参数资料
型号: EP20K100BC324-3
厂商: ALTERA CORP
元件分类: PLD
英文描述: LOADABLE PLD, PBGA324
文件页数: 3/68页
文件大小: 975K
代理商: EP20K100BC324-3
11
4317K–AVR–03/2013
AT90PWM2/3/2B/3B
5.
AVR CPU Core
5.1
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.
5.2
Architectural Overview
Figure 5-1.
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
PDF描述
EP20K100BI324-1 LOADABLE PLD, PBGA324
EP20K100BI324-2 LOADABLE PLD, PBGA324
EP20K100BI324-3 LOADABLE PLD, PBGA324
EP20K100BC484-1 LOADABLE PLD, PBGA484
EP20K100BC484-2 LOADABLE PLD, PBGA484
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