AT89LP6440 datasheet(140/194 Pages) ATMEL

140 / 194 page

140

3706A–MICRO–9/09

AT89LP6440 - Preliminary

Table 20-5.

DADI

– DADC Input Control Register

DADI = DAH

Reset Value = 0000 0000B

Not Bit Addressable

ACON

IREF

TRG1

TRG0

DIFF

ACS2ACS1ACS0

Bit

543

Symbol

Function

ACON

Analog Input Connect. When cleared, the analog inputs are disconnected from the ADC. When set, the analog inputs

selected by ACS2-0 are connected to the ADC. ACON must be zero when changing the input channel multiplexor (ACS2-

0).

IREF

Internal Reference Enable. When set, the DADC uses the internal voltage reference. When cleared the DADC uses

AVDD for its reference.

DIFF

Differential Mode Enable. Set to configure the ADC in differential mode. Clear to configure the ADC in single-ended

mode.

TRG[1-0]

Trigger Select.

TRG1

TRG0

Trigger

Software (GO bit)

Timer 0 Overflow

Timer 1 Overflow

Timer 2 Overflow

ACS [2-0]

DADC Channel Select

DIFF

ACS2

ACS1

ACS0

V+

V-

0000P0.0

AVDD/2

0001P0.1

AVDD/2

0010P0.2

AVDD/2

0011P0.3

AVDD/2

0100P0.4

AVDD/2

0101P0.5

AVDD/2

0110P0.6

AVDD/2

0111P0.7

AVDD/2

1000P0.0

P0.1

1001P0.2

P0.3

1010P0.4

P0.5

1011P0.6

P0.7

1100reserved

1101reserved

1110reserved

1111reserved

AT89LP6440 Datasheet(PDF) 140 Page - ATMEL Corporation

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