h8s-2161b Renesas Electronics Corporation., h8s-2161b Datasheet - Page 650

• Manufacturer Part Number: h8s-2161b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 21 A/D Converter
21.5
The A/D converter generates an A/D conversion end interrupt (ADI) at the end of A/D conversion.
Setting the ADIE bit to 1 enables ADI interrupt requests while the ADF bit in ADCSR is set to 1
after A/D conversion is completed.
21.6
This LSI’s A/D conversion accuracy definitions are given below.
Rev. 3.00 Mar 21, 2006 page 596 of 788
REJ09B0300-0300
Resolution
The number of A/D converter digital output codes
Quantization error
The deviation inherent in the A/D converter, given by 1/2 LSB (see figure 21.5).
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 21.6).
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 21.6).
Nonlinearity error
The error with respect to the ideal A/D conversion characteristics between the zero voltage and
the full-scale voltage. Does not include the offset error, full-scale error, or quantization error
(see figure 21.6).
Absolute accuracy
The deviation between the digital value and the analog input value. Includes the offset error,
full-scale error, quantization error, and nonlinearity error.
Interrupt Sources
A/D Conversion Accuracy Definitions