AT90USB82 데이터 시트보기 (PDF) - Unspecified

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AT90USB82

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

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2. Overview

The AT90USB82/162 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By exe-

cuting powerful instructions in a single clock cycle, the AT90USB82/162 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

PD7 - PD0

PC7 - PC0

PB7 - PB0

PORTD DRIVERS

PORTC DRIVERS

PORTB DRIVERS

VCC

GND

DATA REGISTER

PORTD

DATA DIR.

REG. PORTD

DATA REGISTER

PORTC

DATA DIR.

REG. PORTC

DATA REGISTER

PORTB

8-BIT DA TA BUS

DATA DIR.

REG. PORTB

Debug-Wire

POR - BOD

RESET

PROGRAM

COUNTER

STACK

POINTER

INTERNAL

OSCILLATOR

WATCHDOG

TIMER

CALIB. OSC

OSCILLATOR

ON-CHIP DEBUG

PROGRAM

FLASH

SRAM

MCU CONTROL

REGISTER

TIMING AND

CONTROL

PROGRAMMING

LOGIC

INSTRUCTION

REGISTER

INSTRUCTION

DECODER

CONTROL

LINES

USART1

SPI

GENERAL

PURPOSE

REGISTERS

X

Y

Z

ALU

STATUS

REGISTER

TIMER/

COUNTERS

INTERRUPT

UNIT

EEPROM

PLL

USB

PS/2

ON-CHIP

3.3V

REGULATOR

UVcc

UCap

1uF

D+/SCK

D-/SDATA

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

4 AT90USB82/162

7707F–AVR–11/10

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