ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 427

• 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
14 16-bit Timers/Counters (Timer/Counter1 and Timer/Counter3) ....... 108
15 10-bit High Speed Timer/Counter4 ..................................................... 138
16 Output Compare Modulator (OCM1C0A) ........................................... 175
17 Serial Peripheral Interface – SPI ......................................................... 177
18 USART ................................................................................................... 186
13.88-bit Timer/Counter Register Description ............................................................102
14.1Overview .............................................................................................................108
14.2Accessing 16-bit Registers ..................................................................................110
14.3Timer/Counter Clock Sources .............................................................................113
14.4Counter Unit ........................................................................................................114
14.5Input Capture Unit ...............................................................................................115
14.6Output Compare Units .........................................................................................117
14.7Compare Match Output Unit ................................................................................119
14.8Modes of Operation .............................................................................................120
14.9Timer/Counter Timing Diagrams .........................................................................127
14.1016-bit Timer/Counter Register Description ........................................................129
15.1Features ..............................................................................................................138
15.2Overview .............................................................................................................138
15.3Counter Unit ........................................................................................................142
15.4Output Compare Unit ..........................................................................................143
15.5Dead Time Generator ..........................................................................................145
15.6Compare Match Output Unit ................................................................................146
15.7Synchronous update ...........................................................................................149
15.8Modes of Operation .............................................................................................149
15.9Timer/Counter Timing Diagrams .........................................................................156
15.10Fault Protection Unit ..........................................................................................157
15.11Accessing 10-Bit Registers ...............................................................................159
15.12Register Description ..........................................................................................162
16.1Overview .............................................................................................................175
16.2Description ..........................................................................................................175
17.1SS Pin Functionality ............................................................................................181
17.2Data Modes .........................................................................................................184
18.1Overview .............................................................................................................186
18.2Clock Generation .................................................................................................187
ATmega16/32U4
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