11
8018P–AVR–08/10
ATmega169P
6.
AVR CPU Core
6.1
Introduction
This section discusses the AVR core architecture in general. The main function of the CPU core
is to ensure correct program execution. The CPU must therefore be able to access memories,
perform calculations, control peripherals, and handle interrupts.
6.2
Architectural Overview
Figure 6-1.
Block Diagram of the AVR Architecture
In order to maximize performance and parallelism, the AVR uses a Harvard architecture – with
separate memories and buses for program and data. Instructions in the program memory are
executed with a single level pipelining. While one instruction is being executed, the next instruc-
tion is pre-fetched from the program memory. This concept enables instructions to be executed
in every clock cycle. The program memory is In-System Reprogrammable Flash memory.
Flash
Program
Memory
Instruction
Register
Instruction
Decoder
Program
Counter
Control Lines
32 x 8
General
Purpose
Registrers
ALU
Status
and Control
I/O Lines
EEPROM
Data Bus 8-bit
Data
SRAM
Direct
Addressing
Indirect
Addressing
Interrupt
Unit
SPI
Unit
Watchdog
Timer
Analog
Comparator
I/O Module 2
I/O Module1
I/O Module n
相关PDF资料
ATMEGA169P-16MCU MCU AVR 16K ISP FLSH 16MHZ 64QFN
AT91SAM7XC256-CU MCU ARM 256K HS FLASH 100-TFBGA
PIC16LF874A-I/P IC MCU FLASH 4KX14 EE A/D 40DIP
PIC16F84-10/SO IC MCU FLASH 1KX14 EE 18SOIC
AT91SAM7XC128-CU MCU ARM 128K HS FLASH 100-TFBGA
PIC18F2458-I/SO IC PIC MCU FLASH 12KX16 28SOIC
PIC18F4455-I/P IC PIC MCU FLASH 12KX16 40DIP
AT91SAM7X256-CU MCU ARM 256K HS FLASH 100-TFBGA
相关代理商/技术参数
ATMEGA169PV-8MU 功能描述:8位微控制器 -MCU AVR 16K FLASH 512B EE 1K SRAM 5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ATMEGA169PV-8MU SL383 制造商:Atmel Corporation 功能描述:MCU 8BIT ATMEGA RISC 16KB FLASH 2.5V/3.3V/5V 64PIN MLF - Tape and Reel
ATMEGA169PV-8MU 制造商:Atmel Corporation 功能描述:IC 8BIT MCU AVR MEGA 8MHZ 64-QFN
ATMEGA169PV-8MUR 功能描述:8位微控制器 -MCU AVR LCD 16KB FLSH EE 512B 1KB SRAM-8MHZ RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ATMEGA169V 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 16K Bytes In-System Programmable Flash
ATMEGA169V_06 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 16K Bytes In-System Programmable Flash
ATMEGA169V-1AC 功能描述:IC MCU 8BIT 16KB FLASH 64TQFP 制造商:microchip technology 系列:AVR? ATmega 包装:托盘 零件状态:停產 核心处理器:AVR 核心尺寸:8-位 速度:1MHz 连接性:SPI,UART/USART,USI 外设:欠压检测/复位,LCD,POR,PWM,WDT I/O 数:53 程序存储容量:16KB(8K x 16) 程序存储器类型:闪存 EEPROM 容量:512 x 8 RAM 容量:1K x 8 电压 - 电源(Vcc/Vdd):1.8 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器类型:内部 工作温度:0°C ~ 70°C 封装/外壳:64-TQFP 供应商器件封装:64-TQFP(14x14) 基本零件编号:ATmega169 标准包装:160
ATMEGA169V-1AI 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit AVR Microcontroller with 16K Bytes In-System Programmable Flash