h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 523
h8s-2649
Manufacturer Part Number
h8s-2649
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2649.pdf
(766 pages)
- Current page: 523 of 766
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15.4.4
A/D conversion can be externally triggered. When bits TRGS0 and TRGS1 in ADCR are set to
11, an external trigger is input on the ADTRG pin. At the falling edge of the ADTRG pin, the
ADST bit in ADCSR is set to 1, and the A/D conversion starts. Other operations are the same as
when the ADST bit has been set to 1 by software in both single and scan modes. Figure 15.3
shows the timing.
15.5
When A/D conversion is completed, the A/D converter generates an A/D conversion end interrupt
(ADI). The ADI interrupt request is enabled when the ADIE bit is set to 1 while the ADF bit in
ADCSR is set to 1 after A/D conversion is completed. The DTC can be activated by an ADI
interrupt. Having the converted data read by the DTC in response to an ADI interrupt enables
continuous conversion without imposing a load on software.
Table 15.5 A/D Converter Interrupt Source
Name
ADI
φ
ADTRG
Internal trigger signal
ADST
External Trigger Input Timing
Interrupt Source
Interrupt Source
A/D conversion completed
Figure 15.3 External Trigger Input Timing
Interrupt Source Flag
ADF
Rev. 2.00 Dec. 05, 2005 Page 485 of 724
A/D conversion
Section 15 A/D Converter
DTC Activation
Possible
REJ09B0200-0200
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