R0K572030S000BE Renesas Electronics America, R0K572030S000BE Datasheet - Page 1072
R0K572030S000BE
Manufacturer Part Number
R0K572030S000BE
Description
KIT DEV FOR SH7203
Manufacturer
Renesas Electronics America
Series
Renesas Starter Kits (RSK)r
Type
MCUr
Specifications of R0K572030S000BE
Contents
CPU Board, LCD Module, E10A-Lite Emulator, Cable, QuickStart Guide and CD-ROM
Silicon Manufacturer
Renesas
Kit Contents
Board
Silicon Family Name
SH7203
Silicon Core Number
R5S72030W200FP
Tool / Board Applications
General Purpose MCU, MPU, DSP, DSC
Mcu Supported Families
SH7203
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
SH7203
Lead Free Status / Rohs Status
Compliant
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Section 20 A/D Converter (ADC)
20.6
The A/D converter compares an analog value input from an analog input channel with its analog
reference value and converts it to 10-bit digital data. The absolute accuracy of this A/D conversion
is the deviation between the input analog value and the output digital value. It includes the
following errors:
• Offset error
• Full-scale error
• Quantization error
• Nonlinearity error
These four error quantities are explained below with reference to figure 20.7. In the figure, the 10-
bit A/D converter is illustrated as the 3-bit A/D converter for explanation. Offset error is the
deviation between actual and ideal A/D conversion characteristics when the digital output value
changes from the minimum (zero voltage) B'0000000000 (000 in the figure) to B'000000001 (001
in the figure) (figure 20.7, item (1)). Full-scale error is the deviation between actual and ideal A/D
conversion characteristics when the digital output value changes from B'1111111110 (110 in the
figure) to the maximum B'1111111111 (111 in the figure) (figure 20.7, item (2)). Quantization
error is the intrinsic error of the A/D converter and is expressed as 1/2 LSB (figure 20.7, item (3)).
Nonlinearity error is the deviation between actual and ideal A/D conversion characteristics
between zero voltage and full-scale voltage (figure 20.7, item (4)). Note that it does not include
offset, full-scale, or quantization error.
Rev. 3.00 Sep. 28, 2009 Page 1040 of 1650
REJ09B0313-0300
Digital output
[Legend]
FS: Full-scale voltage
111
110
101
100
011
010
001
000
0
1024
Definitions of A/D Conversion Accuracy
1
1024
2
characteristic
Figure 20.7 Definitions of A/D Conversion Accuracy
conversion
(3) Quantization
Ideal A/D
error
1022
1024
1023
1024
Analog input
voltage
FS
Digital output
characteristic
conversion
(1) Offset error
Ideal A/D
Actual A/D
convertion
characteristic
(4) Nonlinearity
(2) Full-scale error
error
Analog input
voltage
FS
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