Comparison
| Chip | Flash | EEPROM | SRAM | Vcc | Default Speed | IO Pins | ADC | UART | SPI | Avg Price |
| tiny13 | 1K | 64 | 64 | 2.7 – 5.5 | 9.6Mhz/8 | 6 | 4 | No | No | 1.40 |
| tiny25 |
2K | 128 | 128 | 2.7 – 5.5 | 8Mhz/8 | 6 | 4 | No | USI | 1.66 |
| tiny45 |
4K | 256 | 256 | 2.7 – 5.5 | 8Mhz/8 | 6 | 4 | No | USI | 2.13 |
| tiny85 |
8K | 512 | 512 | 2.7 – 5.5 | 8Mhz/8 | 6 | 4 | No | USI | 2.84 |
| tiny2313 | 2K | 128 | 128 | 2.7 – 5.5 | 8Mhz/8 | 18 | 0 | Yes | USI | 2.26 |
| mega8 | 8K | 512 | 1K | 4.5 – 5.5 | 1Mhz | 23 | 6 | Yes | Yes | 3.66 |
| mega48p | 4K | 256 | 512 | 2.7 – 5.5 | 8Mhz/8 | 23 | 6 | Yes | Yes | 2.58 |
| mega88p |
8K | 512 | 1K | 2.7 – 5.5 | 8Mhz/8 | 23 | 6 | Yes | Yes | 3.87 |
| mega168p |
16K | 512 | 1K | 2.7 – 5.5 | 8Mhz/8 | 23 | 6 | Yes | Yes | 4.11 |
| mega328p | 32K | 1K | 2K | 1.8 – 5.5 | 8Mhz/8 | 23 | 6 | Yes | Yes | 4.30 |
| mega644 | 64K | 2K | 4K | 2.7 – 5.5 | 8Mhz/8 | 32 | 8 | Yes | Yes | 7.87 |
AVRs are generally classified into four broad groups:
- tinyAVR — the ATtiny series
- 1–8 kB program memory
- 8–32-pin package
- Limited peripheral set
- megaAVR — the ATmega series
- 4–256 kB program memory
- 28–100-pin package
- Extended instruction set (Multiply instructions and instructions for handling larger program memories)
- Extensive peripheral set
- XMEGA — the ATxmega series
- 16–384 kB program memory
- 44–64–100-pin package (A4, A3, A1)
- Extended performance features, such as DMA, “Event System”, and cryptography support.
- Extensive peripheral set with DACs
- Application specific AVR
- megaAVRs with special features not found on the other members of the AVR family, such as LCD controller, USB controller, advanced PWM, CAN etc.
- FPSLIC (Field Programmable System Level Integrated Circuit), an AVR core on-die with an FPGA. The FPSLIC uses SRAM for the AVR program code, unlike all other AVRs. Partly due to the relative speed difference between SRAM and flash, the AVR core in the FPSLIC can run at up to 50MHz.
Programmers
Target boards : Minimalist target boards
430 mix
360 50% tin
Links
AVR datasheets from AVRfreaks.net
AVR datasheets from Atmel.com (Tiny/Mega)
Purchase link from SparkFun.com
AVR Fuse Calculator
http://cm-wiki.stanford.edu/wiki/AVR_Programming
Instructables – Microcontrollers Projects
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