ATSTK505 datasheet, PDF - EEWORLD Datasheet

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ATSTK505: DescriptionADAPTER KIT FOR 14PIN AVR MCU; CategoryDevelopment board/suite/development tools; File Size158KB，11 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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ATSTK505 Overview

ADAPTER KIT FOR 14PIN AVR MCU

ATSTK505 Parametric

Parameter Name	Attribute value
Accessory type	STK500 expansion module
Supporting products/related products	14-pin and 20-pin ATtiny AVR devices

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Table of Contents

TABLE OF CONTENTS

.................................................................... 1

STK505 USER GUIDE ......................................................................................... 2

Introduction

.............................................................................................. 2

Features

.........................................................................................................................2

Getting Started

.................................................................................. 3

Hardware Overview

.........................................................................................3

ZIF socket

...................................................................................................................................3

DIP socket

..................................................................................................................................3

Low voltage programming connectors

................................................................3

High voltage programming connectors

...............................................................3

Port configuration switches

..........................................................................................3

Crystal sockets

.......................................................................................................................3

Mounting the STK505

....................................................................................4

Clock Sources and Reset

.............................................. 5

The Clock Switch

................................................................................................5

The Reset/PORTB Switch ............................................................................................. 5

Programming the AVR

........................................................ 6

Introduction

.................................................................................................................6

In-System programming

.............................................................................6

High Voltage Programming

....................................................................7

High Voltage Programming the ATtiny24

.........................................................7

High Voltage Programming the ATtiny26..................................................................................8

Troubleshooting Guide

..................................................... 10

Programming problems

.............................................................................10

General problems ........................................................................................................ 11

STK505 User Guide

Introduction

The STK505 board is a top module to the STK500 development board from

Atmel Corporation. It adds support for the 14-pin and 20-pin AVR

microcontrollers listed in the feature list below.

STK505 includes connectors and hardware allowing full utilization of the features

of these devices.

This user guide is a general getting started guide as well as a complete technical

reference for advanced users.

Included in the kit is samples of ATtiny24 and ATtiny26.

Figure 1-1: The STK505 starter kit

Features

•

Supports the ATtiny24 and ATtiny26

Supported by AVR Studio 4

Zero Insertion Force (ZIF) socket for 14-pin SOIC packages

DIP socket for 20-pin PDIP packages

Supports High Voltage Programming through STK500

Supports Low Voltage programming through STK500

Switch to select between different clock sources

Switch to select between reset and I/O functionality for the reset pin

On board crystal sockets

Getting Started

This section describes how to connect the STK505 onto the STK500, and

connect cables to different peripherals.

Hardware Overview

The STK505 is divided into two colored sections: the green section that supports

the ATtiny24 and the blue section that supports the ATtiny26.

Note: Only one AVR device should be inserted in the sockets at a time.

ZIF socket

The ZIF socket is for the ATtiny24, in soic package.

Pin1 on the socket is indicated with the white triangle beside the lower right

corner.

DIP socket

The DIP socket is for the ATtiny26.

Pin1 on the socket is indicated with the white triangle beside the lower right

corner.

Low voltage programming connectors

The AVR can be programmed in serial mode by using a 6-pin cable between the

ISP6PIN on the STK500 and the SPROG headers on the stk505.

High voltage programming connectors

The ATtiny26 can be programmed in parallel high voltage mode by using 10-pin

cables between STK500 and STK505.

The ATtiny24 can be programmed in serial high voltage mode be using 10-pin

cables between STK500 and STK505.

Port configuration switches

The XTAL1, XTAL2 and the reset pin on both ATtiny24 and ATtiny26 can also be

used as regular I/O port pins when not used as clock inputs or reset.

The pin configuration switches connects the pins to different components/signals

dependant on their usage.

This is described in more detail in the chapter Clock Sources and Reset

Crystal sockets

The clock crystal sockets are placed close to each target socket to make it

possible to use high frequency crystals.

When crystals are used to generate the target clock signal the clock selection

switch must be in position "XTAL".

Mounting the STK505

The first thing you should do is to mount the STK505 onto the STK500.

1. Turn off the power on STK500.

2. Remove any other top card from the STK500.

3. Remove any AVR mounted in any of the sockets on the STK500.

4. Place the STK505 on top of the STK500. Make sure the EXPAND0 and

EXPAND1 connectors on both cards align properly.

Clock Sources and Reset

The Clock Switch

The STK505 has support to easily configure the hardware to support three

different clock configurations

•

External Clock

On board crystal

Internal Oscillator

The XTAL1 and XTAL2 pins are configured as regular I/O port pins when not

used as clock input/output.

The clock selection switch is used to connect the pins to different components

dependant on whether it is used as clock pins or I/O pins.

Note: The device fuses must be programmed to use the selected clock source.

See the device datasheet for more details.

Position Function

XTAL

XTAL1 and XTAL2 pins connected to the XTAL

socket

EXT CLK XTAL1 pin connected to the STK500 clock source

XTAL2 pin connected to PORTB header

INT RC

XTAL1 and XTAL2 pins connected to the PORTB

header

The Reset/PORTB Switch

The RESET/PORTB switch connects the reset pin to either the reset signal from

STK500, or to the PORTB header on STK500 to make it accessible for use as a

regular I/O pin.

Note: The RSTDISBL fuse must be programmed to disable reset functionality

and use the pin as a regular I/O port pin. Se the device datasheet for further

details.

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