ATTINY44-20SSU Atmel, ATTINY44-20SSU Datasheet - Page 226

• 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

27. Datasheet Revision History
27.1
27.2
27.3
27.4
27.5
226
Rev K. - 10/10
Rev J. - 08/10
Rev I. - 06/10
Rev H. 10/09
Rev G. 01/08
ATtiny24/44/84
1. Added note for Internal 1.1V Reference in
2. Added tape & reel in
3. Updated last page.
1. Updated
2. Removed text "Not recommended for new design" from cover page.
1. Removed “Preliminary” from cover page.
2. Updated notes in
3. Added clarification before
4. Updated some table notes in
1. Updated document template. Re-arranged some sections.
2. Updated
3. Updated Tables:
4. Updated Register Description:
5. Signature Imprint Reading Instructions updated in
6. Updated Section:
7. Added Table:
8. Updated Figure:
9. Updated
10. Changed ATtiny24/44 device status to “Not Recommended for New Designs. Use:
1. Updated sections:
ATtiny24/44/84,” on page
Oscillator,” on page
–
–
–
–
Table from Firmware” on page
–
–
–
old and Hysteresis”.
ATtiny24A/44A”.
–
“Active Clock Domains and Wake-up Sources in Different Sleep Modes” on page 33
“DC Characteristics” on page 174
“Register Summary” on page 213
“ADMUX – ADC Multiplexer Selection Register” on page 145
Step 1. on page 164
“Analog Comparator Characteristics” on page 179
“Active Supply Current vs. frequency (1 - 20 MHz)” on page 187
“Features” on page 1
Section 6.4 “Clock Output Buffer” on page
“Low-Frequency Crystal Oscillator”
Figure 21-30 on page 201
Table 19-16, “High-voltage Serial Programming Instruction Set for
28.
Section 24. “Ordering Information” on page
171.
Table 6-8, “Capacitance for the Low-Frequency Crystal
Section 20. “Electrical Characteristics” on page
156.
and
Figure 21-33 on page 202
Table 16-4 on page
with the
“Reading Device Signature Imprint
30, changed CLKO to CKOUT.
Table 6-8 on page 28
146.
217.
under “Pin Thresh-
8006K–AVR–10/10
174.