ATMEGA169P Datasheet, PDF (268/390 Pages) ATMEL Corporation – Microcontroller with 16K Bytes In-System Programmable Flash

Table 24-5.
Signal
Name
COMP
ACLK
ACTEN
ADCBGEN
ADCEN
AMPEN
DAC_9
DAC_8
DAC_7
DAC_6
DAC_5
DAC_4
DAC_3
DAC_2
DAC_1
DAC_0
EXTCH
GNDEN
Boundary-scan Signals for the ADC⁽¹⁾
Direction
as Seen
from the
ADC
Description
Recommen-
ded Input
when not
in Use
Output
Comparator Output
0
Clock signal to
Input
differential amplifier
implemented as Switch-
0
cap filters
Enable path from
Input
differential amplifier to
0
the comparator
Enable Band-gap
Input
reference as negative
0
input to comparator
Input
Power-on signal to the
ADC
0
Input
Power-on signal to the
differential amplifier
0
Input
Bit 9 of digital value to
DAC
1
Input
Bit 8 of digital value to
DAC
0
Input
Bit 7 of digital value to
DAC
0
Input
Bit 6 of digital value to
DAC
0
Input
Bit 5 of digital value to
DAC
0
Input
Bit 4 of digital value to
DAC
0
Input
Bit 3 of digital value to
DAC
0
Input
Bit 2 of digital value to
DAC
0
Input
Bit 1 of digital value to
DAC
0
Input
Bit 0 of digital value to
DAC
0
Connect ADC channels 0
Input
- 3 to by-pass path
around differential
1
amplifier
Ground the negative
Input
input to comparator when
0
true
Output Values when
Recommended Inputs
are Used, and CPU is
not Using the ADC
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
268 ATmega169P
8018A–AVR–03/06