ATXMEGA32A4-AU

The Atmel AVR XMEGA A4 is a family of low power, high performance and peripheral rich CMOS 8/16-bit microcontrollers based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the XMEGA A4 achieves throughputs approaching 1 Million Instructions Per Second (MIPS) per MHz allowing the system designer to optimize power consumption versus processing speed. The AVR CPU combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction, executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs many times faster than conventional single-accumulator or CISC based microcontrollers. The XMEGA A4 devices provide the following features: In-System Programmable Flash with Read-While-Write capabilities, Internal EEPROM and SRAM, four-channel DMA Controller, eight-channel Event System, Programmable Multi-level Interrupt Controller, 34 general purpose I/O lines, 16-bit Real Time Counter (RTC), five flexible 16-bit Timer/Counters with compare modes and PWM, five USARTs, two Two Wire Serial Interfaces (TWIs), two Serial Peripheral Interfaces (SPIs), AES and DES crypto engine, one Twelve-channel, 12-bit ADC with optional differential input with programmable gain, one Two-channel 12-bit DAC, two analog comparators with window mode, programmable Watchdog Timer with separate Internal Oscillator, accurate internal oscillators with PLL and prescaler and programmable Brown-Out Detection. The Program and Debug Interface (PDI), a fast 2-pin interface for programming and debugging, is available. The XMEGA A4 devices have five software selectable power saving modes. The Idle mode stops the CPU while allowing the SRAM, DMA Controller, Event System, Interrupt Controller and all peripherals to continue functioning. The Power-down mode saves the SRAM and register contents but stops the oscillators, disabling all other functions until the next TWI or pin-change interrupt, or Reset. In Power-save mode, the asynchronous Real Time Counter continues to run, allowing the application to maintain a timer base while the rest of the device is sleeping. In Standby mode, the Crystal/Resonator Oscillator is kept running while the rest of the device is sleeping. This allows very fast start-up from external crystal combined with low power consumption. In Extended Standby mode, both the main Oscillator and the Asynchronous Timer continue to run. To further reduce power consumption, the peripheral clock to each individual peripheral can optionally be stopped in Active mode and in Idle sleep mode. The device is manufactured using Atmel's high-density nonvolatile memory technology. The program Flash memory can be reprogrammed in-system through the PDI. A Bootloader running in the device can use any interface to download the application program to the application memory.

Applications

• Industrial control
• Climate control
• Hand-held battery applications
• Factory automation
• ZigBee
• Power tools
• Building control
• Motor control
• HVAC
• Board control
• Networking
• Metering
• White Goods
• Optical
• Medical Applications

Key features

• High-performance, Low-power 8/16-bit Atmel AVR XMEGA Microcontroller
• Non-volatile Program and Data Memories
• 16 KB - 128 KB of In-System Self-Programmable Flash
• 4 KB - 8 KB Boot Code Section with Independent Lock Bits
• 1 KB - 2 KB EEPROM
• 2 KB - 8 KB Internal SRAM
• Peripheral Features
• Four-channel DMA Controller with support for external requests
• Eight-channel Event System
• Five 16-bit Timer/Counters
• Three Timer/Counters with 4 Output Compare or Input Capture channels
• Two Timer/Counters with 2 Output Compare or Input Capture channels
• High-Resolution Extensions on all Timer/Counters
• Advanced Waveform Extension on one Timer/Counter
• Five USARTs
• IrDA Extension on one USART
• Two Two-Wire Interfaces with dual address match (I2C and SMBus compatible)
• Two SPIs (Serial Peripheral Interfaces) peripherals
• AES and DES Crypto Engine
• 16-bit Real Time Counter with Separate Oscillator
• One Twelve-channel, 12-bit, 2 Msps Analog to Digital Converter
• One Two-channel, 12-bit, 1 Msps Digital to Analog Converter
• Two Analog Comparators with Window compare function
• External Interrupts on all General Purpose I/O pins
• Programmable Watchdog Timer with Separate On-chip Ultra Low Power Oscillator
• Special Microcontroller Features
• Power-on Reset and Programmable Brown-out Detection
• Internal and External Clock Options with PLL
• Programmable Multi-level Interrupt Controller
• Sleep Modes: Idle, Power-down, Standby, Power-save, Extended Standby
• Advanced Programming, Test and Debugging Interfaces
• PDI (Program and Debug Interface) for programming, test and debugging
• I/O and Packages
• 34 Programmable I/O Lines
• 44 - lead TQFP
• 44 - pad VQFN/QFN
• 49 - ball VFBGA
• Operating Voltage
• 1.6 – 3.6V
• Speed performance
• 0 – 12 MHz @ 1.6 – 3.6V
• 0 – 32 MHz @ 2.7 – 3.6V