Features

• High-performance, Low-power AVR® 8-bit Microcontroller
• Advanced RISC Architecture
  – 131 Powerful Instructions – Most Single-clock Cycle Execution
  – 32 x 8 General Purpose Working Registers
  – Fully Static Operation
  – Up to 16 MIPS Throughput at 16 MHz
  – On-chip 2-cycle Multiplier
• High Endurance Non-volatile Memory segments
  – 32K Bytes of In-System Self-programmable Flash program memory
  – 1024 Bytes EEPROM
  – 2K Byte Internal SRAM
  – Write/Erase Cycles: 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
• JTAG (IEEE std. 1149.1 Compliant) Interface
  – Boundary-scan Capabilities According to the JTAG Standard
  – Extensive On-chip Debug Support
  – Programming of Flash, EEPROM, Fuses, and Lock Bits through theJTAG Interface
• Peripheral Features
  – Two 8-bit Timer/Counters with Separate Prescalers and CompareModes
  – One 16-bit Timer/Counter with Separate Prescaler, CompareMode, and Capture
Mode
  – Real Time Counter with Separate Oscillator
  – Four PWM Channels
  – 8-channel, 10-bit ADC
     8 Single-ended Channels
     7 Differential Channels in TQFP PackageOnly 
     2 Differential Channels with Programmable Gainat 1x, 10x, or 200x
  – Byte-oriented Two-wire Serial Interface
  – Programmable Serial USART
  – Master/Slave SPI Serial Interface
  – Programmable Watchdog Timer with Separate On-chip Oscillator
  – On-chip Analog Comparator
• Special Microcontroller Features
  – Power-on Reset and Programmable Brown-out Detection
  – Internal Calibrated RC 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
  – 32 Programmable I/O Lines
  – 40-pin PDIP, 44-lead TQFP, and 44-pad QFN/MLF
• Operating Voltages 
  – 2.7 - 5.5V for ATmega32L
  – 4.5 - 5.5V for ATmega32
• Speed Grades
  – 0 - 8 MHz for ATmega32L
  – 0 - 16 MHz for ATmega32
• Power Consumption at 1 MHz, 3V, 25°C for ATmega32L
  – Active: 1.1 mA
  – Idle Mode: 0.35 mA
  – Power-down Mode: < 1 µA