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32186 Datasheet(PDF) 537 Page - Renesas Technology Corp

Part # 32186
Description  MCU
PDF  1032 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

32186 Datasheet(HTML) 537 Page - Renesas Technology Corp

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11
A/D CONVERTER
11-39
32185/32186 Group Hardware Manual
Rev.1.10 REJ09B0235-0110 May 15, 07
11.3 Functional Description of A/D Converter
(2) Calculating the conversion time when sample-and-hold is enabled
The following schematically shows the method for calculating the conversion time when the sample-
and-hold function is enabled.
Start dummy
Execution cycle
A/D conversion
start trigger
Convert operation
starts
End dummy
Completed
Sampling
time
Figure 11.3.4 Conceptual Diagram of A/D Conversion Time when Sample-and-Hold is Enabled
Table 11.3.1 Conversion Clock Periods in A/D Conversion Mode when Sample-and-Hold is Disabled or
Normal Sample-and-Hold is Enabled (Shortest Period)
Unit: BCLK
Conversion speed
Start dummy
Execution cycle
End dummy
Scan to scan dummy
(Note 1)
(Note 2)
2BCLK mode
Slow mode
Normal speed
8
588
2
8
Double speed
8
336
2
8
Fast mode
Normal speed
8
252
2
8
Double speed
8
168
2
8
BCLK mode
Slow mode
Normal speed
4
294
1
4
Double speed
4
168
1
4
Fast mode
Normal speed
4
126
1
4
Double speed
4
84
1
4
Note 1: The same applies to both software and hardware triggers.
Note 2: Only during scan mode operation, execution time per channel is added.
Table 11.3.2 Conversion Clock Periods in A/D Conversion Mode when Fast Sample-and-Hold is Enabled
(Shortest Period)
Unit: BCLK
Conversion speed
Start dummy
Execution cycle
End dummy
Scan to scan dummy
(Note 1)
(Note 2)
2BCLK mode
Slow mode
Normal speed
8
372
2
8
Double speed
8
186
2
8
Fast mode
Normal speed
8
180
2
8
Double speed
8
96
2
8
BCLK mode
Slow mode
Normal speed
4
186
1
4
Double speed
4
96
1
4
Fast mode
Normal speed
4
90
1
4
Double speed
4
48
1
4
Note 1: The same applies to both software and hardware triggers.
Note 2: Only during scan mode operation, execution time per channel is added.



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