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ATmega32U4 带有32K系统内可编程Flash存储器

Flash (Kbytes)	32
EEPROM (Kbytes)	1
SRAM (Bytes)	2.5K
Max I/O Pins	26
Pb-Free Packages	VQFN(Sawn)44 TQFP44

32-Kbytes of In-System Programmable Flash, 1-Kbyte EEPROM, 2.5-Kbytes SRAM, USB 2.0 Full-speed/Low Speed Device Module. High-speed PWMs, 12-channel 10-bit ADC. JTAG test interface. Up to 16 MIPS Throughput at 16 MHz. 2.7 - 5.5 Volt operation.

• 16KB 系统内可编程Flash存储器 ：ATmega16U4
• 32KB 系统内可编程Flash存储器 ： ATmega32U4

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.

ATmega32U4 特性

• 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
  – 32K Bytes of In-System Self-Programmable Flash
• Endurance: 100,000 Write/Erase Cycles
  – Optional Boot Code Section with Independent Lock Bits
• 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
  – 2.5K Bytes Internal SRAM
  – 1K Bytes Internal EEPROM
• Endurance: 100,000 Write/Erase Cycles
  – 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
• Peripheral Features
  – On-chip PLL for USB and High Speed Timer: 32 up to 96 MHz operation
  – Two 8-bit Timer/Counters 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 (8xPCINT + 5xINT sources)
  – On-chip Temperature Sensor (see A/D Converter section)
• 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
  – 44-lead TQFP Package, 10x10mm
  – 44-lead QFN Package, 7x7mm
• 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

ATmega32U4 订购型号

ATmega32U4 技术支持

1. ATMEL 爱特梅尔USB 微控制器AT90USB32U4 数据手册DataSheet 下载. PDF
2. 使用USB 定时/计数器的PWM功能设计要点 .PDF (编号:Tech USB 00045)
3. Atmel 爱特梅尔USB 微控制器简介.PDF (编号:Tech USB 00047)
4. USB指令集（版本：）
5. ATMEL 爱特梅尔公司全线产品目录. pdf