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)
Summary of Contents for M32170F3VFP
Page 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Page 56: ...2 2 14 Ver 0 10 This is a blank page ...
Page 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Page 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Page 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Page 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Page 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Page 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Page 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Page 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...