ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 429

• 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
22 USB Device Operating modes ............................................................ 266
23 Analog Comparator ............................................................................. 289
24 Analog to Digital Converter - ADC ..................................................... 292
21.8Speed Control .....................................................................................................260
21.9Memory management .........................................................................................260
21.10PAD suspend ....................................................................................................261
21.11Plug-in detection ................................................................................................262
21.12Registers description .........................................................................................263
21.13USB Software Operating modes .......................................................................265
22.1Introduction ..........................................................................................................266
22.2Power-on and reset .............................................................................................266
22.3Endpoint reset .....................................................................................................266
22.4USB reset ............................................................................................................267
22.5Endpoint selection ...............................................................................................267
22.6Endpoint activation ..............................................................................................267
22.7Address Setup .....................................................................................................268
22.8Suspend, Wake-up and Resume ........................................................................269
22.9Detach .................................................................................................................269
22.10Remote Wake-up ..............................................................................................270
22.11STALL request ..................................................................................................270
22.12CONTROL endpoint management ....................................................................271
22.13OUT endpoint management ..............................................................................272
22.14IN endpoint management ..................................................................................274
22.15Isochronous mode .............................................................................................275
22.16Overflow ............................................................................................................276
22.17Interrupts ...........................................................................................................276
22.18Registers ...........................................................................................................277
23.1Analog Comparator Multiplexed Input .................................................................291
24.1Features ..............................................................................................................292
24.2Operation .............................................................................................................294
24.3Starting a Conversion ..........................................................................................294
24.4Prescaling and Conversion Timing ......................................................................295
24.5Changing Channel or Reference Selection .........................................................298
24.6Temperature Sensor ...........................................................................................299
24.7ADC Noise Canceler ...........................................................................................301
ATmega16/32U4
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