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(ATtiny48/88)
   – 64/64 Bytes EEPROM (ATtiny48/88)
   – 256/512 Bytes Internal SRAM (ATtiny48/88)
   – Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
   – Data retention: 20 years at 85°C / 100 years at 25°C
   – Optional Boot Code Section with Indepentent Lock Bits
      • In-System Programming by On-chip Boot Program
      • True Read-While-Write Operation
   – 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
   – 8-channel 10-bit ADC in 32-lead TQFP and 32-pad QFN/MLF package
   – 6-channel 10-bit ADC in 28-pin PDIP and 28-pad QFN/MLF package
   – 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
• I/O and Packages
   – 28 Programmable I/O Lines in 32-lead TQFP and 32-pad QFN/MLF package
   – 24 Programmable I/O Lines in 28-pin PDIP and 28-pad QFN/MLF package
   – 28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF
• Operating Voltage:
   – 1.8 – 5.5V
• Temperature Range:
   – -40°C to +85°C
• Speed Grade:
   – 0 – 2 MHz @ 1.8 – 5.5V
   – 0 – 6 MHz @ 2.7 – 5.5V
   – 0 – 12 MHz @ 4.5 – 5.5V
• Low Power Consumption
   – Active Mode: 1 MHz, 1.8V: 240µA
   – Power-down Mode: 0.1µA at 1.8V