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Other Stuff

ATtiny13 vs ATtiny85
ATmega8 vs ATmega88
ATmega16 vs ATmega164
ISP and SPI
MAX232 Arduino
A small FAQ
Hardware Info

ATtiny13, ATtiny13A, ATtiny25, ATtiny45, and ATtiny85 Comparison

I often have to decide which part to use by looking through parametric tables and then datasheets, narrowing the search until I find what I am looking for. This page is an experiment in data reduction. I want to be able to look at as few pieces of information as possible to decide which part to use.

To this end I have selected from the parametric tables only those features or specifications that are different, ignoring features common to all parts. This page covers 8-pin parts. Although it appears that the x5 parts are a superset of the 13 parts, they are not code compatible - not even source code compatible, since not just the register addresses, but the bit locations in them are different.

ATtiny 8-pin Device Feature Table

DeviceATtiny13ATtiny13AATtiny25ATtiny45ATtiny85
Flash11248
SRAM6464128256512
EEPROM6464128256512
Touch Channels00433
USI00111
SPI00111
TWI (I2C)00111
Timers11222
External CrystalNNYYY
Output Compare22555
PWM22666
Temp Sensor00111
Interrupts1010151515
picoPowerNYNNN
ADC RefVcc, 1.1VVcc, 1.1VVcc, 1.1V, 2.56VVcc, 1.1V, 2.56VVcc, 1.1V, 2.56V
Temp Range1,2-40 to 85-40 to 125-40 to 105-40 to 85-40 to 85
Price30.941.371.430.810.92
DatasheetsATtiny13/AATtiny25/45/85

Notes:

  1. Temperatures are in degrees Centigrade.
  2. Automotive versions of the 25/45/85 have slower speeds and higher max temperatures.
  3. Prices are typical US $ per single unit as of April, 2012.

ATtiny 8-pin Device Pinouts