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ATmega16U2 Datasheet(PDF) 3 Page - ATMEL Corporation

No. de pieza ATmega16U2
Descripción Electrónicos  8-bit Microcontroller with 8/16/32K Bytes of ISP Flash and USB Controller
Download  314 Pages
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Fabricante Electrónico  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega16U2 Datasheet(HTML) 3 Page - ATMEL Corporation

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3
7799B–AVR–07/09
ATmega8U2/16U2/32U2
2.
Overview
The ATmega8U2/16U2/32U2 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture.
By executing powerful instructions in a single clock cycle, the ATmega8U2/16U2/32U2 achieves throughputs approaching
1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.
2.1
Block Diagram
Figure 2-1.
Block Diagram
The AVR core combines a rich instruction set with 32 general purpose working registers. All the
32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent
registers to be accessed in one single instruction executed in one clock cycle. The resulting
PROGRAM
COUNTER
STACK
POINTER
PROGRAM
FLASH
MCU CONTROL
REGISTER
SRAM
GENERAL
PURPOSE
REGISTERS
INSTRUCTION
REGISTER
TIMER/
COUNTERS
INSTRUCTION
DECODER
DATA DIR.
REG. PORTC
DATA REGISTER
PORTC
INTERRUPT
UNIT
EEPROM
USART1
STATUS
REGISTER
Z
Y
X
ALU
PORTC DRIVERS
PORTD DRIVERS
PORTB DRIVERS
PC7 - PC0
PD7 - PD0
VCC
GND
CONTROL
LINES
PB7 - PB0
D+/SCK
D-/SDATA
INTERNAL
OSCILLATOR
WATCHDOG
TIMER
8-BIT DA TA BUS
USB
PS/2
TIMING AND
CONTROL
OSCILLATOR
CALIB. OSC
DATA DIR.
REG. PORTB
DATA REGISTER
PORTB
ON-CHIP DEBUG
Debug-Wire
PROGRAMMING
LOGIC
DATA DIR.
REG. PORTD
DATA REGISTER
PORTD
POR - BOD
RESET
PLL
SPI
ON-CHIP
3.3V
REGULATOR
UVcc
UCap
1uF


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