ATtiny43U Atmel Corporation, ATtiny43U Datasheet - Page 130

• Manufacturer Part Number: ATtiny43U
• Manufacturer: Atmel Corporation

Specifications of ATtiny43U

• Flash (kbytes): 4 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 8 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: 4
• 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): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 0.7 to 5.5
• Operating Voltage (vcc): 0.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

16.13.5
130
ATtiny43U
DIDR0 – Digital Input Disable Register 0
Table 16-6.
• Bits 3:0 – ADC[3:0]D: ADC[3:0] 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[3:0] 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
0x01 (0x21)
Read/Write
Initial Value
ADTS2
1
1
1
ADC Auto Trigger Source Selections (Continued)
R
7
–
0
ADTS1
R
6
–
0
0
1
1
AIN1D
R/W
5
0
AIN0D
R/W
ADTS0
4
0
1
0
1
ADC3D
R/W
3
0
Trigger Source
Timer/Counter1 Compare Match A
Timer/Counter1 Overflow
Timer/Counter1 Compare Match B
ADC2D
R/W
2
0
ADC1D
R/W
1
0
ADC0D
R/W
0
0
8048B–AVR–03/09
DIDR0