ATMEGA32U4-AUR Atmel, ATMEGA32U4-AUR Datasheet - Page 426

• Manufacturer Part Number: ATMEGA32U4-AUR
• Description: MCU AVR 16K FLASH 16MHZ 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32U4-AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 26
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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ATmega16/32U4
7
8
9
10 I/O-Ports .................................................................................................. 65
11 External Interrupts ................................................................................. 85
12 Timer/Counter0, Timer/Counter1, and Timer/Counter3 Prescalers ... 89
13 8-bit Timer/Counter0 with PWM ............................................................ 91
Power Management and Sleep Modes ................................................. 43
System Control and Reset .................................................................... 49
Interrupts ................................................................................................ 61
6.10PLL ........................................................................................................................39
7.1Idle Mode .................................................................................................................44
7.2ADC Noise Reduction Mode ...................................................................................44
7.3Power-down Mode ..................................................................................................44
7.4Power-save Mode ...................................................................................................44
7.5Standby Mode .........................................................................................................45
7.6Extended Standby Mode .........................................................................................45
7.7Power Reduction Register .......................................................................................45
7.8Minimizing Power Consumption ..............................................................................47
8.1Internal Voltage Reference ......................................................................................54
8.2Watchdog Timer ......................................................................................................55
9.1Interrupt Vectors in ATmega16U4/ATmega32U4 ....................................................61
10.1Introduction ............................................................................................................65
10.2Ports as General Digital I/O ...................................................................................66
10.3Alternate Port Functions ........................................................................................70
10.4Register Description for I/O-Ports ..........................................................................82
12.1Internal Clock Source ............................................................................................89
12.2Prescaler Reset .....................................................................................................89
12.3External Clock Source ...........................................................................................89
12.4General Timer/Counter Control Register – GTCCR ..............................................90
13.1Overview ...............................................................................................................91
13.2Timer/Counter Clock Sources ...............................................................................92
13.3Counter Unit ..........................................................................................................92
13.4Output Compare Unit ............................................................................................93
13.5Compare Match Output Unit ..................................................................................95
13.6Modes of Operation ...............................................................................................96
13.7Timer/Counter Timing Diagrams .........................................................................100
7766F–AVR–11/10