ATXMEGA128A3-MH

更新时间： 2024-10-28 06:38:43

品牌	Logo	应用领域
爱特美尔 - ATMEL		微控制器
页数	文件大小	规格书
110页	3392K
描述
8/16-bit AVR XMEGA A3 Microcontroller

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数据手册

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ATXMEGA128A3-MH 数据手册

XMEGA A3

7.3

In-System Programmable Flash Program Memory

The XMEGA A3 devices contains On-chip In-System Programmable Flash memory for program

storage, see Figure 7-1 on page 10. Since all AVR instructions are 16- or 32-bits wide, each

Flash address location is 16 bits.

The Program Flash memory space is divided into Application and Boot sections. Both sections

have dedicated Lock Bits for setting restrictions on write or read/write operations. The Store Pro-

gram Memory (SPM) instruction must reside in the Boot Section when used to write to the Flash

memory.

A third section inside the Application section is referred to as the Application Table section which

has separate Lock bits for storage of write or read/write protection. The Application Table sec-

tion can be used for storing non-volatile data or application software.

Figure 7-1. Flash Program Memory (Hexadecimal address)

Word Address

Application Section

(256 KB/192 KB/128 KB/64 KB)

...

1EFFF

1F000

1FFFF

20000

20FFF

16FFF

17000

17FFF

18000

18FFF

EFFF

F000

77FF

7800

7FFF

8000

87FF

Application Table Section

(8 KB/8 KB/8 KB/4 KB)

FFFF

10000

10FFF

Boot Section

(8 KB/8 KB/8 KB/4 KB)

The Application Table Section and Boot Section can also be used for general application

software.

8068R–AVR–08/10

1...7 8 91011 12 13...110

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