ATmega32A datasheet(285/352 Pages) ATMEL

tên linh kiện	ATmega32A

Giải thích chi tiết về linh kiện	8-bit Microcontroller with 32K Bytes In-System Programmable Flash

PDF	352 Pages

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nhà sản xuất	ATMEL [ATMEL Corporation]

Trang chủ	http://www.atmel.com

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285 / 352 page

285

8155B–AVR–07/09

ATmega32A

Figure 26-12. State Machine Sequence for Changing the Instruction Word

26.10.2

AVR_RESET ($C)

The AVR specific public JTAG instruction for setting the AVR device in the Reset mode or taking

the device out from the Reset Mode. The TAP controller is not reset by this instruction. The one

bit Reset Register is selected as Data Register. Note that the Reset will be active as long as

there is a logic “one” in the Reset Chain. The output from this chain is not latched.

The active states are:

• Shift-DR: The Reset Register is shifted by the TCK input.

26.10.3

PROG_ENABLE ($4)

The AVR specific public JTAG instruction for enabling programming via the JTAG port. The 16-

bit Programming Enable Register is selected as Data Register. The active states are the

following:

• Shift-DR: The programming enable signature is shifted into the Data Register.

Test-Logic-Reset

Run-Test/Idle

Shift-DR

Exit1-DR

Pause-DR

Exit2-DR

Update-DR

Select-IR Scan

Capture-IR

Shift-IR

Exit1-IR

Pause-IR

Exit2-IR

Update-IR

Select-DR Scan

Capture-DR

ATmega32A bảng dữ liệu(PDF) 285 Page - ATMEL Corporation