ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 429
ATmega32U4
Manufacturer Part Number
ATmega32U4
Description
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
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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
v
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