11
11-38
A-D Converters
32180 Group User's Manual (Rev.1.0)
Start dummy
Execution cycle
A-D conversion
start trigger
Convert operation
starts
Transferred to the
comparate data register
End dummy
Completed
11.3 Functional Description of A-D Converters
Figure 11.3.5 Conceptual Diagram of A-D Conversion Time during Comparator Mode
Table 11.3.4 Conversion Clock Periods during Comparator Mode
Unit: BCLK
Conversion speed
Start dummy
Execution cycle
End dummy
Slow mode
Normal speed
4
42
1
Double speed
4
24
1
Fast mode
Normal speed
4
18
1
Double speed
4
12
1
(4) A-D conversion time
A total A-D conversion time in various modes are shown in the table below.
Table 11.3.5 A-D Conversion Time (Total Time)
Unit: BCLK
Conversion start method
Conversion speed
Conversion mode (Note 1)
Conversion time
When fast sample-
and-hold enabled
Software and
Normal speed Single mode
299
191
hardware triggers
n-channel single-shot scan/
(298
×
n)+1
(190
×
n)+1
(Note 2)
continuous scan mode
Slow
Comparator mode
47
47
Mode Double speed Single mode
173
101
n-channel single-shot scan/
(172
×
n)+1
(100
×
n)+1
continuous scan mode
Comparator mode
29
29
Normal speed Single mode
131
95
n-channel single-shot scan/
(130
×
n)+1
(94
×
n)+1
continuous scan mode
Fast
Comparator mode
23
23
Mode Double speed Single mode
89
53
n-channel single-shot scan/
(88
×
n)+1
(52
×
n)+1
continuous scan mode
Comparator mode
17
17
Note 1: For single mode and comparator mode, this indicates an A-D conversion or comparate time per channel. For single-
shot and continuous scan modes, this indicates an A-D conversion time per scan loop.
Note 2: This indicates a time from when a register write cycle has finished to when an A-D conversion completion interrupt
request is generated, or a time from when an event bus or other MJT event has occurred to when an A-D conversion
completion interrupt request is generated.
(3) Calculating the conversion time during comparator mode
The following schematically shows the method for calculating the conversion time during comparator mode.
Summary of Contents for M32R/ECU Series
Page 17: ...12 This page is blank for reasons of layout...
Page 712: ...CHAPTER 18 OSCILLATOR CIRCUIT 18 1 Oscillator Circuit 18 2 Clock Generator Circuit...
Page 794: ...CHAPTER 22 TYPICAL CHARACTERISTICS...
Page 796: ...APPENDIX 1 MECHANICAL SPECIFICAITONS Appendix 1 1 Dimensional Outline Drawing...
Page 798: ...APPENDIX 2 INSTRUCTION PROCESSING TIME Appendix 2 1 32180 Instruction Processing Time...
Page 802: ...APPENDIX 3 PROCESSING OF UNUSED PINS Appendix 3 1 Example Processing of Unused Pins...