ATMEGA168PA-AU - 8-bit CMOS microcontroller, 16 KB Flash

Microchip ATmega168 Series

The ATmega168 is a low power, CMOS 8-bit microcontrollers based on the AVR® enhanced
RISC architecture. By executing instructions in a single clock cycle, the devices achieve CPU throughput
approaching one million instructions per second (MIPS) per megahertz, allowing the system designer to
optimize power consumption versus processing speed.

Features

• High performance, low power AVR® 8-bit microcontroller
• Advanced RISC architecture
• 131 powerful instructions – most single clock cycle execution
• 32 × 8 general purpose working registers
• Fully static operation
• Up to 20 MIPS throughput at 20MHz
• On-chip 2-cycle multiplier
• High endurance non-volatile memory segments
• 4/8/16 Kbytes of in-system self-programmable flash program memory
• 256/512/512 bytes EEPROM
• 512/1K/1Kbytes internal SRAM
• Write/erase cyles: 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
• 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 and compare mode
• One 16-bit timer/counter with separate prescaler, compare mode, and capture mode
• Real time counter with separate oscillator