ATMEGA2561-16AI Atmel, ATMEGA2561-16AI Datasheet - Page 295
![IC AVR MCU 256K 16MHZ 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA2561-16AI
Manufacturer Part Number
ATMEGA2561-16AI
Description
IC AVR MCU 256K 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA2561-16AI
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
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)
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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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25.8.6
25.8.7
2549M–AVR–09/10
DIDR0 – Digital Input Disable Register 0
DIDR2 – Digital Input Disable Register 2
ger source that is cleared to a trigger source that is set, will generate a positive edge on the
trigger signal. If ADEN in ADCSRA is set, this will start a conversion. Switching to Free Running
mode (ADTS[2:0]=0) will not cause a trigger event, even if the ADC Interrupt Flag is set
Table 25-6.
Note:
• Bit 7:0 – ADC7D:ADC0D: ADC7:0 Digital Input Disable
When this bit is written logic one, the digital input buffer on the corresponding ADC pin is dis-
abled. The corresponding PIN Register bit will always read as zero when this bit is set. When an
analog signal is applied to the ADC7:0 pin and the digital input from this pin is not needed, this
bit should be written logic one to reduce power consumption in the digital input buffer.
• Bit 7:0 – ADC15D:ADC8D: ADC15:8 Digital Input Disable
When this bit is written logic one, the digital input buffer on the corresponding ADC pin is dis-
abled. The corresponding PIN Register bit will always read as zero when this bit is set. When an
analog signal is applied to the ADC15:8 pin and the digital input from this pin is not needed, this
bit should be written logic one to reduce power consumption in the digital input buffer.
Bit
(0x7E)
Read/Write
Initial Value
Bit
(0x7D)
Read/Write
Initial Value
ADTS2
Free running mode cannot be used for differential channels (see chapter
on page
0
0
0
0
1
1
1
1
ADC15D
ADC7D
ADC Auto Trigger Source Selections
R/W
R/W
7
0
7
0
281).
ADC14D
ADC6D
R/W
R/W
ADTS1
6
0
6
0
0
0
1
1
0
0
1
1
ADC13D
ATmega640/1280/1281/2560/2561
ADC5D
R/W
R/W
5
0
5
0
ADC12D
ADC4D
R/W
R/W
ADTS0
4
0
4
0
0
1
0
1
0
1
0
1
ADC11D
ADC3D
R/W
R/W
3
0
3
0
Trigger Source
Free Running mode
Analog Comparator
External Interrupt Request 0
Timer/Counter0 Compare Match A
Timer/Counter0 Overflow
Timer/Counter1 Compare Match B
Timer/Counter1 Overflow
Timer/Counter1 Capture Event
ADC10D
ADC2D
R/W
R/W
2
0
2
0
ADC1D
ADC9D
R/W
R/W
1
0
1
0
“Differential Channels”
ADC0D
ADC8D
R/W
R/W
0
0
0
0
.
DIDR0
DIDR2
295
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