R5F61525 RENESAS [Renesas Technology Corp], R5F61525 Datasheet - Page 599

• Manufacturer Part Number: R5F61525
• Description: 32-Bit CISC Microcomputer H8SX Family H8SX/1500 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

15.5
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 when the ADF bit in ADCSR is set to 1 after A/D conversion is
completed enables ADI interrupt requests. The DMA controller (DMAC) can be activated by an
ADI interrupt. Having the converted data read by the DMAC in response to an ADI interrupt
enables continuous conversion to be achieved without imposing a load on software.
Table 15.5 A/D Converter Interrupt Source
15.6
This LSI's A/D conversion accuracy definitions are given below.
• Resolution
• Quantization error
• Offset error
• Full-scale error
• Nonlinearity error
• Absolute accuracy
Unit
0
1
The number of A/D converter digital output codes.
The deviation inherent in the A/D converter, given by 1/2 LSB (see figure 15.7).
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 15.8).
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 15.8).
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
(see figure 15.8).
The deviation between the digital value and the analog input value. Includes the offset error,
full-scale error, quantization error, and nonlinearity error.
Abbr.
ADI0
ADI1
Interrupt Source
A/D Conversion Accuracy Definitions
Interrupt Source
A/D_0 conversion end
A/D_1 conversion end
Interrupt Flag
ADF
ADF
Rev. 3.00 Mar. 14, 2006 Page 561 of 804
Section 15 A/D Converter
DMAC Activation
Possible
Possible
REJ09B0104-0300