Features

High-performance, Low-power AVR 8-bit Microcontroller
Advanced RISC Architecture
- 130 powerful instructions - most single-clock cycle execution
- 32 x 8 general purpose working registers
- Fully static operation
- Up to 16 MIPS throughput at 16 MHz
- On-chip 2-cycle multiplier
High Endurance Nonvolatile Memory segments
- 8 KB of In-System Self-programmable Flash program memory
- 512B EEPROM
- 1 KB internal SRAM
- Write/erase cycles: 10,000 Flash/100,000 EEPROM
- Data retention: 20 years at 85°C/100 years at 25°C⁽¹⁾
- Optional boot code section with independent lock bits
  - In-system programming by on-chip boot program
  - True read-while-write operation
- Programming lock for software security
Microchip QTouch^® library support
- Capacitive touch buttons, sliders and wheels
- QTouch and QMatrix acquisition
- Up to 64 sense channels
Peripheral Features
- Two 8-bit timer/counters with separate prescaler, one compare mode
- One 16-bit timer/counter with separate prescaler, compare mode, and capture mode
- Real-time counter with separate oscillator
- Three PWM channels
- 8-channel ADC in TQFP and QFN/MLF package
  - Eight channels 10-bit accuracy
- 6-channel ADC in PDIP package
  - Six channels 10-bit accuracy
- Byte-oriented two-wire serial interface
- Programmable serial USART
- Master/slave SPI serial interface
- Programmable watchdog timer with separate on-chip oscillator
- On-chip analog comparator
Special Microcontroller Features
- Power-on Reset and programmable Brown-out Detection
- Internal calibrated RC oscillator
- External and internal interrupt sources
- Five sleep modes: Idle, ADC noise reduction, power-save, power-down, and standby
I/O and Packages
- 23 programmable I/O lines
- 28-lead PDIP, 32-lead TQFP, and 32-pad QFN/MLF
Operating Voltages
- 2.7 - 5.5V
Speed Grades
- 0 - 16 MHz
Power Consumption at 4 MHz, 3V, 25°C
- Active: 3.6 mA
- Idle mode: 1.0 mA
- Power-down mode: 0.5 μA