Datasheet 搜索 > 微控制器 > ATMEL（爱特美尔） > ATMEGA32U2-AU 数据手册 > ATMEGA32U2-AU 用户编程技术手册 4/24 页
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ATMEGA32U2-AU 用户编程技术手册 - ATMEL（爱特美尔）
制造商:
ATMEL（爱特美尔）
分类:
微控制器
封装:
TQFP-32
描述:
ATMEL ATMEGA32U2-AU 芯片, 8位微控制器, AVR, 32K闪存, USB, 32TQFP
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ATMEGA32U2-AU数据手册
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4
7766GS–AVR–02/2014
ATmega16/32U4
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
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-
PROGRAM
COUNTER
STACK
POINTER
PROGRAM
FLASH
MCU CONTROL
REGISTER
GENERAL
PURPOSE
REGISTERS
INSTRUCTION
REGISTER
TIMERS/
COUNTERS
INSTRUCTION
DECODER
DATA DIR.
REG. PORTB
DATA DIR.
REG. PORTE
DATA DIR.
REG. PORTD
DATA REGISTER
PORTB
DATA REGISTER
PORTE
DATA REGISTER
PORTD
INTERRUPT
UNIT
EEPROM
SPI
STATUS
REGISTER
SRAM
USART1
Z
Y
X
ALU
PORTB DRIVERS
PORTE DRIVERS
PORTF DRIVERS
PORTD DRIVERS
PORTC DRIVERS
PB7 - PB0
PE6
PF7 - PF4
RESET
VCC
GND
XTAL1
XTAL2
CONTROL
LINES
PC7
INTERNAL
OSCILLATOR
WATCHDOG
TIMER
8-BIT DA TA BUS
USB 2.0
TIMING AND
CONTROL
OSCILLATOR
CALIB. OSC
DATA DIR.
REG. PORTC
DATA REGISTER
PORTC
ON-CHIP DEBUG
JTAG TAP
PROGRAMMING
LOGIC
BOUNDARY-
SCAN
DATA DIR.
REG. PORTF
DATA REGISTER
PORTF
POR - BOD
RESET
PD7 - PD0
TWO-WIRE SERIAL
INTERFACE
PLL
HIGH SPEED
TIMER/PWM
PE2
PC6PF1
PF0
ON-CHIP
USB PAD 3V
REGULATOR
UVcc
UCap
1uF
ANALOG
COMPARATOR
VBUS
DP
DM
ADC
AGND
AREF
AVCC
TEMPERATURE
SENSOR
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