ATTINY261A-SU Atmel, ATTINY261A-SU Datasheet - Page 159
ATTINY261A-SU
Manufacturer Part Number
ATTINY261A-SU
Description
IC, MCU, 8BIT, 2K FLASH, 20SOIC
Manufacturer
Atmel
Datasheet
1.ATTINY461A-MU.pdf
(292 pages)
Specifications of ATTINY261A-SU
Controller Family/series
ATtiny
No. Of I/o's
16
Eeprom Memory Size
128Byte
Ram Memory Size
128Byte
Cpu Speed
20MHz
No.
RoHS Compliant
Core Size
8bit
Program Memory Size
2KB
Oscillator Type
External, Internal
Rohs Compliant
Yes
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15.13.5
15.13.6
8197B–AVR–01/10
DIDR0 – Digital Input Disable Register 0
DIDR1 – Digital Input Disable Register 1
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 15-6.
• Bits 7:4,2:0 – ADC6D:ADC0D: ADC6:0 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 3 – AREFD: AREF Digital Input Disable
When this bit is written logic one, the digital input buffer on the AREF 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 AREF 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.
• Bits 7:4 – ADC10D:ADC7D: ADC10:7 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 ADC10:7 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
0x01 (0x21)
Read/Write
Initial Value
Bit
0x02 (0x22)
Read/Write
Initial Value
ADTS2
0
0
0
0
1
1
1
1
ADC Auto Trigger Source Selections
7
ADC6D
R/W
0
ADC10D
R/W
7
0
6
ADC5D
R/W
0
ADC9D
ADTS1
R/W
6
0
0
0
1
1
0
0
1
1
5
ADC4D
R/W
0
ADC8D
R/W
5
0
4
ADC3D
R/W
0
ADC7D
R/W
ADTS0
4
0
0
1
0
1
0
1
0
1
3
AREFD
R/W
0
R
3
0
-
Trigger Source
Free Running mode
Analog Comparator
External Interrupt Request 0
Timer/Counter0 Compare Match A
Timer/Counter0 Overflow
Timer/Counter0 Compare Match B
Timer/Counter1 Overflow
Watchdog Interrupt Request
2
ADC2D
R/W
0
R
2
0
1
ADC1D
R/W
0
R
1
0
0
ADC0D
R/W
0
R
0
0
DIDR0
.
DIDR1
159
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