ATtiny461A Atmel Corporation, ATtiny461A Datasheet - Page 160

• Manufacturer Part Number: ATtiny461A
• Manufacturer: Atmel Corporation

Specifications of ATtiny461A

• Flash (kbytes): 4 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.25
• Eeprom (bytes): 256
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

15.13.5
15.13.6
160
ATtiny261A/461A/861A
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: ADC[6:0] 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 ADC[6:0] 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: ADC[10:7] 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 ADC[10:7] 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
ADC10D
ADC6D
R/W
R/W
7
0
7
0
ADC5D
ADC9D
ADTS1
R/W
R/W
6
0
6
0
0
0
1
1
0
0
1
1
ADC4D
ADC8D
R/W
R/W
5
0
5
0
ADC3D
ADC7D
R/W
R/W
ADTS0
4
0
4
0
0
1
0
1
0
1
0
1
AREFD
R/W
3
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
ADC2D
R/W
R
2
0
2
–
0
ADC1D
R/W
R
1
0
1
–
0
ADC0D
R/W
0
0
R
0
–
0
8197C–AVR–05/11
.
DIDR0
DIDR1