ATTINY44A-MU Atmel, ATTINY44A-MU Datasheet - Page 67

• 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

10.3.4
10.3.5
10.3.6
10.3.7
8183C–AVR–03/11
PINA – Port A Input Pins
PORTB – Port B Data Register
DDRB – Port B Data Direction Register
PINB – Port B Input Pins
Bit
0x19 (0x39)
Read/Write
Initial Value
Bit
0x18 (0x38)
Read/Write
Initial Value
Bit
0x17 (0x37)
Read/Write
Initial Value
Bit
0x16 (0x36)
Read/Write
Initial Value
PINA7
R/W
N/A
R
R
R
7
7
–
0
7
–
0
7
–
0
PINA6
R/W
N/A
R
R
R
6
6
–
0
6
–
0
6
–
0
PINA5
R/W
N/A
R
R
R
5
–
0
5
–
0
5
–
0
5
PINA4
R/W
N/A
R
R
R
4
–
0
4
–
0
4
–
0
4
PORTB3
PINB3
PINA3
DDB3
R/W
R/W
R/W
R/W
N/A
N/A
3
0
3
0
3
3
ATtiny24A/44A/84A
PORTB2
PINB2
PINA2
DDB2
R/W
R/W
R/W
R/W
N/A
N/A
2
2
0
2
0
2
PORTB1
PINB1
PINA1
DDB1
R/W
R/W
R/W
R/W
N/A
N/A
1
1
0
1
0
1
PORTB0
PINB0
PINA0
DDB0
R/W
R/W
R/W
R/W
N/A
N/A
0
0
0
0
0
0
PORTB
DDRB
PINB
PINA
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