Atmel AVR ISP Manuale utente

ISP

.............................................................................

User Guide

Table of Contents

Section 1

Introduction...........................................................................................1-1

1.1 Features....................................................................................................1-1

1.2 Device Support .........................................................................................1-2

Section 2

Getting Started......................................................................................2-1

2.1 Unpacking the System..............................................................................2-1

2.2 System Requirements...............................................................................2-1

Section 3

Hardware Description...........................................................................3-1

3.1 General Board Description........................................................................3-1

3.1.1 RS-232 Serial Interface......................................................................3-1

3.1.2 Control Section...................................................................................3-1

3.1.3 ISP Interface Cables...........................................................................3-2

3.2 AVRISP Power Requirements and Considerations ..................................3-2

3.3 Connecting AVRISP to Target Board........................................................3-2

3.4 Handling the ISP Lines .............................................................................3-3

3.4.1 VCC and GND....................................................................................3-3

3.4.2 SCK....................................................................................................3-3

3.4.3 MOSI/MISO/SCK................................................................................3-3

3.4.4 RESET................................................................................................3-4

Section 4

Software Front-end...............................................................................4-1

4.1 Installing AVR Studio ................................................................................4-1

4.2 Using AVR Studio .....................................................................................4-1

4.2.1 Starting the Windows Software ..........................................................4-1

4.2.2 Starting AVRISP Interface..................................................................4-1

4.2.3 Using AVRISP and STK500 Simultaneously......................................4-2

4.3 AVRISP User Interface .............................................................................4-2

4.3.1 “Program” Settings .............................................................................4-2

4.3.1.1 Device..........................................................................................4-3

4.3.1.2 Programming Mode......................................................................4-3

4.3.1.3 Flash ............................................................................................4-3

Table of Contents

4.3.1.4 EEPROM .....................................................................................4-3

4.3.2 "Fuses" Settings.................................................................................4-3

4.3.3 “Lock Bits”Settings.............................................................................4-5

4.3.4 “Advanced”Settings...........................................................................4-6

4.3.4.1 Signature Bytes............................................................................4-6

4.3.4.2 Oscillator Calibration Byte............................................................4-6

4.3.4.3 Reading Oscillator Calibration Byte .............................................4-6

4.3.4.4 Writing Oscillator Calibration Byte................................................4-6

4.3.5 “Board”Settings..................................................................................4-6

4.3.5.1 Oscillator......................................................................................4-7

4.3.5.2 Revision .......................................................................................4-7

4.3.6 "Auto" Settings....................................................................................4-7

4.3.6.1 Setting up the System for Auto Programming..............................4-8

4.3.6.2 Logging the Auto Programming to a File......................................4-8

4.3.7 History Window...................................................................................4-8

Section 5

Command Line Software......................................................................5-1

5.1 Parameters: ..............................................................................................5-1

5.1.1 Sample Usage....................................................................................5-3

Section 6

Special Considerations.........................................................................6-1

6.1 Fuse Programming ...................................................................................6-1

6.2 RESET Used as General IO Port..............................................................6-1

6.3 AVR Devices with no ISP Option..............................................................6-1

6.4 Devices without RC Oscillator Calibration ................................................6-1

Section 7

Troubleshooting Guide .........................................................................7-1

Section 8

Technical Specifications.......................................................................8-1

Section 9

Technical Support.................................................................................9-1

AVR®In System Programmer User Guide 1-1

Section 1

Introduction

Figure 1-1. AVRISP In-System Programmer

The AVR®In-System Programmer (AVRISP) from Atmel®is a professional low-cost In-

System Programmer covering all AVR 8-bit RISC Microcontrollers. The programmer

connects to a PC through a standard RS-232 serial interface and draws the necessary

power from the target board eliminating the need for an additional power supply.

AVR Studio®is used as front-end software, giving you a highly-integrated development

solution.

1.1 Features ■AVR Studio Interface

■ISP Programming of all AVR Devices

■Programs both Flash and EEPROM

■Supports Fuses and Lock Bit Programming

■Supports RC Oscillator Calibration

■Upgradeable to Support Future Devices

■Operates at Target Voltages from 2.7V to 5.5V

■Adjustable Speed –Supports all Target Boards Running at a Speed Higher than 8

kHz

■RS-232 Interface

■Powered from Target –No need for Additional Power Supply

Introduction

1-2 AVR®In System Programmer User Guide

The AVRISP is fully supported by AVR Studio version 3.5 or higher. For up to date infor-

mation on this and other AVR tool products please read the document “avrtools.pdf”.

LAtest version of AVR Studio (“avrtools.pdf”) and this user guide can be found in the

AVR section of the Atmel web site.

1.2 Device Support AVRISP supports all AVR 8-bit RISC Microcontrollers with ISP programming option.

Support for new devices will be added through new versions of AVR Studio.

AVR Studio will automatically prompt the user if it is detects that the firmware in the pro-

grammer is outdated.

The following devices are currently supported:

■ATtiny12

■ATtiny15

■ATtiny22

■AT90S1200

■AT90S2313

■AT90S/LS2323

■AT90S/LS2343

■AT90S/LS2333

■AT90S4414

■AT90S/LS4433

■AT90S/LS4434

■AT90S8515

■AT90S/LS8535

■ATmega161(L)

■ATmega16(L)

■ATmega163(L)

■ATmega32(L)

■ATmega323(L)

■ATmega103(L)

■ATmega128(L)

Information about supported devices in latest versions of the firmware can be found in

the AVR Studio Online Help System.

Note: For special programming considerations please see Section 6.

AVR®In System Programmer User Guide 2-1

Section 2

Getting Started

2.1 Unpacking the

System The AVRISP contains the following items:

■AVRISP Programmer

■AVRISP User Guide

■10-pin ISP Cable (Connected to AVRISP)

■6-pin ISP Cable

■9-pin RS-232 Cable

2.2 System

Requirements The minimum hardware and software requirements are:

■486 Processor (Pentium is recommended)

■16 MB of RAM

■15 MB of Free Hard Disk Space

■Windows®95/98/2000 and Windows NT®4.0

■115200 Baud RS-232 Port (COM Port)

Getting Started

2-2 AVR®In System Programmer User Guide

AVR®In System Programmer User Guide 3-1

Section 3

Hardware Description

3.1 General Board

Description A block diagram of the AVRISP is shown in Figure 3-1. The AVRISP can be divided in

three sections: The RS-232 interface, the Control section and the ISP cable. In this sec-

tion a brief overview of the different blocks will be given.

Figure 3-1. Simplified AVRISP Block Schematics

3.1.1 RS-232 Serial

Interface The AVRISP uses a standard female DSUB, RS-232 port for communication with the

front-end software (AVR Studio). It supports communication of 115200 baud.

3.1.2 Control Section The control MCU handles all communication between the target AVR and the front-end

software. The AVRISP is completely software controlled from AVR Studio. No manual

configuration of the ISP is needed.

A 3-color LED indicates the status of the AVRISP. During programming the LED is yel-

low. When the target AVR is successfully programmed, the LED will turn green. If

programming fails, the LED will turn red to indicate that programming (or verification)

CTRL

MCU

RxD

TxD

GND

VTG

RESET

SCK

MOSI

MISO

RS-232

Level VTG

VTG

GND

RxD

TxD

RS-232 Interface Control Section ISP Cable

Table 3-1. Status Led

Led Color Description

Red-Yellow-Green-Off-Green Cycle Power on Sequence

Yellow Busy –Programming

Red Programming Failed

Green Ready –OK

Hardware Description

3-2 AVR®In System Programmer User Guide

failed. If programming fails, check the “Troubleshooting Guide”on page Table 7-1. Dur-

ing start-up the status LED cycles through red, yellow to green to indicate that the

master MCU is ready.

3.1.3 ISP Interface Cables AVRISP supports both the 6-pin header connector pinout, used by the Atmel AT90ISP

cable, and the 10-pin header connector used by the STK200 and STK300 development

boards. Figure 3-2 shows the pinouts for the 6-pin and 10-pin ISP connectors.

AVRISP is delivered with one 6-wire and one 10-wire ISP cable. Use the one that match

the pinout of the target ISP connector. However, note that only one cable should be con-

nected, and used, at any given time. By default the 10-pin header connector is mounted.

Figure 3-2. AVRISP Connectors (Top View)

3.2 AVRISP Power

Requirements

and

Considerations

Since the AVRISP draws power from the target, it is important that the target board is

able to provide enough power to ensure correct operation. The AVRISP will draw maxi-

mum 50 mA @ 5.5V. The current is drawn through the VTG line. The target should thus

be able to supply at least this amount of power in addition to the requirements of the tar-

get board itself.

See “Technical Spesification”section on page 8-1 for information on power

consumption.

The AVRISP is not equipped with a power switch. Power is turned on when AVRISP is

connected to the target application and turned off when disconnected.

3.3 Connecting

AVRISPtoTarget

Board

The AVRISP connects to the target board through a 3 x 2 or 5 x 2 male header connec-

tor with 2.54 mm (0.1”) spacing (Figure 3-3). If there is a 6-pin or 10-pin ISP connector

on the target board, the cable on the AVRISP has to be changed accordingly.

The power of the target board should be turned off when connecting or disconnecting

the header connector. Hot-swapping is not supported and might damage the

programmer.

Table 3-2. VRISP Connector pinout

Signal 6-Pin 10-Pin I/O Description

VTG 2 2 –Power is delivered from the target board

GND 6 3,4,6, 8,10 –Ground

MOSI 4 1 Output Commands and data from AVRISP to target AVR

MISO 1 9 Input Data from target AVR to AVRISP

SCK 3 7 Output Serial Clock, Controlled by AVRISP

RESET 5 5 Output Reset. Controlled by AVRISP

MISO

SCK

RST

VTG

MOSI

GND

ISP6PIN

MOSI

MISO

RST

VTG

GND

ISP10PIN

GND

SCK

GND

Indice

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