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MB90560 series
CHAPTER 16 8/10-BIT A/D CONVERTER
449
I
Operation in stop conversion mode
In stop conversion mode, the analog inputs from the channel specified by the ANS bits to the
channel specified by the ANE bits are sequentially converted with a pause after the conversion
of each channel. When the end channel specified by the ANE bits has been processed, A/D
conversion, with pauses, starts again with the channel specified by the ANS bits. If the start and
end channels are the same (ANS = ANE), the conversion of the channel specified by the ANS
bits is repeated. To reactivate conversion during a pause, generate the activation cause
specified by the STS1 and STS0 bits.
Figure 16.6-3 shows the settings required for operation in stop conversion mode.
Figure 16.6-3 Settings for stop conversion mode
<Reference>
The following are sample conversion sequences in stop conversion mode:
ANS = 000B
B
, ANE = 011
B
:
AN0
→
Pause
→
AN1
→
Pause
→
AN2
→
Pause
→
AN0
→
Repeat
ANS = 110
B
, ANE = 001
B
:
AN6
→
Pause
→
AN7
→
Pause
→
AN0
→
Pause
→
AN1
→
AN6
→
Repeat
ANS = 011
B
, ANE = 011
B
:
AN3
→
Pause
→
AN3
→
Pause
→
Repeat
ADCS
BUSY INT
INTE PAUS STS1 STS0 STRT
MD1 MD0 ANS2 ANS1 ANS0 ANE2
ANE0
ANE1
S10
ST1
ST0
CT1
CT0
-
ADCR
ADER
Bit15 Bit14
Bit13 Bit12
Bit11 Bit10 Bit9 Bit8 Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
Holds the conversion data.
: Used
: Set to 1 the bit corresponding to the pin used.
1 : Set 1.
0 : Set 0.
RESV