ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 427
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
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
iii
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