ATMEGA32U4-AUR Atmel, ATMEGA32U4-AUR Datasheet - Page 313
ATMEGA32U4-AUR
Manufacturer Part Number
ATMEGA32U4-AUR
Description
MCU AVR 16K FLASH 16MHZ 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16U4-MU.pdf
(433 pages)
Specifications of ATMEGA32U4-AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
26
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
Quantity
Price
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24.9.5
24.9.6
7766F–AVR–11/10
Digital Input Disable Register 0 – DIDR0
Digital Input Disable Register 2 – DIDR2
Table 24-6.
• Bit 7:4, 1:0 – ADC7D..4D - ADC1D..0D : ADC7:4 - ADC1:0 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..4 / ADC1..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 5:0 – ADC13D..ADC8D: ADC13:8 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 ADC13..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
Read/Write
Initial Value
Bit
Read/Write
Initial Value
ADTS3
1
1
1
ADC7D
ADC Auto Trigger Source Selections (Continued)
R/W
R/W
7
0
7
0
-
ADTS2
ADC6D
0
0
0
R/W
R/W
6
0
6
0
-
ADC13D
ADC5D
R/W
R/W
5
0
5
0
ADTS1
0
1
1
ADC12D
ADC4D
R/W
R/W
4
0
4
0
ADC11D
R/W
R/W
ADTS0
3
0
3
0
-
1
0
1
ADC10D
R/W
R/W
2
0
2
0
-
Trigger Source
Timer/Counter4 Compare Match A
Timer/Counter4 Compare Match B
Timer/Counter4 Compare Match D
ADC1D
ADC9D
R/W
R/W
ATmega16/32U4
1
0
1
0
ADC0D
ADC8D
R/W
R/W
0
0
0
0
DIDR0
DIDR2
313
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