ATMEGA168-20PU

The ATmega48/V/88/V/168/V 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.

Key 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
• 256/512/512 bytes EEPROM
• 512/1K/1K bytes internal SRAM
• Write/erase cycles: 10,000 flash/100,000 EEPROM
• Data retention: 20 years at 85℃/100 years at 25℃
• 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
• Six PWM channels
• 8-channel 10-bit ADC in TQFP and QFN/MLF package
• 6-channel 10-bit ADC in PDIP Package
• Programmable serial USART
• Master/slave SPI serial interface
• Byte-oriented 2-wire serial interface (Philips I²C compatible)
• Programmable watchdog timer with separate on-chip oscillator
• On-chip analog comparator
• Interrupt and wake-up on pin change
• Special microcontroller features
• DebugWIRE on-chip debug system
• Power-on reset and programmable brown-out detection
• Internal calibrated 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-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF
• Operating voltage:
• 1.8V - 5.5V for Atmel ATmega48V/88V/168V
• 2.7V - 5.5V for Atmel ATmega48/88/168
• Temperature range: -40℃ to 85℃
• Speed grade:
• ATmega48V/88V/168V: 0 - 4MHz @ 1.8V - 5.5V, 0 - 10MHz @ 2.7V - 5.5V
• ATmega48/88/168: 0 - 10MHz @ 2.7V - 5.5V, 0 - 20MHz @ 4.5V - 5.5V
• Low power consumption
• Active mode: 250μA at 1MHz, 1.8V; 15μA at 32kHz, 1.8V (including oscillator)
• Power-down mode: 0.1μA at 1.8V