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8-bit Microcontroller with 32K Bytes In-System Programmable Flash


The ATmega32 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 ATmega32 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power con sumption versus processing speed.

• 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 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



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