note 1: A-D0 conversion start: Software trigger
→
Started by setting A-D0 conversion start bit to 1
____________
Hardware trigger
→
Started by output event bus 3 or ADTRG signal input
A-D1 conversion start: Software trigger
→
Started by setting A-D1 conversion start bit to 1
____________
Hardware trigger
→
Started by TID1 overflow/underflow or ADTRG signal input
Note 2: DMA transfer request: Can be generated for only the A-D0 converter.
A-D CONVERTERS
11.1 Outline of A-D Converters
ADiIN0
Completed here when
operating in single-shot
scan mode
ADiDT0
10-bit A-Di data register
ADiIN1
ADiIN2
ADiIN3
ADiDT1
ADiDT2
ADiDT3
During continuous scan mode
<4-channel scan>
i=0,1
A-D conversion interrupt request or DMA transfer request (Note 2)
Conversion
starts
(Note 1)
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 ...