AT90USB646-MUR Atmel, AT90USB646-MUR Datasheet - Page 452
![MCU AVR 64K FLASH 16MHZ 64QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
AT90USB646-MUR
Manufacturer Part Number
AT90USB646-MUR
Description
MCU AVR 64K FLASH 16MHZ 64QFN
Manufacturer
Atmel
Series
AVR® 90USBr
Datasheet
1.AT90USB646-MU.pdf
(461 pages)
Specifications of AT90USB646-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART, USB, USB OTG
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
48
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VQFN Exposed Pad, 64-HVQFN, 64-SQFN, 64-DHVQFN
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
SPI, UART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
48
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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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
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