ATMEGA32U4-AU

The ATmega16U4/ATmega32U4 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 ATmega16U4/ATmega32U4 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Key features

• High Performance, Low Power AVR 8-Bit Microcontroller
• Advanced RISC Architecture – 135 Powerful Instructions – Most Single Clock Cycle Execution – 32x8 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 – 16/32K Bytes of In-System Self-Programmable Flash (ATmega16U4/ATmega32U4) – 1.25/2.5K Bytes Internal SRAM (ATmega16U4/ATmega32U4) – 512Bytes/1K Bytes Internal EEPROM (ATmega16U4/ATmega32U4) – Write/Erase Cycles: 10,000 Flash/100,000 EEPROM – Data retention: 20 years at 85℃, 100 years at 25℃ – Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation All supplied parts are preprogramed with a default USB bootloader – 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 Module with Interrupt on Transfer Completion – Complies fully with Universal Serial Bus Specification Rev 2.0 – Supports data transfer rates up to 12 Mbit/s and 1.5 Mbit/s – 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 independent 832 bytes USB DPRAM for endpoint memory allocation – Suspend/Resume Interrupts – CPU Reset possible on USB Bus Reset detection – 48 MHz from PLL for Full-speed Bus Operation – USB Bus Connection/Disconnection on Microcontroller Request – Crystal-less operation for Low Speed mode
• Peripheral Features – On-chip PLL for USB and High Speed Timer: 32 up to 96 MHz operation – One 8-bit Timer/Counter with Separate Prescaler and Compare Mode – Two 16-bit Timer/Counter with Separate Prescaler, Compare- and Capture Mode – One 10-bit High-Speed Timer/Counter with PLL (64 MHz) and Compare Mode – Four 8-bit PWM Channels – Four PWM Channels with Programmable Resolution from 2 to 16 Bits – Six PWM Channels for High Speed Operation, with Programmable Resolution from 2 to 11 Bits – Output Compare Modulator – 12-channels, 10-bit ADC (features Differential Channels with Programmable Gain) – Programmable Serial USART with Hardware Flow Control – 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 – On-chip Temperature Sensor
• Special Microcontroller Features – Power-on Reset and Programmable Brown-out Detection – Internal 8 MHz Calibrated Oscillator – Internal clock prescaler & On-the-fly Clock Switching (Int RC / Ext Osc) – External and Internal Interrupt Sources – Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
• I/O and Packages – All I/O combine CMOS outputs and LVTTL inputs – 26 Programmable I/O Lines
• Operating Voltages – 2.7 - 5.5V Operating temperature – Industrial (-40℃ to +85℃)
• Maximum Frequency – 8 MHz at 2.7V - Industrial range – 16 MHz at 4.5V - Industrial range