AT90USB647(2006) データシートの表示（PDF） - Atmel Corporation

部品番号

コンポーネント説明

メーカー

AT90USB647
(Rev.:2006)

8-bit Microcontroller with 64/128K Bytes of ISP Flash and USB Controller

Atmel Corporation 

AT90USB64/128

5. AVR AT90USB64/128 Memories

This section describes the different memories in the AT90USB64/128. The AVR architecture has

two main memory spaces, the Data Memory and the Program Memory space. In addition, the

AT90USB64/128 features an EEPROM Memory for data storage. All three memory spaces are

linear and regular.

Table 5-1.

Memory

Flash

Memory Mapping.

Mnemonic

Size

Flash size

Start Address

-

End Address

Flash end

32

Registers

I/O

Registers

Ext I/O

Registers

Internal

SRAM

External

Memory

EEPROM

Size

Start Address

End Address

Size

Start Address

End Address

Size

Start Address

End Address

Size

Start Address

End Address

Size

Start Address

End Address

Size

Start Address

End Address

-

-

-

-

-

-

-

-

-

ISRAM size

ISRAM start

ISRAM end

XMem size

XMem start

XMem end

E2 size

-

E2 end

Notes: 1. Byte address.

2. Word (16-bit) address.

AT90USB64

64 K bytes

0x00000

0x0FFFF(1)

0x7FFF(2)

32 bytes

0x0000

0x001F

64 bytes

0x0020

0x005F

160 bytes

0x0060

0x00FF

4 K bytes

0x0100

0x10FF

0-64 K bytes

0x1100

0xFFFF

2 K bytes

0x0000

0x07FF

AT90USB128

128K bytes

0x1FFFF(1)

0xFFFF(2)

8 K bytes

0x20FF

0x2100

4K bytes

0x0FFF

5.1 In-System Reprogrammable Flash Program Memory

The AT90USB64/128 contains 128K bytes On-chip In-System Reprogrammable Flash memory

for program storage. Since all AVR instructions are 16 or 32 bits wide, the Flash is organized as

64K 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 100,000 write/erase cycles. The

AT90USB64/128 Program Counter (PC) is 16 bits wide, thus addressing the 128K program

19

7593D–AVR–07/06

Share Link: