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參數(shù)資料
| 型號(hào)： | MR80C154-L16/883R |
| 廠(chǎng)商： | ATMEL CORP |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, 16 MHz, MICROCONTROLLER, CQCC44 |
| 封裝： | LCC-44 |
| 文件頁(yè)數(shù)： | 2/14頁(yè) |
| 文件大小： | 61013K |
| 代理商： | MR80C154-L16/883R |
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ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
7.
AVR CPU core
7.1
Introduction
This section discusses the AVR core architecture in general. The main function of the CPU core is to ensure cor-
rect program execution. The CPU must therefore be able to access memories, perform calculations, control
peripherals, and handle interrupts.
7.2
Architectural overview
Figure 7-1.
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 instruction 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.
The fast-access Register File contains 32 × 8-bit general purpose working registers with a single clock cycle
access time. This allows single-cycle Arithmetic Logic Unit (ALU) operation. In a typical ALU operation, two oper-
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MQ83C154CXXX-L16P883R | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQFP44 |
| MR83C154CXXX-20P883R | 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQCC44 |
| MR83C154TXXX-20/883D | 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQCC44 |
| MQ83C154TXXX-L16/883D | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, CQFP44 |
| MQ80C154-25/883R | 8-BIT, 25 MHz, MICROCONTROLLER, CQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MR80C31BH | 制造商:ROCHESTER 制造商全稱(chēng):ROCHESTER 功能描述:CMOS SINGLE - CHIP 8-BIT MICROCOMPUTER 64K program Memory Space |
| MR80C31BH/B | 制造商:n/a 功能描述:8506401XA |
| MR80C31BHB | 制造商:n/a 功能描述:8506401XA |
| MR80C32-16 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:8-Bit Microcontroller |
| MR80C32-20 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:8-Bit Microcontroller |
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