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  • Manufacturer: ATMEL
  • Newark Part No.: 68T3729
  • Manufacturer Part No ATTINY45-20PU

Product Information

  • CPU Speed: 20MHz
  • Controller Family/Series: ATtiny
  • Core Size: 8bit
  • EEPROM Memory Size: 256Byte
  • Embedded Interface Type: I2C, SPI
  • MCU Case Style: DIP
  • MSL: -
  • No. of I/O's: 6
  • No. of PWM Channels: 6
  • No. of Pins: 8
  • No. of Timers: 2
  • Operating Temperature Max: 85°C
  • Operating Temperature Min: -40°C
  • Oscillator Type: External, Internal
  • Packaging: Each
  • Peripherals: ADC / Comparator / PWM / Timer / Temperature Sensor
  • Program Memory Size: 4 KB
  • Program Memory Size: 4KB
  • RAM Memory Size: 256Byte
  • SVHC: No SVHC (15-Jun-2015)
  • Supply Voltage Max: 5.5V
  • Supply Voltage Min: 2.7V
  • Supply Voltage Range: 2.7V to 5.5V


The Atmel ATTINY45-20PU is a high performance and low power AVR 8-bit microcontroller with 4K bytes of in-system programmable flash, alongside 256 bytes of EEPROM and 256 bytes of SRAM. The device is manufactured using Atmel’s high density non-volatile memory technology. The on-chip ISP flash allows the program memory to be re-programmed in-system through an SPI serial interface, by a conventional non-volatile memory programmer or by an on-chip boot code running on the AVR core.


  • Universal serial interface with start condition detector
  • Comes with debugWIRE on-chip debug system
  • In-system programmable via SPI port
  • Low power idle, ADC noise reduction and power-down modes
  • Six programmable input and output lines
  • External and internal interrupt sources
  • Programmable brown-out detection circuit
  • Internal calibrated oscillator
  • On-chip analogue comparator
  • 8-bit high speed timer/counter with separate prescaler and two PWM channels


  • Automation & Process Control
  • Automotive
  • Embedded Design & Development

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View this product in our online catalog

This product also features on the following pages and catalog editions:

  •  130/20
  •  132/21


Availability:  921

  • 921 in stock for same day shipping
Check stock and lead times
    Per the manufacturer, more stock expected week of 8/24/15

Price for: Each 1

Minimum order quantity: 1

Order multiple quantity: 1

Unit Price: $1.30



Quantity List Price
1 - 9 $1.30
10 - 24 $1.14
25 - 49 $1.07
50 - 99 $0.907
100 - 249 $0.854
250 - 499 $0.822
500 - 999 $0.806
1000+ $0.711

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