ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 431

• Manufacturer Part Number: ATmega32U4
• Manufacturer: Atmel Corporation

Specifications of ATmega32U4

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 14
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 26
• Ext Interrupts: 13
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 3.3
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 12
• Input Capture Channels: 2
• Pwm Channels: 8
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

7766F–AVR–11/10
29 Electrical Characteristics .................................................................... 378
30 Typical Characteristics ........................................................................ 386
31 Register Summary ............................................................................... 408
32 Instruction Set Summary .................................................................... 412
33 Ordering Information ........................................................................... 415
34 Packaging Information ........................................................................ 417
35 Errata ..................................................................................................... 419
28.6Parallel Programming ..........................................................................................352
28.7Serial Downloading .............................................................................................360
28.8Serial Programming Pin Mapping ........................................................................361
28.9Programming via the JTAG Interface ..................................................................365
29.1Absolute Maximum Ratings* ...............................................................................378
29.2DC Characteristics ..............................................................................................378
29.3External Clock Drive Waveforms .........................................................................380
29.4External Clock Drive ............................................................................................380
29.5Maximum speed vs. V
29.62-wire Serial Interface Characteristics .................................................................381
29.7SPI Timing Characteristics ..................................................................................383
29.8Hardware Boot EntranceTiming Characteristics ..................................................384
30.1Active Supply Current ..........................................................................................386
30.2Idle Supply Current ..............................................................................................389
30.3Power-down Supply Current ...............................................................................391
30.4Power-save Supply Current ................................................................................392
30.5Pin Pull-Up ..........................................................................................................393
30.6Pin Driver Strength ..............................................................................................394
30.7Pin Threshold and Hysteresis .............................................................................397
30.8BOD Threshold ....................................................................................................400
30.9Internal Oscilllator Speed ....................................................................................402
30.10Current Consumption of Peripheral Units ..........................................................405
30.11Current Consumption in Reset and Reset Pulsewidth ......................................407
33.1ATmega16U4 ......................................................................................................415
33.2ATmega32U4 ......................................................................................................416
34.1TQFP44 ...............................................................................................................417
34.2QFN44 .................................................................................................................418
CC ............................................................................................................................. 380
ATmega16/32U4
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