AT90USB647-MU Atmel, AT90USB647-MU Datasheet - Page 453

• Manufacturer Part Number: AT90USB647-MU
• Description: MCU, 8BIT, 64K FLASH, USB, 64QFN
• Manufacturer: Atmel

Specifications of AT90USB647-MU

• Controller Family/series: AT90
• No. Of I/o's: 48
• Eeprom Memory Size: 2KB
• Ram Memory Size: 4KB
• Cpu Speed: 16MHz
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 64KB
• Oscillator Type: External, Internal
• Package: 64QFN EP
• Device Core: AVR
• Family Name: AT90
• Maximum Speed: 20 MHz
• Ram Size: 4 KB
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 48
• Interface Type: SPI/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 4
• Lead Free Status / Rohs Status: Details

8
9
10 I/O-Ports .................................................................................................. 72
11 External Interrupts ................................................................................. 94
12 Timer/Counter0, Timer/Counter1, and Timer/Counter3 Prescalers ... 98
13 8-bit Timer/Counter0 with PWM .......................................................... 100
7593K–AVR–11/09
System Control and Reset .................................................................... 57
Interrupts ................................................................................................ 68
7.1 Idle Mode ...............................................................................................................52
7.2 ADC Noise Reduction Mode ..................................................................................52
7.3 Power-down Mode .................................................................................................52
7.4 Power-save Mode ..................................................................................................52
7.5 Standby Mode .......................................................................................................53
7.6 Extended Standby Mode .......................................................................................53
7.7 Power Reduction Register .....................................................................................54
7.8 Minimizing Power Consumption ............................................................................55
8.1 Resetting the AVR .................................................................................................57
8.2 Reset Sources .......................................................................................................57
8.3 Power-on Reset .....................................................................................................58
8.4 External Reset .......................................................................................................59
8.5 Brown-out Detection ..............................................................................................60
8.6 Watchdog Reset ....................................................................................................61
8.7 Internal Voltage Reference ....................................................................................62
8.8 Watchdog Timer ....................................................................................................63
9.1 Interrupt Vectors in AT90USB64/128 ....................................................................68
10.1 Introduction ..........................................................................................................72
10.2 Ports as General Digital I/O .................................................................................73
10.3 Alternate Port Functions ......................................................................................77
10.4 Register Description for I/O-Ports ........................................................................90
12.1 Internal Clock Source ..........................................................................................98
12.2 Prescaler Reset ...................................................................................................98
12.3 External Clock Source .........................................................................................98
12.4 General Timer/Counter Control Register – GTCCR ............................................99
13.1 Overview ............................................................................................................100
13.2 Timer/Counter Clock Sources ...........................................................................101
13.3 Counter Unit ......................................................................................................101
AT90USB64/128
453