4513_03 Datasheet, PDF (181/210 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCOMPUTER

APPENDIX
3.2 Typical characteristics
3.2.5 A-D converter typical characteristics
30

1LSB WIDTH
+1LSB
Œ
0
ERROR
0
Ž

-30
0
1
-1LSB
1022 1023
Fig. 3.2.1 A-D conversion characteristics data
Figure 3.2.1 shows the A-D accuracy measurement data.
(1) Non-linearity error ......................... This means a deviation from the ideal characteristics between V0 to
V1022 of actual A-D conversion characteristics. In Figure 3.2.1, it is
(–Œ)/1LSB.
(2) Differencial non-linearity error .... This means a deviation from the ideal characteristics between the
input voltages V0 to V1022 necessary to change the output data to
“1.” In Figure 3.2.1, this is /1LSB.
(3) Zero transition error ..................... This means a deviation from the ideal characteristics between the
input voltages 0 to VDD when the output data changes from “0” to “1.”
In Figure 3.2.1, this is the value of Œ.
(4) Full-scale transition error ............. This means a deviation from the ideal characteristics between the
input voltages 0 to VDD when the output data changes from “1022”
to “1023.” In Figure 3.2.1, this is the value of .
(5) Absolute accuracy ........................ This menas a deviation from the ideal characteristics between 0 to
VDD of actual A-D conversion characteristics. In Figure 3.2.1, this is
the value of ERROR in each of Œ, Ž,  and .
For the A-D converter characteristics, refer to the section 3.1 Electrical characteristics.
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4513/4514 Group User’s Manual