p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 487

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

17.5
The A/D converter generates an A/D conversion end interrupt (ADI) at the end of A/D conversion.
If the ADF bit in ADCSR has been set to 1 after A/D conversion ends and the ADIE bit is set to 1,
an ADI interrupt request is enabled.
The ADI interrupt can be used to activate the on-chip DTC.
Table 17.4 A/D Converter Interrupt Source
17.6
This LSI’s A/D conversion accuracy definitions are given below.
• Resolution
• Quantization error
• Offset error
• Full-scale error
• Nonlinearity error
• Absolute accuracy
Name
ADI
The number of A/D converter digital output codes
The deviation inherent in the A/D converter, given by 1/2 LSB (see figure 17.4).
The deviation of the analog input voltage value from the ideal A/D conversion characteristics
when the digital output changes from the minimum voltage value B'00 0000 0000 (H'000) to
B'00 0000 0001 (H'001) (see figure 17.5).
The deviation of the analog input voltage value from the ideal A/D conversion characteristics
when the digital output changes from B'11 1111 1110 (H'3FE) to B'11 1111 1111 (H'3FF) (see
figure 17.5).
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 17.5).
The deviation between the digital value and the analog input value. Includes the offset error,
full-scale error, quantization error, and nonlinearity error.
Interrupt Source
A/D Conversion Accuracy Definitions
A/D conversion end
Interrupt Source
Interrupt Flag
ADF
Rev. 1.00 Sep. 21, 2006 Page 449 of 658
DTC Activation
Enable
Section 17 A/D Converter
REJ09B0310-0100