ATTINY44-20SSU Atmel, ATTINY44-20SSU Datasheet - Page 205

• 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

21.10 Internal Oscillator Speed
8006K–AVR–10/10
Figure 21-38. Watchdog Oscillator Frequency vs. V
Figure 21-39. Watchdog Oscillator Frequency vs. Temperature
110
109
108
107
106
105
104
103
102
101
100
110
109
108
107
106
105
104
103
102
101
100
99
1.5
-60
-40
2
WATCHDOG OSCILLATOR FREQUENCY vs. OPERATING VOLTAGE
WATCHDOG OSCILLATOR FREQUENCY vs. TEMPERATURE
2.5
-20
3
0
Temperature
V
CC
3.5
20
(V)
CC
4
40
4.5
60
ATtiny24/44/84
5
80
1.8 V
2.7 V
3.3 V
4.0 V
5.5 V
5.5
100
-40 °C
25 °C
85 °C
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