ATMEGA16U4(2008) 데이터 시트보기 (PDF) - Atmel Corporation

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ATMEGA16U4
(Rev.:2008)

8-bit Microcontroller with 16/32K Bytes of ISP Flash and USB Controller

Atmel Corporation 

2.1 Block Diagram

Figure 2-1. Block Diagram

PF7 - PF4

PF1 PF0

VCC

GND

PORTF DRIVERS

DATA REGISTER

PORTF

DATA DIR.

REG. PORTF

POR - BOD

RESET

AVCC

AGND

AREF

JTAG TAP

PROGRAM

COUNTER

ON-CHIP DEBUG

PROGRAM

FLASH

BOUNDARY-

SCAN

INSTRUCTION

REGISTER

PROGRAMMING

LOGIC

INSTRUCTION

DECODER

TEMPERATURE

SENSOR

CONTROL

LINES

ADC

ANALOG

COMPARATOR

USART0

STACK

POINTER

SRAM

GENERAL

PURPOSE

REGISTERS

X

Y

Z

ALU

STATUS

REGISTER

PC7 PC6

PORTC DRIVERS

DATA REGISTER

PORTC

8-BIT DA TA BUS

DATA DIR.

REG. PORTC

INTERNAL

OSCILLATOR

WATCHDOG

TIMER

MCU CONTROL

REGISTER

TIMERS/

COUNTERS

INTERRUPT

UNIT

EEPROM

HIGH SPEED

TIMER/PWM

SPI

CALIB. OSC

OSCILLATOR

TIMING AND

CONTROL

PLL

ON-CHIP

USB PAD 3V

REGULATOR

USB 2.0

TWO-WIRE SERIAL

INTERFACE

UVcc

UCap

1uF

VBUS

DP

DM

DATA REGISTER

PORTE

DATA DIR.

REG. PORTE

DATA REGISTER

PORTB

DATA DIR.

REG. PORTB

DATA REGISTER

PORTD

DATA DIR.

REG. PORTD

PORTE DRIVERS

PORTB DRIVERS

PORTD DRIVERS

PE6

PE2

PB7 - PB0

PD7 - PD0

- Subject to changes -

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

architecture is more code efficient while achieving throughputs up to ten times faster than con-

ventional CISC microcontrollers.

The ATmega16U4/ATmega32U4 provides the following features: 16/32K bytes of In-System

Programmable Flash with Read-While-Write capabilities, 512Bytes/1K bytes EEPROM,

1.25/2.5K bytes SRAM, 26 general purpose I/O lines (CMOS outputs and LVTTL inputs), 32

general purpose working registers, four flexible Timer/Counters with compare modes and PWM,

one more high-speed Timer/Counter with compare modes and PLL adjustable source, one

USART (including CTS/RTS flow control signals), a byte oriented 2-wire Serial Interface, a 12-

4 ATmega16U4/ATmega32U4

7766BS–AVR–07/08

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