CT-161-CD Fujitsu Semiconductor America Inc, CT-161-CD Datasheet - Page 81
CT-161-CD
Manufacturer Part Number
CT-161-CD
Description
KIT 16LX FOR MB90F387
Manufacturer
Fujitsu Semiconductor America Inc
Series
F²MC-16LXr
Type
MCUr
Specifications of CT-161-CD
Contents
Board, Cable, CD
For Use With/related Products
MB90F387S
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
865-1103
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CT-161-CD
Manufacturer:
Fujitsu Semiconductor America
Quantity:
135
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understandable form.
Figure 7-2 Low accurate digital conversion shows an example of analog and digital
signals. The blue line indicates an analog signal, and the black line indicates a digital signal.
The digital signal in this figure is a low accurate A/D conversion result.
7.1.1
A digital value is a value into which an analog value is divided according to a standard
based on a certain rule. The A/D converter is mounted on the microcomputer to
perform this conversion. For this conversion, the important factor is resolution. This
resolution is, like the resolution of photograph, a scale of how small the analog value is
to be resolved and converted to the digital value. For example, a school record that is
evaluated on a scale of one to five can be a poor accurate digital value. In contrast, a
school record that is evaluated on full mark of a 1000-point scale can be a highly
accurate digital value.
The microcomputer mounted on this Starter Kit contains the A/D converter that has
10-bit resolution (8-bit resolution is also available). Having the 10-bit resolution
means that it can resolve an analog value into 2
digital value (with 8-bit resolution, the value is resolved into 2
higher the resolution is, the more highly the A/D conversion can be accurate. The
following shows the 1-bit voltage accuracy (at 5 V) with 10-bit resolution and 8-bit
resolution.
Outline of A/D converter
1-bit voltage accuracy (at 5 V)
10-bit resolution: 5 V/1024 = approximately 0.00488 V
8-bit resolution: 5 V/256 = approximately 0.01953 V
Figure 7-2 Low accurate digital conversion
-
75
-
10
, or 1024, levels to convert it to a
8
, or 256, levels). The
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