ATTINY44-20SSUR Atmel, ATTINY44-20SSUR Datasheet - Page 61
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ATTINY44-20SSUR
Manufacturer Part Number
ATTINY44-20SSUR
Description
MCU AVR 4KB FLASH 20MHZ 14SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY24-20MU.pdf
(238 pages)
Specifications of ATTINY44-20SSUR
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
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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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
61
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