ATTINY461-20PU Atmel, ATTINY461-20PU Datasheet - Page 162

• Manufacturer Part Number: ATTINY461-20PU
• Description: Microcontrollers (MCU) 4kB Flash 0.256kB EEPROM 16 I/O Pins
• Manufacturer: Atmel

Specifications of ATTINY461-20PU

• Processor Series: ATTINY4x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: 2-Wire/SPI/USI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 2
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 11-ch x 10-bit
• Program Memory Type: Flash
• Program Memory Size: 4 KB
• Package / Case: PDIP-20
• Package: 20PDIP
• Device Core: AVR
• Family Name: ATtiny
• Maximum Speed: 20 MHz
• Ram Size: 256 Byte
• Operating Temperature: -40 to 85 °C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15.13.5
15.13.6
162
ATtiny261/461/861
DIDR0 – Digital Input Disable Register 0
DIDR1 – Digital Input Disable Register 1
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
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
1
1
5
ADC4D
R/W
0
ADC8D
R/W
5
0
4
ADC3D
R/W
0
ADC7D
R/W
ADTS0
4
0
1
0
1
3
AREFD
R/W
0
R
3
0
-
Trigger Source
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
0
R/W
R
0
0
2588E–AVR–08/10
DIDR0
DIDR1