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ATMEGA32U2-MU 用户编程技术手册 - ATMEL（爱特美尔）
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ATMEL（爱特美尔）
分类:
8位微控制器
封装:
VQFN-32
描述:
8 位 megaAVR 微控制器，带 USB 控制器，Atmel这些 megaAVR® 微控制器具有 USB 控制器，并且可以提供大量程序和数据内存，性能高达 20 MIPS。 所有 megaAVR 均提供自动编程功能，可实现快速、安全、经济实惠的在线升级。### AVR 微控制器，Atmel
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ATMEGA32U2-MU数据手册
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3
7799E–AVR–09/2012
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
RESET
VCC
GND
XTAL1
XTAL2
CONTROL
LINES
ANALOG
COMPARATOR
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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