HD64F3048VTF8 Datasheet, PDF (586/903 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip

Section 15 A/D Converter
AN₀ to AN₇
10 kΩ
To A/D converter
20 pF
Note: Numeric values are approximate.
Figure 15.8 Analog Input Pin Equivalent Circuit
Table 15.5 Analog Input Pin Ratings
Item
Min
Max
Unit
Analog input capacitance
—
20
pF
Allowable signal-source impedance φ ≤ 13 MHz
—
10
kΩ
φ > 13 MHz
—
5
kΩ
6. A/D Conversion Accuracy Definitions: A/D conversion accuracy in the H8/3048B Group is
defined as follows:
• Resolution
Digital output code length of A/D converter
• Offset error
Deviation from ideal A/D conversion characteristic of analog input voltage required to
raise digital output from minimum voltage value B'0000000000 to B'0000000001 (figure
15.10)
• Full-scale error
Deviation from ideal A/D conversion characteristic of analog input voltage required to
raise digital output from B'1111111110 to B'1111111111 (figure 15.10)
• Quantization error
Intrinsic error of the A/D converter; 1/2 LSB (figure 15.9)
• Nonlinearity error
Deviation from ideal A/D conversion characteristic in range from zero volts to full scale,
exclusive of offset error, full-scale error, and quantization error.
• Absolute accuracy
Deviation of digital value from analog input value, including offset error, full-scale error,
quantization error, and nonlinearity error.
Rev. 3.00 Sep 27, 2006 page 558 of 872
REJ09B0325-0300