8-bit AVR® Microcontroller with 32K Bytes In-System Programmable Flash
●Overview
●The ATmega32A 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 ATmega32A 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
●– 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 withSeparate 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
