ATtiny microcontroller comparison chart

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ATtiny2313 in 20-pin narrow dual in-line package (DIP-20N)

ATtiny (also known as TinyAVR) is a subfamily of the popular 8-bit AVR microcontrollers, which typically has fewer features, fewer I/O pins, and less memory than other AVR series chips. The first members of this family were released in 1999 by Atmel (later acquired by Microchip Technology in 2016).[1]

Features

ATtiny microcontrollers specifically exclude various common features, such as: USB peripheral, DMA controller, crypto engine, or an external memory bus.

The following table summarizes common features of the ATtiny microcontrollers, for easy comparison. This table is not meant to be an unabridged feature list.

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Device (family)[2] Max
clock
(MHz)		 Flash
(KiB)		 SRAM
(bytes)		 EEPROM
(bytes)		 USART (UART) I²C
(TWI)		 SPI Timers 16/12/8
(bits)		 ADC pins GPIO pins IC Packages GCC arch ID [3] Pgm
Dbg		 Refs
ATtiny11, ATtiny11L 6, 2 1 No No No No No 0 / 0 / 1 No 5 DIP-8N, SO200-8 avr1 HVSP [4]
ATtiny12, ATtiny12L, ATtiny12V 8, 1.2 1 No 64 No No No 0 / 0 / 1 No 5 DIP-8N, SO200-8 avr1 ISP, HVSP [4]
ATtiny15L 1.6 1 No 64 No No No 0 / 0 / 2 4 6 DIP-8N, SO200-8 avr1 ISP, HVSP [5]
ATtiny28L, ATtiny28V 4, 1.2 2 No No No No No 0 / 0 / 1 No 11 DIP-28N, TQFP-32, QFN-32 avr1 HVPP [6]
ATtiny22, ATtiny22L 8, 4 2 128 128 No No No 0 / 0 / 1 No 5 DIP-8N, SO200-8 avr2 ISP, HVSP [7]
ATtiny26, ATtiny26L 16, 8 2 128 128 USI* master, slave* master, slave* 0 / 0 / 2 11 16 DIP-20N, SO300-20, QFN-32 avr2 ISP, HVPP [8]
ATtiny13, ATtiny13V, ATtiny13A 20, 10 1 64 64 No No No 0 / 0 / 1 4 6 DIP-8N, SO150-8, SO209-8, VQFN-10, WQFN-20 avr25 ISP, dW, HVSP [9][10][11]
ATtiny24, ATtiny24V, ATtiny24A, ATtiny44, ATtiny44V, ATtiny44A, ATtiny84, ATtiny84V, ATtiny84A 20, 10 2, 4, 8 128, 256, 512 128, 256, 512 USI* master, slave* master, slave* 1 / 0 / 1 8 12 DIP-14N, SO150-14, QFN-20, VQFN-20, UFBGA-15 avr25 ISP, dW, HVSP [12][13][14][15][16][17]
ATtiny25, ATtiny25V, ATtiny45, ATtiny45V, ATtiny85, ATtiny85V 20, 10 2, 4, 8 128, 256, 512 128, 256, 512 USI* master, slave* master, slave* 0 / 0 / 2[a] 4 6 DIP-8N, SO208-8, TSSOP-8, QFN-20 avr25 ISP, dW, HVSP [18][19][20]
ATtiny43U[b] 8 4 256 64 USI* master, slave* master, slave* 0 / 0 / 2 4 16 SO300-20, QFN-20 avr25 ISP, dW, HVPP [21]
ATtiny48, ATtiny88 12 4, 8 256, 512 64 No master, slave master, slave 1 / 0 / 1 6 24 DIP-28N, QFN-28 avr25 ISP, dW, HVPP [22][23]
No master, slave master, slave 1 / 0 / 1 8 28 TQFP-32, QFN-32, UFBGA-32
ATtiny87, ATtiny167 16 8, 16 512 512 USI*, UART* No master, slave 1 / 0 / 1 11 16 SO300-20, TSSOP-20, VQFN-32 avr25, avr35 ISP, dW, HVPP [24][25]
ATtiny261, ATtiny261A, ATtiny461, ATtiny461A, ATtiny861, ATtiny861A 20 2, 4, 8 128, 256, 512 128, 256, 512 USI* master, slave* master, slave* 1 / 0 / 1[c] 11 16 DIP-20N, SO300-20, TSSOP-20, QFN-32 avr25 ISP, dW, HVPP [26][27][28][29][30]
ATtiny441, ATtiny841 16 4, 8 256, 512 256, 512 2 USART* slave master, slave 2 / 0 / 1 12 12 SO150-14, QFN-20, VQFN-20 avr25 ISP, dW, HVSP [31][32]
ATtiny828 20 8 512 256 USART* slave master, slave 1 / 0 / 1 28 28 TQFP-32, QFN-32 avr25 ISP, dW, HVPP [33]
ATtiny1634 12 16 1024 256 USI*, 2 USART* slave master* 1 / 0 / 1 12 18 SO300-20, QFN-20 avr35 ISP, dW, HVPP [34]
ATtiny2313, ATtiny2313V, ATtiny2313A, ATtiny4313 20 2, 4 128, 256 128, 256 USI*, USART* master, slave* master, slave* 1 / 0 / 1 No 18 DIP-20N, SO300-20, VQFN-20 avr25 ISP, dW, HVPP [35][36][37][38]
ATtiny4, ATtiny5, ATtiny9, ATtiny10 12 0.5 / 1 32 No No No No 1 / 0 / 0 4 [d] 4 SOT23-6, UDFN-8 avrtiny TPI [39][40][41][42]
ATtiny20 12 2 128 No No slave master, slave 1 / 0 / 1 8 12 SO150-14, TSSOP-14, VQFN-20, UFBGA-15, WLCSP-12 avrtiny TPI [43]
ATtiny40 12 4 256 No No slave master, slave 1 / 0 / 1 12 18 SO300-20, TSSOP-20, VQFN-20 avrtiny TPI [44]
ATtiny102(F) 12 1 32 No USART* No master* 1 / 0 / 0 5 6 SO150-8, UDFN-8 avrtiny TPI [45]
ATtiny104(F) 12 1 32 No USART* No master* 1 / 0 / 0 9 12 SO150-14 avrtiny TPI [46]
ATtiny202, ATtiny402
(0-series)		 20 2, 4 128, 256 64, 128 USART* master, slave master, slave 2 / 0 / 0
/ RTT		 6 6 SO150-8 avrxmega3 UPDI [47][48]
ATtiny204, ATtiny404, ATtiny804, ATtiny1604
(0-series)		 20 2, 4, 8, 16 128, 256, 512, 1024 64, 128, 256 USART* master, slave master, slave 2 / 0 / 0
/ RTT		 10 12 SO150-14 avrxmega3 UPDI [49][50][51][52]
ATtiny406, ATtiny806, ATtiny1606
(0-series)		 20 4, 8, 16 256, 512, 1024 128, 256 USART* master, slave master, slave 2 / 0 / 0
/ RTT		 12 18 SO300-20, VQFN-20 avrxmega3 UPDI [53][54][55]
ATtiny807, ATtiny1607
(0-series)		 20 8, 16 512, 1024 128, 256 USART* master, slave master, slave 2 / 0 / 0
/ RTT		 12 22 VQFN-24 avrxmega3 UPDI [56][57]
ATtiny212, ATtiny412
(1-series)		 20 2, 4 128, 256 64, 128 USART* master, slave master, slave 2 / 1 / 0
/ RTT		 6 6 SO150-8 avrxmega3 UPDI [58][59]
ATtiny214, ATtiny414, ATtiny814, ATtiny1614
(1-series)		 20 2, 4, 8, 16 128, 256, 512, 2048 64, 128, 256 USART* master, slave master, slave 2 / 1 / 0
/ RTT		 10 12 SO150-14 avrxmega3 UPDI [60][61][62][63]
ATtiny416, ATtiny816, ATtiny1616, ATtiny3216
(1-series)		 20 4, 8, 16, 32 256, 512, 2048 128, 256 USART* master, slave master, slave 2or3 / 1 / 0
/ RTT		 12 18 SO300-20, QFN-20, VQFN-20 avrxmega3 UPDI [64][65][66][67]
ATtiny417, ATtiny817, ATtiny1617, ATtiny3217
(1-series)		 20 4, 8, 16, 32 256, 512, 2048 128, 256 USART* master, slave master, slave 2 / 1 / 0
/ RTT		 12 22 VQFN-24, QFN-24 avrxmega3 UPDI [68][69][70][71]
ATtiny424, ATtiny824, ATtiny1624, ATtiny3224
(2-series)		 20 4, 8, 16, 32 512, 1024, 2048, 3072 128, 128, 256, 256 2 USART* yes yes 3 / 0 / 0
/ RTT		 9 12 SO-14, TSSOP-14 avrxmega3 UPDI [72][73]
ATtiny426, ATtiny826, ATtiny1626, ATtiny3226
(2-series)		 20 4, 8, 16, 32 512, 1024, 2048, 3072 128, 128, 256, 256 2 USART* yes yes 3 / 0 / 0
/ RTT		 15 18 SO-20, SSTOP-20, VQFN-20 avrxmega3 UPDI [74][75]
ATtiny427, ATtiny827, ATtiny1627, ATtiny3227
(2-series)		 20 4, 8, 16, 32 512, 1024, 2048, 3072 128, 128, 256, 256 2 USART* yes yes 3 / 0 / 0
/ RTT		 15 22 VQFN-24 avrxmega3 UPDI [76][77]
Device (family) Max clock
(MHz)		 Flash
(KiB)		 SRAM
(bytes)		 EEPROM
(bytes)		 USART (UART) I²C
(TWI)		 SPI Timers 16/12/8/R
(bits)		 ADC pins GPIO pins IC Packages GCC arch ID Pgm
Dbg		 Refs
Notes

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  1. ^ timer0 can use clocks up to the core clock, timer1 can use clocks up to 64MHz
  2. ^ Ultra-low voltage model with integrated boost converter that can be powered with only 0.7 volts.
  3. ^ timer/counter1 is a 10-bit counter that can use clocks to 64MHz.
  4. ^ ADC only on ATtiny5/10, and channels are 8 bits instead of 10
  • Package column - the number after the dash is the number of pins on the package. DIP packages in this table are 0.3 inches (7.62 mm) row-to-row. SOwww means SOIC package with a case width of 'www' in thousandth of an inch. Though some package types are known by more than one name, a common name was chosen to make it easier to compare packages.
  • UART/I²C/SPI columns - green cell means a dedicated peripheral, * yellow cell means a multi-feature peripheral that is chosen by setting configuration bits. Most USART peripherals support a minimum choice between UART or SPI, where as some might support additional choices, such as LIN, IrDA, RS-485.
  • Timers column - more recent families have wider timers and may allow chaining two 16-bit timers to do 32-bit capture. RTT is a 16-bit Real Time Timer that is driven by a 32.768KHz clock, though Microchip calls it RTC for Real Time Counter (easily confused to mean Real Time Clock).
  • ADC pins column - the total number of analog channels that are accessible via pins that multiplex into the ADC input. Most parts have one ADC, a few have two ADC.
  • Pgm/Dbg column - flash programming and debugging protocols: HVPP means High Voltage Parallel Programming 12V protocol, HVSP means High Voltage Serial Programming 12V protocol, ISP means In-System Programmable protocol, uses SPI to program the internal flash. TPI is Tiny Programming Interface. dW means debugWIRE protocol. UPDI means Unified Program and Debug Interface protocol (newest).[78]
Abbreviations
  • TWI: Many of Atmels microcontrollers contain built-in support for interfacing to a two-wire bus, called Two-Wire Interface. This is essentially the same thing as the I²C interface by Philips, but that term is avoided in Atmel's documentation due to trademark issues.
  • USI: Universal Serial Interface (not to be confused with USB). The USI is a multi-purpose hardware communication module. With appropriate software support, it can be used to implement an SPI,[79] I²C[80][81] or UART[82] interface. USART peripherals have more features than USI peripherals.

Timeline

Newer parts use this naming convention

The following table lists each ATtiny microcontroller by the first release date of each datasheet.

Year Device (family)
1999 ATtiny11, ATtiny11L, ATtiny12, ATtiny12L, ATtiny12V, ATtiny22, ATtiny22L
2002 ATtiny15L, ATtiny26, ATtiny26L, ATtiny28L, ATtiny28V
2003 ATtiny13, ATtiny13V, ATtiny2313, ATtiny2313V, ATtiny4313
2005 ATtiny24, ATtiny24V, ATtiny25, ATtiny25V, ATtiny44, ATtiny44V, ATtiny45, ATtiny45V, ATtiny84, ATtiny84V, ATtiny85, ATtiny85V
2006 ATtiny261, ATtiny461, ATtiny861
2008 ATtiny13A, ATtiny24A, ATtiny44A, ATtiny48, ATtiny84A, ATtiny88
2009 ATtiny4, ATtiny5, ATtiny9, ATtiny10, ATtiny43U, ATtiny261A, ATtiny461A, ATtiny861A, ATtiny2313A
2010 ATtiny20, ATtiny40, ATtiny87, ATtiny167
2011 ATtiny1634
2012 ATtiny441, ATtiny841, ATtiny828
2016 ATtiny102(F), ATtiny104(F), ATtiny417, ATtiny817
2017 ATtiny212, ATtiny412, ATtiny214, ATtiny414, ATtiny814, ATtiny416, ATtiny816
2018 ATtiny202, ATtiny402, ATtiny204, ATtiny404, ATtiny804, ATtiny1604, ATtiny406, ATtiny806, ATtiny1606, ATtiny807, ATtiny1607, ATtiny1614, ATtiny1616, ATtiny3216, ATtiny1617, ATtiny3217
2020 ATtiny1624, ATtiny1626, ATtiny1627
2021 ATtiny424, ATtiny824, ATtiny426, ATtiny826, ATtiny427, ATtiny827

Development boards

The following are ATtiny development boards sold by Microchip Technology:

  • ATtiny104 Xplained Nano[83]
  • ATtiny416 Xplained Nano[84]
  • ATtiny817 AVR Parrot[85]
  • ATtiny817 Xplained Mini[86]
  • ATtiny817 Xplained Pro[87]
  • ATtiny3217 Xplained Pro[88]

See also

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References

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  1. ^ Page Module:Citation/CS1/styles.css has no content."Atmel Product Guide September 1999" (PDF). Atmel. September 1999. Archived (PDF) from the original on October 6, 2018. Retrieved October 6, 2018.
  2. ^ 8-bit AVR microcontrollers; Microchip.com
  3. ^ AVR compiler options; gcc.gnu.org
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  71. ^ Page Module:Citation/CS1/styles.css has no content."ATtiny3217 webpage". Microchip Technology. Retrieved July 7, 2018.
  72. ^ ATtiny1624; Microchip.
  73. ^ Page Module:Citation/CS1/styles.css has no content."ATTINY3224 - 8-bit Microcontrollers". www.microchip.com. Retrieved 2021-06-21.
  74. ^ ATtiny1626; Microchip.
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  76. ^ ATtiny1627; Microchip.
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  78. ^ Atmel Studio Release Notes; Microchip.com
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  83. ^ ATtiny104 Xplained Nano board; Microchip.
  84. ^ ATtiny416 Xplained Nano board; Microchip.
  85. ^ ATtiny817 AVR Parrot board; Microchip.
  86. ^ ATtiny817 Xplained Mini board; Microchip.
  87. ^ ATtiny817 Xplained Pro board; Microchip.
  88. ^ ATtiny3217 Xplained Pro board; Microchip.

Further reading

ATtiny
  • tinyAVR Microcontroller Projects for the Evil Genius; 1st Ed; Dhananjay Gadre, Nehul Malhotra; McGraw-Hill/TAB; 272 pages; 2011; Template:ISBN.
AVR
  • AVR Programming: Learning to Write Software for Hardware; 1st Ed; Elliot Williams; Maker Media; 474 pages; 2014; Template:ISBN
  • Some Assembly Required: Assembly Language Programming with the AVR Microcontroller; 1st Ed; Timothy Margush; CRC Press; 643 pages; 2011; Template:ISBN
  • AVR Microcontroller and Embedded Systems: Using Assembly and C; 1st Ed; Muhammad Ali Mazidi, Sarmad Naimi, Sepehr Naimi; Pearson; 792 pages; 2010; Template:ISBN.

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