ATMEGA88-20MU

The Atmel AVR® core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in a single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers. The ATmega48/V/ 88/V /168/V provides the following features: 4K/8K/16K bytes of In-System Programmable Flash with Read-While-Write capabilities, 256/512/512 bytes EEPROM, 512/1K/1K bytes SRAM, 23 general purpose I/O lines, 32 general purpose working registers, Real Time Counter (RTC), three flexible Timer/Counters with compare modes and PWM, 1 serial programmable USARTs , 1 byte - oriented 2 - wire Serial Interface (I²C), a 6 - channel 10 - bit ADC (8 channels in TQFP and QFN/MLF packages) , a programmable Watchdog Timer with internal Oscillator, an SPI serial port, and six software selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and interrupt system to continue functioning. The Power - down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next interrupt or hardware reset. In Power - save mode, the asynchronous timer continues to run, allowing the user to maintain a timer base while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except asynchronous timer and ADC to minimize switching noise during ADC conversions. In Standby mode, the crystal/resonator oscillator is running while the rest of the device is sleeping. This allows very fast start - up combined with low power consumption. In Extended Standby mode, both the main oscillator and the asynchronous timer continue to run. Atmel offers the QTouch® library for embedding capacitive touch buttons, sliders and wheels functionality into AVR microcontrollers. The patented charge - transfer signal acquisition offers robust sensing and includes fully debounced reporting of touch keys and includes Adjacent Key Suppression® (AKS™) technology for unambiguous detection of key events. The easy - to - use QTouch Suite toolchain allows you to explore, develop and debug your own touch applications. The device is manufactured using Atmel’s high density non - volatile memory technology. The On - chip ISP Flash allows the program memory to be reprogrammed In - System through an SPI

Key features

• High Performance, Low Power Atmel AVR 8-Bit Microcontroller Family Advanced RISC Architecture
• 131 Powerful Instructions
• Most Single Clock Cycle Execution
• 32 x 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
• 4K/8K/16KBytes of In-System Self-Programmable Flash program Memory
• 256/512/512Bytes EEPROM
• 512/1K/1KBytes 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
• Atmel 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 • Temperature Measurement
• 6-channel 10-bit ADC in PDIP Package • Temperature Measurement
• Two Master/Slave SPI Serial Interface
• One Programmable Serial USART
• One Byte-oriented 2-wire Serial Interface (Philips I²C compatible)
• Programmable Watchdog Timer with Separate On-chip Oscillator
• One On-chip Analog Comparator
• Interrupt and Wake-up on Pin Change
• Special Microcontroller Features
• Power-on Reset and Programmable Brown-out Detection
• Internal Calibrated Oscillator
• External and Internal Interrupt Sources
• Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended 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: 2.7 - 5.5V for ATmega48/88/168 1.8 - 5.5V for ATmega48V/88V/168V
• Temperature Range: -40℃ to 85℃
• Speed Grade: ATmega48/88/168: 0 - 10MHz @ 2.7V - 5.5V, 0 - 20MHz @ 4.5V - 5.5V ATmega48V/88V/168V: 0 - 4MHz @ 1.8V - 5.5V, 0 - 10MHz @ 2.7V - 5.5V
• Power Consumption at 1MHz, 1.8V, 25℃
• Active Mode: 0.3mA
• Power-down Mode: 0.1μA
• Power-save Mode: 0.8μA (Including 32kHz RTC)