ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 242

• Manufacturer Part Number: ATMEGA169
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

242
ATmega169/V
Table 105. Boundary-scan Signals for the ADC
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
Direction
as Seen
from the
ADC
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Description
Comparator Output
Clock signal to
differential amplifier
implemented as
Switch-cap filters
Enable path from
differential amplifier to
the comparator
Enable Band-gap
reference as negative
input to comparator
Power-on signal to the
ADC
Power-on signal to the
differential amplifier
Bit 9 of digital value to
DAC
Bit 8 of digital value to
DAC
Bit 7 of digital value to
DAC
Bit 6 of digital value to
DAC
Bit 5 of digital value to
DAC
Bit 4 of digital value to
DAC
Bit 3 of digital value to
DAC
Bit 2 of digital value to
DAC
Bit 1 of digital value to
DAC
Bit 0 of digital value to
DAC
Connect ADC
channels 0 - 3 to by-
pass path around
differential amplifier
Ground the negative
input to comparator
when true
(1)
Recommen-
ded Input
when not
in Use
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
Output Values when
Recommended Inputs
are Used, and CPU is
not Using the ADC
2514P–AVR–07/06
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0