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Section 14
A/D Converter
Rev.2.00 Jun. 28, 2007 Page 537 of 666
REJ09B0311-0200
14.4.4 External
Trigger Input Timing
A/D conversion can be externally triggered. When the TRGS1 and TRGS0 bits are set to B'11 in
ADCR, an external trigger is input from the
ADTRG0
pin. A/D conversion starts when the ADST
bit in ADCSR is set to 1 on the falling edge of the
ADTRG0
pin. Other operations, in both single
and scan modes, are the same as when the ADST bit has been set to 1 by software. Figure 14.5
shows the timing.
P
φ
ADTRG0
Internal
trigger signal
ADST
A/D conversion
Figure 14.5 External Trigger Input Timing
14.5 Interrupt
Source
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 data transfer controller (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 to be achieved without imposing a load on software.
Table 14.5 A/D Converter Interrupt Source
Name
Interrupt Source
Interrupt Flag
DTC Activation
ADI0
A/D conversion end
ADF
Possible
Содержание H8SX/1650
Страница 2: ...Rev 2 00 Jun 28 2007 Page ii of xxii...
Страница 106: ...Section 4 Exception Handling Rev 2 00 Jun 28 2007 Page 84 of 666 REJ09B0311 0200...
Страница 142: ...Section 5 Interrupt Controller Rev 2 00 Jun 28 2007 Page 120 of 666 REJ09B0311 0200...
Страница 326: ...Section 8 I O Ports Rev 2 00 Jun 28 2007 Page 304 of 666 REJ09B0311 0200...
Страница 470: ...Section 12 Watchdog Timer WDT Rev 2 00 Jun 28 2007 Page 448 of 666 REJ09B0311 0200...
Страница 546: ...Section 13 Serial Communication Interface SCI Rev 2 00 Jun 28 2007 Page 524 of 666 REJ09B0311 0200...
Страница 566: ...Section 14 A D Converter Rev 2 00 Jun 28 2007 Page 544 of 666 REJ09B0311 0200...
Страница 574: ...Section 16 RAM Rev 2 00 Jun 28 2007 Page 552 of 666 REJ09B0311 0200...
Страница 584: ...Section 17 Clock Pulse Generator Rev 2 00 Jun 28 2007 Page 562 of 666 REJ09B0311 0200...
Страница 638: ...Section 19 List of Registers Rev 2 00 Jun 28 2007 Page 616 of 666 REJ09B0311 0200...
Страница 668: ...Section 20 Electrical Characteristics Rev 2 00 Jun 28 2007 Page 646 of 666 REJ09B0311 0200...
Страница 676: ...Appendix Rev 2 00 Jun 28 2007 Page 654 of 666 REJ09B0311 0200...
Страница 688: ...Rev 2 00 Jun 28 2007 Page 666 of 666 REJ09B0311 0200...
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Страница 692: ...H8SX 1650 Group Hardware Manual...