ATmega169P datasheet(268/393 Pages) ATMEL

номер детали	ATmega169P

подробное описание детали	8-bit Microcontroller with 16K Bytes In-System Programmable Flash

PDF	393 Pages

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производитель	ATMEL [ATMEL Corporation]

домашняя страница	http://www.atmel.com

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268 / 393 page

268

8018N–AVR–08/09

ATmega169P

Table 25-3.

Boundary-scan Signals for the ADC(1)

Signal

Name

Direction

as Seen

from the

ADC

Description

Recommen-

ded Input

when not

in Use

Output Values when

Recommended Inputs

are Used, and CPU is

not Using the ADC

COMP

Output

Comparator Output

ACLK

Input

Clock signal to

differential amplifier

implemented as Switch-

cap filters

ACTEN

Input

Enable path from

differential amplifier to

the comparator

ADCBGEN

Input

Enable Band-gap

reference as negative

input to comparator

ADCEN

Input

Power-on signal to the

ADC

AMPEN

Input

Power-on signal to the

differential amplifier

DAC_9

Input

Bit 9 of digital value to

DAC

DAC_8

Input

Bit 8 of digital value to

DAC

DAC_7

Input

Bit 7 of digital value to

DAC

DAC_6

Input

Bit 6 of digital value to

DAC

DAC_5

Input

Bit 5 of digital value to

DAC

DAC_4

Input

Bit 4 of digital value to

DAC

DAC_3

Input

Bit 3 of digital value to

DAC

DAC_2

Input

Bit 2 of digital value to

DAC

DAC_1

Input

Bit 1 of digital value to

DAC

DAC_0

Input

Bit 0 of digital value to

DAC

EXTCH

Input

Connect ADC channels 0

- 3 to by-pass path

around differential

amplifier

GNDEN

Input

Ground the negative

input to comparator when

true

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