11
11-2
Ver.0.10
A-D CONVERTERS
11.1 Outline of A-D Converters
11.1 Outline of A-D Converter
The 32170 contains two 10-bit A-D converters of a successive approximation type (A-D0 and A-D1
converters). These converters have 32 analog input pins (channels) AD0IN0 to AD0IN15 and
AD1IN0 to AD1IN 15. The A-D conversion results can be read out in either 8 bits or 10 bits.
For A-D conversion, there are following conversion modes and operation modes:
(1) Conversion mode
• A-D conversion mode: Ordinary mode in which analog input voltages are converted into digital
quantities.
• Comparator mode (Note): A mode in which analog input voltage is compared with a preset
comparison voltage to only find the relative magnitude of two quantities. (Single mode only)
(2) Operation mode
• Single mode: Analog input voltage in one channel is A-D converted once or comparated(note)
with a given quantity.
• Scan mode: Analog input voltages in multiple selected channels (4, 8, or 16 channels) are
sequentially A-D converted.
(3) Types of scan modes
• Single-shot scan mode: Scan operation is performed for one machine cycle.
• Continuous scan mode: Scan operation is performed repeatedly until stopped.
(4) Special operation mode
• Forcible single mode execution during scan mode: Conversion is forcibly executed in single
mode during scan operation.
• Scan mode start after single mode execution: Scan operation is started subsequently after
executing conversion in single mode.
• Conversion restart: A-D conversion being executed in single or scan mode is restarted.
The A-D conversion and comparate rates can be selected between normal and double rate. An A-
D conversion interrupt request or a DMA transfer request (for the A-D0 converter only) can be
generated at completion of A-D conversion, comparate operation, single-shot scan operation, or
one cycle of continuous scan operation.
Note: To discriminate between the comparison operation performed internally by the successive
approximation-type A-D converter and the operation in comparator mode performed using the A-D
converter as a comparator, the comparison operation in comparator mode in this manual is referred to
as "comparate."
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 ...