ATMEGA2561V-8MI Atmel, ATMEGA2561V-8MI Datasheet - Page 272
ATMEGA2561V-8MI
Manufacturer Part Number
ATMEGA2561V-8MI
Description
IC AVR MCU 256K 8MHZ 64-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA2561V-8MI
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
256KB (128K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-MLF®, 64-QFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA2561V-8MI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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24.2
24.2.1
24.2.2
2549M–AVR–09/10
Register Description
ADCSRB – ADC Control and Status Register B
ACSR – Analog Comparator Control and Status Register
Table 24-1.
• Bit 6 – ACME: Analog Comparator Multiplexer Enable
When this bit is written logic one and the ADC is switched off (ADEN in ADCSRA is zero), the
ADC multiplexer selects the negative input to the Analog Comparator. When this bit is written
logic zero, AIN1 is applied to the negative input of the Analog Comparator. For a detailed
description of this bit, see
• Bit 7 – ACD: Analog Comparator Disable
When this bit is written logic one, the power to the Analog Comparator is switched off. This bit
can be set at any time to turn off the Analog Comparator. This will reduce power consumption in
Active and Idle mode. When changing the ACD bit, the Analog Comparator Interrupt must be
disabled by clearing the ACIE bit in ACSR. Otherwise an interrupt can occur when the bit is
changed.
Bit
(0x7B)
Read/Write
Initial Value
Bit
0x30 (0x50)
Read/Write
Initial Value
ACME
1
1
1
1
1
1
1
1
1
1
1
1
Analog Comparator Mulitiplexed Input
ADEN
ACD
R/W
R
7
0
7
–
0
0
0
0
0
0
0
0
0
0
0
0
0
ACBG
ACME
R/W
R/W
6
0
6
0
“Analog Comparator Multiplexed Input” on page
MUX5
0
0
0
0
1
1
1
1
1
1
1
1
ACO
N/A
R
ATmega640/1280/1281/2560/2561
5
R
5
–
0
MUX2:0
R/W
ACI
100
101
110
111
000
001
010
011
100
101
110
111
4
0
R
4
–
0
ACIE
MUX5
R/W
R/W
3
0
3
0
ADC4
ADC5
ADC6
ADC7
ADC8
ADC9
ADC10
ADC11
ADC12
ADC13
ADC14
ADC15
ADTS2
ACIC
Analog Comparator Negative Input
R/W
R/W
2
0
2
0
ACIS1
ADTS1
R/W
R/W
1
0
1
0
ACIS0
ADTS0
R/W
R/W
0
0
0
0
271.
ADCSRB
ACSR
272
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