NEC V850ES/KE1+ User Manual page 393

32-bit single-chip microcontrollers
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(5) Full-scale error
This shows the difference between the actual measurement value of the analog input voltage and the
theoretical value (full scale − 3/2 LSB) when the digital output changes from 1......110 to 1......111.
(6) Differential linearity error
While the ideal width of code output is 1 LSB, this indicates the difference between the actual measurement
value and the ideal value. This indicates the basic characteristics of the A/D conversion when the voltage
<R>
applied to the analog input pins of the same channel is consistently increased bit by bit from AV
When the input voltage is increased or decreased, or when two or more channels are used, refer to 13.7 (2)
Overall error.
CHAPTER 13 A/D CONVERTER
Figure 13-15. Full-Scale Error
Full-scale error
111
100
011
010
000
0
AV
–3
AV
REF0
REF0
Analog input (LSB)
Figure 13-16. Differential Linearity Error
1 ...... 1
Ideal 1 LSB width
Differential
linearity error
0 ...... 0
0
Analog input
User's Manual U16896EJ2V0UD
–2
AV
–1
AV
REF0
REF0
AV
REF0
to AV
.
SS
REF0
393

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