ATMEGA64L-8MI View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATMEGA64L-8MI

8-bit AVR® Microcontroller with 64K Bytes In-System Programmable Flash

Atmel Corporation 

AVR_RESET (0xC)

ATmega64(L)

Figure 149. State Machine Sequence for Changing the Instruction Word

1

Test-Logic-Reset

0

0

Run-Test/Idle 1

Select-DR Scan 1

Select-IR Scan 1

0

1 Capture-DR

0

1 Capture-IR

0

0

Shift-DR

0

Shift-IR

0

1

Exit1-DR

1

1

Exit1-IR

1

0

0

Pause-DR

0

Pause-IR

0

1

0

Exit2-DR

1

0

Exit2-IR

1

1

Update-DR

1

0

Update-IR

1

0

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.

2490G–AVR–03/04

313

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