ATMEGA128A-ANR Atmel, ATMEGA128A-ANR Datasheet - Page 266

• Manufacturer Part Number: ATMEGA128A-ANR
• Description: IC MCU AVR 128K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA128A-ANR

• 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP
• Core: AVR8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8151H–AVR–02/11
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
G10
G20
GNDEN
Boundary-scan Signals for the ADC
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
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
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
0
0
ATmega128A
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
0
0
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