Overview
The ATtiny48/88 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny48/88 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Features
• High Performance, Low Power AVR® 8-Bit Microcontroller
• Advanced RISC Architecture
   – 123 Powerful Instructions – Most Single Clock Cycle Execution
   – 32 x 8 General Purpose Working Registers
   – Fully Static Operation
• High Endurance Non-volatile Memory Segments
   – 4K/8K Bytes of In-System Self-Programmable Flash Program Memory
   – 64/64 Bytes EEPROM
   – 256/512 Bytes Internal SRAM
   – Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
   – Data Retention: 20 years at 85°C / 100 years at 25°C
   – Programming Lock for Software Security
• Peripheral Features
   – One 8-bit Timer/Counter with Separate Prescaler and Compare Mode
   – One 16-bit Timer/Counter with Prescaler, and Compare and Capture Modes
   – 6- or 8-channel 10-bit ADC
   – 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
   – In-System Programmable via SPI Port
   – Power-On Reset and Programmable Brown-Out Detection
   – Internal Calibrated Oscillator
   – External and Internal Interrupt Sources
   – Three Sleep Modes: Idle, ADC Noise Reduction and Power-Down
   – On-Chip Temperature Sensor
• I/O and Packages
   – 24 Programmable I/O Lines:
• 28-pin PDIP
• 28-pad QFN/MLF
   – 28 Programmable I/O Lines:
• 32-lead TQFP
• 32-pad QFN/MLF
• 32-ball UFBGA
• Operating Voltage:
   – 1.8 – 5.5V
• Temperature Range:
   – -40°C to +85°C
• Speed Grade:
   – 0 – 4 MHz @ 1.8 – 5.5V
   – 0 – 8 MHz @ 2.7 – 5.5V
   – 0 – 12 MHz @ 4.5 – 5.5V
• Low Power Consumption
   – Active Mode: 1 MHz, 1.8V: 240 µA
   – Power-Down Mode: 0.1 µA at 1.8V