HD64F3039F18 Datasheet, PDF (456/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 13 A/D Converter
AN0 to
AN7
10 kΩ
To A/D
converter
20 pF
Note: Values are reference values.
Figure 13.8 Analog Input Pin Equivalent Circuit
A/D Conversion Precision Definitions
H8/3039 Group A/D conversion precision definitions are given below.
• Resolution
The number of A/D converter digital output codes
• Offset error
The deviation of the analog input voltage value from the ideal A/D conversion characteristic
when the digital output changes from the minimum voltage value B'0000000000 (H'000) to
B'0000000001 (H'001) (see figure 13.10).
• Full-scale error
The deviation of the analog input voltage value from the ideal A/D conversion characteristic
when the digital output changes from B'1111111110 (H'3FE) to B'1111111111 (H'3FF) (see
figure 13.10).
• Quantization error
The deviation inherent in the A/D converter, given by 1/2 LSB (see figure 13.9).
• Nonlinearity error
The error with respect to the ideal A/D conversion characteristic between the zero voltage and
the full-scale voltage. Does not include the offset error, full-scale error, or quantization error.
• Absolute precision
The deviation between the digital value and the analog input value. Includes the offset error,
full-scale error, quantization error, and nonlinearity error.
Rev.3.00 Mar. 26, 2007 Page 432 of 682
REJ09B0353-0300