參數(shù)資料
型號(hào): ATMEGA645V-8MI
廠商: Atmel
文件頁數(shù): 10/85頁
文件大?。?/td> 0K
描述: IC AVR MCU FLASH 64K 1.8V 64QFN
產(chǎn)品培訓(xùn)模塊: megaAVR Introduction
標(biāo)準(zhǔn)包裝: 260
系列: AVR® ATmega
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: SPI,UART/USART,USI
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 53
程序存儲(chǔ)器容量: 64KB(32K x 16)
程序存儲(chǔ)器類型: 閃存
EEPROM 大?。?/td> 2K x 8
RAM 容量: 4K x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-VFQFN 裸露焊盤
包裝: 托盤
18
2570N–AVR–05/11
ATmega325/3250/645/6450
8.
AVR Memories
This section describes the different memories in the Atmel ATmega325/3250/645/6450. The
AVR architecture has two main memory spaces, the Data Memory and the Program Memory
space. In addition, the Atmel ATmega325/3250/645/6450 features an EEPROM Memory for
data storage. All three memory spaces are linear.
8.1
In-System Reprogrammable Flash Program Memory
The Atmel ATmega325/3250/645/6450 contains 32/64K bytes On-chip In-System Reprogram-
mable Flash memory for program storage. Since all AVR instructions are 16 or 32 bits wide, the
Flash is organized as 16/32K x 16. For software security, the Flash Program memory space is
divided into two sections, Boot Program section and Application Program section.
The Flash memory has an endurance of at least 10,000 write/erase cycles. The Atmel
ATmega325/3250/645/6450 Program Counter (PC) is 14/15 bits wide, thus addressing the
16/32K program memory locations. The operation of Boot Program section and associated Boot
Lock bits for software protection are described in detail in “Boot Loader Support – Read-While-
description on Flash data serial downloading using the SPI pins or the JTAG interface.
Constant tables can be allocated within the entire program memory address space (see the LPM
– Load Program Memory instruction description).
Timing diagrams for instruction fetch and execution are presented in “Instruction Execution Tim-
Figure 8-1.
Program Memory Map
0x0000
0x3FFF/0x7FFF
Program Memory
Application Flash Section
Boot Flash Section
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ATMEGA645V-8MUR 功能描述:8位微控制器 -MCU AVR 64KB FLSH 2KB EE 4KB SRAM-8MHz, IND RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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