Atmel AVR ISP User Manual

Software Front-end
AVR
®
In System Programmer User Guide 4-7
Figure 4-6. Board Settings
4.3.5.1 Oscillator The AVRISP programmer uses a programmable oscillator circuit that offers a wide
range of frequencies for the target device.
The frequency given here should be lower or equal to the frequency of the target AVR to
be programmed. Based on this number, the AVRISP User Interface calculates the com-
munication speed between the AVRISP and the target AVR.
Note that the drop-down list only have a few selectable frequencies. For any other fre-
quency, write it in the input field and press “Write Osc”. The frequency will then be set to
the closest attainable and displayed in the field.
4.3.5.2 Revision In the revision box the current revision AVRISP revision number is shown. If AVR Studio
discovers that the AVRISP contains an older version than the one distributed with AVR
Studio, it will automatically ask for permission to upgrade the Programmer.
4.3.6 "Auto" Settings When programming multiple devices with the same code, the Auto tab offers a powerful
method of automatically going through a user-defined sequence of commands. The
commands are listed in the order they are executed (if selected). To enable a command,
the appropriate check box should be checked (e.g., if only “Program FLASH” is
checked, by pressing the “Start” button the FLASH memory will be programmed with the
HEX file specified in the “Program” settings). All commands depend on, and use, the
settings given in the AVRISP User Interface. It is possible to log the command execution
to a text file by checking the “Log to file” check box.

Atmel AVR ISP Specifications

General

Brand	Atmel
Model	AVR ISP
Category	Computer Hardware
Language	English

Summary

Section 1 Introduction

1.1 Features

Lists key capabilities of the AVRISP programmer, including software integration and target voltage support.

1.2 Device Support

Details the AVR 8-bit RISC Microcontrollers supported by AVRISP and how new devices are added.

Section 2 Getting Started

2.1 Unpacking the System

Lists the items included in the AVRISP package, such as the programmer and cables.

2.2 System Requirements

Specifies the minimum hardware and software requirements for using the AVRISP.

Section 3 Hardware Description

3.1 General Board Description

Provides an overview of the AVRISP's block diagram, including RS-232, Control, and ISP sections.

3.2 AVRISP Power Requirements and Considerations

Explains the power draw of AVRISP from the target board and its limitations.

3.3 Connecting AVRISP to Target Board

Details how to connect the AVRISP to a target board and precautions for hot-swapping.

3.4 Handling the ISP Lines

Offers tips for connecting ISP lines, including VCC, GND, SCK, MOSI/MISO, and RESET pins.

Section 4 Software Front-end

4.1 Installing AVR Studio

Guides the user through the installation process of AVR Studio, the IDE for AVRISP.

4.2 Using AVR Studio

Assumes user familiarity with AVR Studio and points to its help system for general use.

4.3 AVRISP User Interface

Introduces the AVRISP User Interface, divided into six selectable groups for programming options.

Section 5 Command Line Software

5.1 Parameters

Describes the available parameters for using the AVRISP command-line software.

Section 6 Special Considerations

6.1 Fuse Programming

Discusses specific considerations related to programming fuses for AVR devices.

6.2 RESET Used as General IO Port

Explains how the RESET pin can be used as a general I/O port in certain configurations.

6.3 AVR Devices with no ISP Option

Covers considerations for programming AVR devices that lack an ISP option.

6.4 Devices without RC Oscillator Calibration

Addresses special handling for devices that do not support RC oscillator calibration.

Section 7 Troubleshooting Guide

Section 8 Technical Specifications

Section 9 Technical Support