AT89LP428 datasheet(104/149 Pages) ATMEL

Numer części	AT89LP428

Szczegółowy opis	8-bit Microcontroller with 4K/8K Bytes In-System Programmable Flash

PDF	149 Pages

Scroll/Zoom	100%

Producent	ATMEL [ATMEL Corporation]

Strona internetowa	http://www.atmel.com

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104 / 149 page

104

3654A–MICRO–8/09

AT89LP428/828

Notes:1. CONB (ACSRB.5) must be cleared to 0 before changing RFB [1 - 0].

2. CONA (ACSRA.5) must be cleared to 0 before changing RFA [1 - 0].

Table 18-3.

AREF

– Analog Comparator Reference Control Register

AREF = AFH

Reset Value = 0000 0000B

Not Bit Addressable

CBC1

CBC0

RFB1

RFB0

CAC1

CAC0

RFA1

RFA0

Bit

543

Symbol

Function

CSC

[1 - 0]

Comparator B Clock Select

CBC1

CBC0

Clock Source

System Clock

Timer 0 Overflow

Timer 1 Overflow

Timer 2 Overflow

RFB

[1 - 0]

Comparator B Negative Input Channel Select(1)

CRF1

RFB0

B-channel

AIN2 (P2.6)

Internal VAREF-Δ (~1.2V)

Internal V

AREF (~1.3V)

Internal VAREF+Δ (~1.4V)

CAC

[1 - 0]

Comparator A Clock Select

CAC1

CAC0

Clock Source

System Clock

Timer 0 Overflow

Timer 1 Overflow

Timer 2 Overflow

RFB

[1 - 0]

Comparator A Negative Input Channel Select(2)

RFA1

RFA0

A-channel

AIN1 (P2.5)

Internal V

AREF-

Δ (~1.2V)

Internal V

AREF (~1.3V)

Internal VAREF+Δ (~1.4V)

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