ATMEga64L ATMEL Corporation, ATMEga64L Datasheet - Page 266

• Manufacturer Part Number: ATMEga64L
• Description: 8-bit AVR Microcontroller with 64K Bytes In-System Programmable Flash
• Manufacturer: ATMEL Corporation

266
ATmega64(L)
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
G10
G20
Direction
as Seen
from the
ADC
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Description
Comparator Output
Clock signal to gain
stages implemented
as Switch-cap filters
Enable path from
gain stages to the
Comparator
Enable Band-gap
reference as
negative input to
Comparator
Power-on signal to
the ADC
Power-on signal to
the gain stages
Bit nine of digital
value to DAC
Bit eight of digital
value to DAC
Bit seven of digital
value to DAC
Bit six of digital
value to DAC
Bit five of digital
value to DAC
Bit four of digital
value to DAC
Bit three of digital
value to DAC
Bit two 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
bypass path around
gain stages
Enable 10x gain
Enable 20x gain
Recommended
Input when not
(1)
in Use
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
Recommended Inputs
are Used, and CPU is
Output Values when
not Using the ADC
2490G–AVR–03/04
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0