ATMEGA128-16AI Atmel, ATMEGA128-16AI Datasheet - Page 262

• Manufacturer Part Number: ATMEGA128-16AI
• Description: IC AVR MCU 128K 16MHZ 64-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA128-16AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• For Use With: ATSTK501 - ADAPTER KIT FOR 64PIN AVR MCU
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Q1167170A

262
ATmega128
Table 104. 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
GNDEN
HOLD
IREFEN
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
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 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
gain stages
Enable 10x gain
Enable 20x gain
Ground the negative input
to comparator when true
Sample & Hold signal.
Sample analog signal
when low. Hold signal
when high. If gain stages
are used, this signal must
go active when ACLK is
high.
Enables Band-gap
reference as AREF signal
to DAC
Recommended
Input
when not
in Use
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
Output Values when
Recommended Inputs
are Used, and CPU is
not Using the ADC
2467V–AVR–02/11
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0