Overview
The ATmega32U6/AT90USB64/128 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 ATmega32U6/AT90USB64/128 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
– 135 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
• Non-volatile Program and Data Memories
– 32/64/128K Bytes of In-System Self-Programmable Flash
• Endurance: 100,000 Write/Erase Cycles
– Optional Boot Code Section with Independent Lock Bits
• USB Bootloader programmed by default in the Factory
• In-System Programming by On-chip Boot Program hardware activated after reset
• True Read-While-Write Operation
• All supplied parts are preprogramed with a default USB bootloader
– 1K/2K/4K (32K/64K/128K Flash version) Bytes EEPROM
• Endurance: 100,000 Write/Erase Cycles
– 2.5K/4K/8K (32K/64K/128K Flash version) Bytes Internal SRAM
– Up to 64K Bytes Optional External Memory Space
– 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
• USB 2.0 Full-speed/Low-speed Device and On-The-Go Module
– Complies fully with:
– Universal Serial Bus Specification REV 2.0
– On-The-Go Supplement to the USB 2.0 Specification Rev 1.0
– Supports data transfer rates up to 12 Mbit/s and 1.5 Mbit/s
• USB Full-speed/Low Speed Device Module with Interrupt on Transfer Completion
– Endpoint 0 for Control Transfers : up to 64-bytes
– 6 Programmable Endpoints with IN or Out Directions and with Bulk, Interrupt or Isochronous Transfers
– Configurable Endpoints size up to 256 bytes in double bank mode
– Fully independant 832 bytes USB DPRAM for endpoint memory allocation
– Suspend/Resume Interrupts
– Power-on Reset and USB Bus Reset
– 48 MHz PLL for Full-speed Bus Operation
– USB Bus Disconnection on Microcontroller Request
• USB OTG Reduced Host :
– Supports Host Negotiation Protocol (HNP) and Session Request Protocol (SRP) for OTG dual-role devices
– Provide Status and control signals for software implementation of HNP and SRP
– Provides programmable times required for HNP and SRP
• Peripheral Features
– Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
– Two16-bit Timer/Counter with Separate Prescaler, Compare- and Capture Mode
– Real Time Counter with Separate Oscillator
– Four 8-bit PWM Channels
– Six PWM Channels with Programmable Resolution from 2 to 16 Bits
– Output Compare Modulator
– 8-channels, 10-bit ADC
– Programmable Serial USART
– Master/Slave SPI Serial Interface
– Byte Oriented 2-wire Serial Interface
– Programmable Watchdog Timer with Separate On-chip Oscillator
– On-chip Analog Comparator
– Interrupt and Wake-up on Pin Change
• Special Microcontroller Features
– Power-on Reset and Programmable Brown-out Detection
– Internal Calibrated 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
– 48 Programmable I/O Lines
– 64-lead TQFP and 64-lead QFN
• Operating Voltages
– 2.7 - 5.5V
• Operating temperature
– Industrial (-40°C to +85°C)
• Maximum Frequency
– 8 MHz at 2.7V - Industrial range
– 16 MHz at 4.5V - Industrial range