Microchip ATTINY13-20SQ, 8bit AVR Microcontroller, AVR, 20MHz, 1 kB Flash, 8-Pin SOIC

The Microchip ATtiny13 series low power CMOS 8 bit microcontroller is based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny13 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Advanced RISC architecture
120 powerful instructions
32 x 8 General purpose working registers
Fully static operation
Up to 20 MIPS throughput at 20 MHz
High endurance non-volatile memory segments
1K Bytes of In-system self-programmable flash program memory
64 Bytes EEPROM
64 Bytes internal SRAM
Write/Erase cycles 10,000 Flash/100,000 EEPROM
Data retention 20 years at 85°C
Programming lock for self-programming flash & EEPROM data security
One 8 bit trimer/counter with prescaler and two PWM channels
4-channel, 10-bit ADC with internal voltage reference
DebugWIRE on chip debug system
In system programmable via SPI port
External and internal interrupt sources
Low power Idle, ADC noise reduction, and power-down modes
Enhanced Power on reset circuit
Programmable brown-out detection circuit
Internal calibrated oscillator
8-pin PDIP/SOIC six programmable I/O lines
Operating voltage 1.8 - 5.5 V

Datasheet - ATTINY13-20SQ