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參數(shù)資料
| 型號(hào)： | MR80C32-20/883:D |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, 20 MHz, MICROCONTROLLER, CQCC44 |
| 封裝： | LCC-44 |
| 文件頁(yè)數(shù)： | 101/103頁(yè) |
| 文件大?。?/td> | 25028K |
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19
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
8.
AVR memories
8.1
Overview
T h is se ction d escr ib es the d if fere nt me mo rie s in the A tm el
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P. The AVR architecture has two
main memory spaces, the Data Memory and the Program Memory space. In addition, the
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P features an EEPROM Memory for
data storage. All three memory spaces are linear and regular.
8.2
In-System Reprogrammable Flash Program Memory
The ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P contains 16/32/64/128Kbytes
On-chip In-System Reprogrammable Flash memory for program storage. Since all AVR instruc-
tions are 16 or 32 bits wide, the Flash is organized as 32/64 x 16. For software security, the
Flash Program memory space is divided into two sections, Boot Program section and Applica-
tion Program section.
The F lash memory has an endurance of at least 10,000 write/erase cycles. The
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P Program Counter (PC) is 15/16
bits wide, thus addressing the 32/64K program memory locations. The operation of Boot Pro-
gram section and associated Boot Lock bits for software protection are described in detail in
”Memory programming” on page 298. ”Memory programming” on page 298 contains a detailed
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-
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MR80C32-36:RD | 8-BIT, 36 MHz, MICROCONTROLLER, CQCC44 |
| MQ80C32E-30/883:RD | 8-BIT, 30 MHz, MICROCONTROLLER, CQFP44 |
| MC80C32E-36/883 | 8-BIT, 36 MHz, MICROCONTROLLER, CDIP40 |
| MC80C52TXXX-36/883:D | 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CDIP40 |
| MD80C52TXXX-30SHXXX:D | 8-BIT, MROM, 30 MHz, MICROCONTROLLER, CDIP40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MR80C32-25 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| MR80C32-30 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| MR80C32-36 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| MR80C51BH | 制造商:ROCHESTER 制造商全稱:ROCHESTER 功能描述:CMOS SINGLE - CHIP 8-BIT MICROCOMPUTER 64K program Memory Space |
| MR80C86 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor |
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