The ATmga32A-PU is a newer version of the ATmega32-16PU. It is fully pin and function compatible. Active and Idle mode current consumption of the ATmega32A has been reduced significantly compared to the ATmega32.

Atmel ATmega32A-PU AVR Microcontroller 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 the JTAG Interface
• Peripheral Features
  • Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes
  • One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, 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 Package Only
    • 2 Differential Channels with Programmable Gain at 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 ATmega32A
• Speed Grades
  • 0 - 16 MHz for ATmega32A
• Power Consumption at 1 MHz, 3V, 25°C for ATmega32A
  • Active: 0.6 mA
  • Idle Mode: 0.2 mA
  • Power-down Mode: < 1 μA