ATTINY44-20SSU Atmel, ATTINY44-20SSU Datasheet - Page 61

• Manufacturer Part Number: ATTINY44-20SSU
• Description: IC MCU AVR 4K FLASH 20MHZ 14SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY44-20SSU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Cpu Family: ATtiny
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 20MHz
• Interface Type: SPI/USI
• Total Internal Ram Size: 256Byte
• # I/os (max): 12
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 8-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 14
• Package Type: SOIC
• For Use With: ATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.2.1
8006K–AVR–10/10
Alternate Functions of Port A
The Port A pins with alternate function are shown in
Table 10-3.
• Port A, Bit 0 – ADC0/AREF/PCINT0
• ADC0: Analog to Digital Converter, Channel 0
• AREF: External Analog Reference for ADC. Pullup and output driver are disabled on PA0
• PCINT0: Pin Change Interrupt source 0. The PA0 pin can serve as an external interrupt
when the pin is used as an external reference or Internal Voltage Reference with external
capacitor at the AREF pin by setting (one) the bit REFS0 in the ADC Multiplexer Selection
Register (ADMUX).
source for pin change interrupt 0.
Port Pin
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
Port A Pins Alternate Functions
Alternate Function
ADC0:
AREF:
PCINT0: Pin Change Interrupt 0, Source 0
ADC1:
AIN0:
PCINT1:Pin Change Interrupt 0, Source 1
ADC2:
AIN1:
PCINT2: Pin Change Interrupt 0, Source 2
ADC3:
T0:
PCINT3: Pin Change Interrupt 0, Source 3
ADC4:
USCK: USI Clock (Three Wire Mode)
SCL :
T1:
PCINT4: Pin Change Interrupt 0, Source 4
ADC5:
DO:
MISO:
OC1B: Timer/Counter1 Compare Match B Output
PCINT5: Pin Change Interrupt 0, Source 5
ADC6:
DI:
SDA:
MOSI:
OC1A: Timer/Counter1 Compare Match A Output
PCINT6: Pin Change Interrupt 0, Source 6
ADC7:
OC0B: Timer/Counter0 Compare Match B Output
ICP1:
PCINT7: Pin Change Interrupt 0, Source 7
ADC Input Channel 0
External Analog Reference
ADC Input Channel 1
Analog Comparator, Positive Input
ADC Input Channel 2
Analog Comparator, Negative Input
ADC Input Channel 3
Timer/Counter0 Clock Source.
ADC Input Channel 4
USI Clock (Two Wire Mode)
Timer/Counter1 Clock Source
ADC Input Channel 5
USI Data Output (Three Wire Mode)
SPI Master Data Input / Slave Data Output
ADC Input Channel 6
USI Data Input (Three Wire Mode)
USI Data Input (Two Wire Mode)
SPI Master Data Output / Slave Data Input
ADC Input Channel 7
Timer/Counter1 Input Capture Pin
.
Table
10-3.
ATtiny24/44/84
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