Specification:

ATtiny45 AVR Microcontroller 8bit ( Atmel ) is high-performance, low-power Microchip

1. 8-bit AVR RISC-based microcontroller combines
2. 4KB ISP flash memory
3. 256-Byte EEPROM
4. 256B SRAM
5. 6 general-purpose I/O lines
6. 32 general-purpose working registers
7. One 8-bit timer/counter with compare modes
8. One 8-bit high-speed timer/counter
9. USI, internal and external Interrupts
10. 4-channel 10-bit A/D converter
11. Programmable watchdog timer with internal oscillator
12. Three software selectable power saving modes
13. DebugWIRE for on-chip debugging.
14. The device achieves a throughput of 20 MIPS at 20 MHz and operates between 2.7-5.5

ATtiny2313 AVR Microcontroller 8bit ( Atmel )