ATTINY44A-MU Atmel, ATTINY44A-MU Datasheet - Page 60

• Manufacturer Part Number: ATTINY44A-MU
• Description: IC MCU AVR 4K FLASH 20MHZ 20QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY44A-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, 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): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-MLF®, QFN
• Processor Series: ATTINY4x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI/USI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 20-ch x 10-bit
• Data Rom Size: 256 B
• A/d Bit Size: 10 bit
• A/d Channels Available: 20
• Height: 0.74 mm
• Length: 4 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V
• Width: 4 mm
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.2.1
60
ATtiny24A/44A/84A
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
External Analog Reference
ADC Input Channel 0
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.
8183C–AVR–03/11