AT90USB647-MU Atmel, AT90USB647-MU Datasheet - Page 452

• 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

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452
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 3
Overview ................................................................................................... 4
About Code Examples ............................................................................. 9
AVR CPU Core ........................................................................................ 10
AVR AT90USB64/128 Memories ........................................................... 19
System Clock and Clock Options ......................................................... 39
Power Management and Sleep Modes ................................................. 51
1.1 Disclaimer ................................................................................................................4
2.1 Block Diagram .........................................................................................................5
2.2 Pin Descriptions .......................................................................................................7
4.1 Introduction ............................................................................................................10
4.2 Architectural Overview ...........................................................................................10
4.3 ALU – Arithmetic Logic Unit ...................................................................................11
4.4 Status Register ......................................................................................................12
4.5 General Purpose Register File ..............................................................................13
4.6 Stack Pointer .........................................................................................................14
4.7 Instruction Execution Timing .................................................................................15
4.8 Reset and Interrupt Handling .................................................................................16
5.1 In-System Reprogrammable Flash Program Memory ...........................................19
5.2 SRAM Data Memory ..............................................................................................20
5.3 EEPROM Data Memory ........................................................................................23
5.4 I/O Memory ............................................................................................................29
5.5 External Memory Interface ....................................................................................30
6.1 Clock Systems and their Distribution .....................................................................39
6.2 Clock Sources .......................................................................................................40
6.3 Low Power Crystal Oscillator .................................................................................41
6.4 Low Frequency Crystal Oscillator ..........................................................................43
6.5 Calibrated Internal RC Oscillator ...........................................................................44
6.6 External Clock .......................................................................................................45
6.7 Clock Output Buffer ...............................................................................................46
6.8 Timer/Counter Oscillator ........................................................................................46
6.9 System Clock Prescaler ........................................................................................47
6.10 PLL ......................................................................................................................48
AT90USB64/128
7593K–AVR–11/09