A000046 Arduino, A000046 Datasheet - Page 249

• Manufacturer Part Number: A000046
• Description: MCU, MPU & DSP Development Tools Uno
• Manufacturer: Arduino
• Series: -r
• Type: MCUr

Specifications of A000046

• Processor To Be Evaluated: ATmega328
• Interface Type: USB, I2C, SPI
• Dimensions: 2.7 in x 2.1 in
• Operating Supply Voltage: 5 V
• Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ATmega328

22.3.3
8161D–AVR–10/09
DIDR1 – Digital Input Disable Register 1
• Bit 7..2 – Res: Reserved Bits
These bits are unused bits in the ATmega48PA/88PA/168PA/328P, and will always read as
zero.
• Bit 1, 0 – AIN1D, AIN0D: AIN1, AIN0 Digital Input Disable
When this bit is written logic one, the digital input buffer on the AIN1/0 pin is disabled. The corre-
sponding PIN Register bit will always read as zero when this bit is set. When an analog signal is
applied to the AIN1/0 pin and the digital input from this pin is not needed, this bit should be writ-
ten logic one to reduce power consumption in the digital input buffer.
Bit
(0x7F)
Read/Write
Initial Value
R
7
–
0
R
6
–
0
ATmega48PA/88PA/168PA/328P
R
5
–
0
R
4
–
0
R
3
–
0
2
–
R
0
AIN1D
R/W
1
0
AIN0D
R/W
0
0
DIDR1
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