Section 19 A/D Converter (ADC)
Rev. 5.00 May 29, 2006 page 540 of 698
REJ09B0146-0500
Channel 0 (AN0)
operating
ADIE
ADST
ADF
Channel 1 (AN1)
operating
Channel 2 (AN2)
operating
Channel 3 (AN3)
operating
ADDRA
ADDRB
ADDRC
ADDRD
Waiting
Waiting
Waiting
Waiting
Waiting
Waiting
A/D conversion starts
Set
*
Set
*
Set
*
Clear
*
Clear
A/D conversion result 1
A/D conversion result 2
Read result
Read result
A/D conversion 1
A/D conversion result 2
Note:
*
Downward arrows (
↓
) indicate instruction execution.
Figure 19.5 Example of A/D Converter Operation (Single Mode, Channel 1 Selected)
19.6.2
Multi Mode (MULTI = 1, SCN = 0)
Multi mode should be selected when performing multi channel A/D conversions on one or more
channels. When the ADST bit in ADCSR is set to 1 by software or external trigger input, A/D
conversion starts on the first channel in the group (AN0 when CH2 = 0). When two or more
channels are selected, after conversion of the first channel ends, conversion of the second channel
(AN1) starts immediately. When A/D conversions end on the selected channels, the ADST bit is
cleared to 0. The conversion results are transferred for storage into the A/D data registers
corresponding to the channels.
When the mode or analog input channel selection must be changed during A/D conversion, to
prevent incorrect operation, first clear the ADST bit to 0 in ADCSR to halt A/D conversion. After
making the necessary changes, set the ADST bit to 1. A/D conversion will start again from the
first channel in the group. The ADST bit can be set at the same time as the mode or channel
selection is changed.
Содержание SH7706 Series
Страница 8: ...Rev 5 00 May 29 2006 page viii of xlviii ...
Страница 160: ...Section 5 Cache Rev 5 00 May 29 2006 page 112 of 698 REJ09B0146 0500 ...
Страница 370: ...Section 11 Watchdog Timer WDT Rev 5 00 May 29 2006 page 322 of 698 REJ09B0146 0500 ...
Страница 532: ...Section 16 Serial Communication Interface with FIFO SCIF Rev 5 00 May 29 2006 page 484 of 698 REJ09B0146 0500 ...
Страница 554: ...Section 17 Pin Function Controller PFC Rev 5 00 May 29 2006 page 506 of 698 REJ09B0146 0500 ...
Страница 576: ...Section 18 I O Ports Rev 5 00 May 29 2006 page 528 of 698 REJ09B0146 0500 ...
Страница 614: ...Section 21 User Debugging Interface H UDI Rev 5 00 May 29 2006 page 566 of 698 REJ09B0146 0500 ...
Страница 746: ...Index Rev 5 00 May 29 2006 page 698 of 698 REJ09B0146 0500 ...
Страница 749: ...SH7706 Group Hardware Manual ...