ATMEGA8U2-MU Atmel, ATMEGA8U2-MU Datasheet - Page 303

• Manufacturer Part Number: ATMEGA8U2-MU
• Description: MCU AVR 8K FLASH USB 32-VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8U2-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Processor Series: ATMEGA8x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: SPI, UART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, AT90USBKEY, ATEVK525
• Minimum Operating Temperature: - 40 C
• Package: 32QFN EP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 3.3|5 V
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details

ii
ATmega8U2/16U2/32U2
9
10 System Control and Reset .................................................................... 47
11 Interrupts ................................................................................................ 64
12 I/O-Ports .................................................................................................. 67
13 External Interrupts ................................................................................. 84
14 Timer/Counter0 and Timer/Counter1 Prescalers ................................ 88
Power Management and Sleep Modes ................................................. 42
8.8Clock Output Buffer .................................................................................................35
8.9System Clock Prescaler ..........................................................................................35
8.10PLL ........................................................................................................................36
8.11Register Description ..............................................................................................37
9.1Overview .................................................................................................................42
9.2Sleep Modes ...........................................................................................................42
9.3Idle Mode .................................................................................................................42
9.4Power-down Mode ..................................................................................................43
9.5Power-save Mode ...................................................................................................43
9.6Standby Mode .........................................................................................................43
9.7Extended Standby Mode .........................................................................................43
9.8Power Reduction Register .......................................................................................43
9.9Minimizing Power Consumption ..............................................................................44
9.10Register Description ..............................................................................................45
10.1Resetting the AVR .................................................................................................47
10.2Reset Sources .......................................................................................................47
10.3Internal Voltage Reference ....................................................................................51
10.4Watchdog Timer ....................................................................................................51
10.5Register Description ..............................................................................................55
11.1Overview ...............................................................................................................64
11.2Interrupt Vectors in ATmega8U2/16U2/32U2 ........................................................64
11.3Register Description ..............................................................................................65
12.1Overview ...............................................................................................................67
12.2Ports as General Digital I/O ...................................................................................68
12.3Alternate Port Functions ........................................................................................72
12.4Register Description for I/O-Ports ..........................................................................82
13.1Overview ...............................................................................................................84
13.2Register Description ..............................................................................................84
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