A000046 Arduino, A000046 Datasheet - Page 442

• Manufacturer Part Number: A000046
• Description: MCU, MPU & DSP Development Tools Uno
• Manufacturer: Arduino
• Series: -r
• Type: MCUr

Specifications of A000046

• Processor To Be Evaluated: ATmega328
• Interface Type: USB, I2C, SPI
• Dimensions: 2.7 in x 2.1 in
• Operating Supply Voltage: 5 V
• Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ATmega328

8161D–AVR–10/09
9
10 System Control and Reset .................................................................... 46
11 Interrupts ................................................................................................ 57
12 External Interrupts ................................................................................. 70
Power Management and Sleep Modes ................................................. 39
8.7128 kHz Internal Oscillator ......................................................................................34
8.8External Clock .........................................................................................................34
8.9Clock Output Buffer .................................................................................................35
8.10Timer/Counter Oscillator .......................................................................................35
8.11System Clock Prescaler ........................................................................................35
8.12Register Description ..............................................................................................37
9.1Sleep Modes ...........................................................................................................39
9.2BOD Disable ............................................................................................................40
9.3Idle Mode .................................................................................................................40
9.4ADC Noise Reduction Mode ...................................................................................40
9.5Power-down Mode ..................................................................................................41
9.6Power-save Mode ...................................................................................................41
9.7Standby Mode .........................................................................................................41
9.8Extended Standby Mode .........................................................................................41
9.9Power Reduction Register .......................................................................................42
9.10Minimizing Power Consumption ............................................................................42
9.11Register Description ..............................................................................................44
10.1Resetting the AVR .................................................................................................46
10.2Reset Sources .......................................................................................................46
10.3Power-on Reset .....................................................................................................47
10.4External Reset .......................................................................................................48
10.5Brown-out Detection ..............................................................................................48
10.6Watchdog System Reset .......................................................................................49
10.7Internal Voltage Reference ....................................................................................49
10.8Watchdog Timer ....................................................................................................50
10.9Register Description ..............................................................................................54
11.1Interrupt Vectors in ATmega48PA .........................................................................57
11.2Interrupt Vectors in ATmega88PA .........................................................................59
11.3Interrupt Vectors in ATmega168PA .......................................................................62
11.4Interrupt Vectors in ATmega328P .........................................................................65
11.5Register Description ..............................................................................................68
ATmega48PA/88PA/168PA/328P
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