ATMEGA2560 参数 Datasheet PDF下载

型号：	ATMEGA2560
PDF下载：	下载PDF文件查看货源
内容描述：	8位微控制器与256K字节的系统内可编程闪存 [8- BIT Microcontroller with 256K Bytes In-System Programmable Flash]
分类和应用：	闪存微控制器
文件页数/大小：	407 页 / 2985 K
品牌：	ATMEL [ ATMEL ]

Table 164. JTAG Programming Instruction

Set a = address high bits, b = address low bits, c = address extended bits, H = 0 - Low byte, 1 - High Byte, o = data out, i = data in, x =

don’t care

Instruction

TDI Sequence

TDO Sequence

Notes

1a. Chip Erase

0100011_10000000

0110001_10000000

0110011_10000000

xxxxxxx_xxxxxxxx

1b. Poll for Chip Erase Complete

2a. Enter Flash Write

0110011_10000000

0100011_00010000

0001011_cccccccc

0000111_aaaaaaaa

0000011_bbbbbbbb

0010011_iiiiiiii

xxxxxox_xxxxxxxx

xxxxxxx_xxxxxxxx

(2)

2b. Load Address Extended High Byte

2c. Load Address High Byte

2d. Load Address Low Byte

2e. Load Data Low Byte

2f. Load Data High Byte

2g. Latch Data

(10)

0010111_iiiiiiii

0110111_00000000

1110111_00000000

0110111_00000000

xxxxxxx_xxxxxxxx

(1)

2h. Write Flash Page

0110111_00000000

0110101_00000000

0110111_00000000

xxxxxxx_xxxxxxxx

2i. Poll for Page Write Complete

3a. Enter Flash Read

0110111_00000000

0100011_00000010

0001011_cccccccc

0000111_aaaaaaaa

0000011_bbbbbbbb

xxxxxox_xxxxxxxx

xxxxxxx_xxxxxxxx

(2)

3b. Load Address Extended High Byte

3c. Load Address High Byte

3d. Load Address Low Byte

3e. Read Data Low and High Byte

(10)

0110010_00000000

0110110_00000000

0110111_00000000

xxxxxxx_xxxxxxxx

xxxxxxx_oooooooo

Low byte

High byte

4a. Enter EEPROM Write

4b. Load Address High Byte

4c. Load Address Low Byte

4d. Load Data Byte

0100011_00010001

0000111_aaaaaaaa

0000011_bbbbbbbb

0010011_iiiiiiii

xxxxxxx_xxxxxxxx

(10)

4e. Latch Data

0110111_00000000

1110111_00000000

0110111_00000000

xxxxxxx_xxxxxxxx

(1)

4f. Write EEPROM Page

0110011_00000000

0110001_00000000

0110011_00000000

xxxxxxx_xxxxxxxx

4g. Poll for Page Write Complete

0110011_00000000

xxxxxox_xxxxxxxx

(2)

358

ATmega640/1280/1281/2560/2561

2549A–AVR–03/05

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ATMEGA2560 参数 Datasheet PDF下载

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