Stk300 Megaavr Starter Kit Manual 3s2c57

STK300 megaAVR Starter Kit Manual

ATMEL Corporation 2325 Orchard Parkway San Jose, CA 95131

Section 1 Introduction Welcome to the megaAVR® Starter kit. This system incorporates an applications board and in-system programming hardware key, for programming AVR devices in your application. Be sure to check the REE.TXT file included with the software for installation information.

1.1

Device

The system software currently has for the following devices. n ATmega603 n

ATmega603L

n

ATmega103

n

ATmega103L

Software upgrades for new devices will be available in the AVR section of the Atmel website, which is located at http://www.atmel.com.

1

Section 2 Getting Started

2.1

2.2

Unpacking the System

System Requirements

Contents of box: n Evaluation Board n

Disk set consisting of AVR ISP software and STK300 Application Builder

n

In-System Programming (ISP) Dongle

n

ISP Ribbon Cable

The minimum hardware and software requirements are: n 80386 Processor or Above n

1MB Ram

n

1MB Free Hard Disk Space

n

Windows 3.1 or Windows 95

2

Section 3 Connecting The System

CONNECT LEAD SUPPLIED TO DONGLE AND INSERT IN PC PRINTER PORT

PLUG HEADER ON LEAD INTO PROGRAMMING INTERFACE - KEY WAY GIVES ORIENTATION

POWER SUPPLY 9 - 15V DC 7 - 12V AC POWER CONNECTOR 5.5/2.1 BARREL

ON-OFF SWITCH

RS 232 CONNECTOR NOT USED FOR PROGRAMMING

A Power Supply is required with a standard 2.1mm barrel connector. It can be AC 7 12V or DC 9 - 15V. The connector is inserted into the power connection socket as shown, above. The programming lead supplied is fitted into the Dongle case and the other end is inserted into the programming interface on the board as shown. The Dongle case is connected to one of the printer ports on the PC. If this is not LPT1, then you will need to change the printer port setting in the software—see software section for details.

3

Section 4 Hardware Description The main features of the board are shown in the diagram below.

Note:

There are a number of jumpers on the board which are used to select different operations and voltages. The default jumper settings are for programming operations at 5V JP1 Closed, with brown-out also set to 5V JP2 Open. To carry out other operations, some jumpers may have to be removed—refer to the relevant section for details. A full list of the jumpers and links are given in the table below.

4

Hardware Description

4.1

4.2

Jumpers, Links and their Functions

External Connections

Jumper

Function

Open

Closed

Default

JP1

Voltage select

5V

3.3V

Open

JP2

Brown out select

2.9V

4.5V

Closed

PE0

RS232 RXD

Port E.0

RXD

Port E.0

PE1

RS232 TXD

Port E.1

TXD

Port E.1

Port B

LEDs

LEDs Disabled

LEDs Enabled

Closed

Port D

Switches

Switches Disabled

Switches Enabled

Closed

LK1

Analogue Reference

if LK1 cut then EXTERNAL REF from header

ONBOARD POT

Closed

CUT Under Board

LCD Contrast

If Cut, add extra resistor

Contrast Pot

Closed

All Ports are brought out to edge of board on to headers. Each header has a VCC and Ground pin for power supply to external circuits. Port F is the Anaput port and is on a header marked Analog. There is an extra six-pin header for miscellaneous functions— Read, Write, ALE, Reset, Ground and VCC. See sections on Using External Connections and Using Analog Functions for details.

5

Section 5 Installing The Software

5.1

Windows 95

To install the software, insert the supplied disk or CDROM into your computer and perform the following steps: 1. Click on your Start button. 2. Select Settings. 3. Select Control . 4. Choose Add/Remove Programs. 5. Click the Install button. 6. Follow On-Screen prompts. The software will then be installed onto your computer and an Icon will be added to your start menu.

5.2

Windows 3.1

Choose RUN from Program Manager, and enter A:\SETUP.EXE as the filename. Press the OK button and the software installation program will begin. The software will then be installed onto your computer and an Icon and Program Group will be added to Program Manager.

Note:

On some PCs, especially laptops, programming problems may occur if the BIOS Parallel Port settings are set to EPP Version 1.7. If programming problems do happen, ensure that the Parallel Port settings in your BIOS are set to EPP V1.9 not V1.7.

In the unlikely event that you have any problems installing the software or suspect that you have faulty media, please the Atmel Starter Kit hotline: Telephone Number: (44) 1970 621 049 Fax Number: (44) 1970 621 040 Email: [email protected]

6

Section 6 How to Use the Software The software is fully context sensitive. This means that pressing F1 at any time will bring up help information about the current option that you have selected. Please note that the toolbar icons referred to in the text have ToolTip’s, so if you want to know the function of any particular button, then hold your mouse pointer over the button in question and its function will be displayed. n Starting a Project n

In-System Programming (ISP)

n

Hardware Requirements

n

Projects

n

Data Files

n

Editing Data

6.1

Projects

If you have used a high-end professional development system you will be familiar with the project concept. Essentially this is a collection of details and data which are managed by the program on your behalf. In the AVR you have both Program Memory and non-volatile Data Memory EEPROM, with various security and device options. The project manager keeps this information together for you so you don't have to and reload all the various files every time you use the programmer. It will also allow you to store information like the project name, the project identifier and it has a small notepad for you to store comments about the project. So before you can start a programming session you must either open an existing project or start a new project. You can open a project, or create a new one, by either going to the Project menu and selecting New or Open, or by using the New Project or Open Project buttons on the toolbar.

6.2

Files

Once a project is open, you can load the files that you need to program into the device. Files may be loaded by either using the Load command in the File menu or by using the Open icon on the toolbar. The program will automatically decode your files whether they are in Intel Hex format, Atmel Generic, Binary or Motorola S record. The file you choose will be loaded into the window then it is displayed on the top of the desktop. So if you have the EEPROM Data Memory window on top then it will load the data into that window.

7

How to Use the Software Note that the AVR ® Assembler which accompanies this program, will produce the correct files for you ready to load into the buffers. You can save the buffer in Binary, Intel Hex or Atmel Generic formats, so you can use the buffer for code conversion. Similarly it will load the data into the Program Memory if that is the window that is on top. The program will not allow you to load data if the project manager window is on top. To change which window is on top you can either click your mouse on any part of the window that is showing, go to the Window menu using Alt W or the mouse, and select the window of your choice or press CTRL - F6. Note that the loaded data will show up in blue text where the default (empty) text color is black. Once your data is loaded you can start your programming session.

6.3

Editing Data

Once a project has been started you can either load a data file or you can insert your own data in Hex or ASCII directly into the Program or EEPROM data windows. With a new project the data windows, called buffers, will contain FF in every location. This is also what a new or erased device will contain. You can move around in the current window by using the cursor keys. In order to see memory further down the window then use the page up and page down keys on the keyboard. You may change the data at any memory location by clicking on that location and typing in the hex values you require. Any changes you make will be reflected by the data changing to green text. The ASCII character of the hex value will be shown alongside the data window. If You wish to edit the buffer in ASCII either click on the right area of the window or press CTRL - A. Once you have entered the required data then you can save the contents of the current window by using either the Save icon on the toolbar or by pressing F2 (on the keyboard) or by choosing the Save function in the File menu.

6.4

Programming

Read Section on Programming using the Board or Programming In-System before programming parts. Before you can start programming a device you must have a project open on the desktop.

6.5

Auto-Program

The easiest and quickest method of programming a device is to use the Auto-program option which is available in either the Program menu or by using the Auto-program icon on the toolbar. If you use this option then you will be presented with a series of check boxes to select which features you want to enable or disable during the programming session. You can enable or disable any of the options by clicking on them or using Arrow and Space keys. If the option has a check mark next to it then it is enabled, if not then it is disabled. Note that the default is for all the options to be enabled. Further note that you should not disable the erase function under normal circumstances. If the ‘dongle’ is not plugged in to your printer port then you may get an error at this point. If you get the Dongle not found error and it has been inserted into the printer port then you should ensure that you have selected the correct printer port. You can change the printer port setting by going to the Options menu and choosing Change Printer Port. Simply choose the correct one for your system. The programmer then attempts to read the device signature bytes. If they are not found because you are using an old version of the device, no device is plugged in, the module is switched off or the lock bits are set, a message box informs you of this. You have the option of Abort, Retry or Ignore.

8

How to Use the Software Auto Program carries out all the steps you have selected. All these options are available individually in the Program Menu and some of them also have Speed Buttons on the toolbar. n Erase Device n

Program Device

n

Device

n

EEPROM

n

Program Lockbits

The programmer has a dual function. In addition to being able to program a device out of circuit using the applications module, you can also program a device which has been soldered into your circuit. This allows you to solder in a blank device and program and reprogram the device without removing it from the board. See the section on Programming In-system for details. Both methods use the same software.

6.6

New Project

This creates a new project. You will be prompted for the device type in a dialogue box. Select the device you wish to base your project around, and press the OK Button. The system will then open a Project Manager & Buffer windows to set project options and allow you to Open the Program and EEPROM files.

6.7

Open Project

Open Project allows you to open an existing project, and all associated files, and settings. Choose Open Project from the Project Menu or use the Speed Button.

6.8

Save Project

It is available on the Project Menu & the toolbar. This allows you to save your project options including font settings, window positions and files in one quick, easy step. You are prompted for a project file name .AVR extension and if either the Program or EEPROM buffers have changed, you will be prompted to save them as well.

6.9

Load File

This allows you to load a data file into your project. You must have the appropriate buffer selected Program or EEPROM on top of the desktop when you choose Load File in the File menu or click on the Load File button, as the file will be loaded into the currently open buffer. The file loader currently has for loading the following file types: n Binary n

Intel Hex

n

Motorola S Record

n

Atmel Generic

The file type is automatically selected and requires no intervention.

6.10

Save File

This allows you to save a data file without saving the whole project. You must have the appropriate buffer selected when you select Save File or Save File As, as the file in the selected buffer will be saved. The Save File option currently has for saving the data in the following file types: n Binary

9

How to Use the Software n

Intel Hex

n

Atmel Generic

To select the file type you want, select the file type from the save file as type pull down box below the File name list in the Save File dialogue box.

6.11

Exit

This will make the application close down. If you have recently made any changes to a project, you will be prompted to save your project. You can exit the program by using the speed button, clicking the close icon on the program window X or choosing Project-Exit.

6.12

Clear Buffer

It is available on the Buffer menu. This will cause the currently selected buffer to be cleared, i.e. Filled with FF’s. Any data currently in the buffer will be lost. Only the selected buffer will be cleared.

6.13

Fill Buffer

It is available on the Buffer menu. A small dialogue box appears where you can select the start address Fill From, the end address Fill To and the value to insert Fill With. The new value is inserted in all the selected addresses and is shown as green text.

6.14

Goto

It is available on the Buffer menu. This will cause the cursor to move to the location in the buffer specified. If the selected value is larger than the buffer size, you are informed. Note: The buffer size changes depending on the device selected.

6.15

Find

It is available on the Buffer menu. Find is used to search for a hex value in the buffer. Simply enter the Hex Value you wish to find in the small dialogue box and hit the Find First button. If the value is found the cursor will be moved to that location and you will also notice that the ‘Find First’ button has now changed to ‘Find Next’. You can use this to repeat your search and find the next occurrence. Click the mouse on Done (or use tab and enter keys) to close the Find dialogue box.

6.16

Device Empty Check

Device Empty Check is a programming function. It is available on the Program menu. This checks to see that the device is blank, i.e. all locations contain FF. Note: This function is only really useful when working with One-Time Programmable Devices (OTP) or UV Erasable Devices. It has no real use with the Atmel Flash Range, but provides a quick and easy way to check if a device is blank.

6.17

Program Device

Program Device is a programming function.

It is available on the Program menu, or on the above button on the speed bar. On the speed bar, it will program the current buffer into the appropriate memory space in the device—Code or EEPROM data depending on which window is currently Focused. This option Programs & Verifies each location, from the selected buffer window into the appropriate location in the device.

10

How to Use the Software Note:

It is advisable to erase the device before programming unless you are adding extra data to existing data in the device. If you are changing data then you cannot change any programmed bit from a 0 to a 1 without erasing the device first. You can however change a bit from a 1 to a 0. So BB could be changed to AA for example but AA cannot be changed to BB. You will not be able to program the device if the write lockbit has been set. If this function is selected from the Program Menu, it will only program the PROGRAM MEMORY. In devices which also have EEPROM MEMORY available, you must use the PROGRAM EEPROM command. The Program Device speed button will carry out either the PROGRAM MEMORY or PROGRAM EEPROM command, depending on which buffer is on top of the desktop.

6.18

Device

device is a programming function.

It is available on the Program menu, or on the above button on the speed bar. This Verifies each location in the program memory buffer window with the appropriate location in the device. Note: This function will only the PROGRAM MEMORY. In devices that also have EEPROM MEMORY available, you must use the EEPROM command. The Speed button will either the Program or EEPROM memory, depending on which buffer is currently selected.

6.19

Program EEPROM

Program EEPROM is a programming function.

It is available on the program menu, or on the above button on the speed bar. The speed button will program the current buffer into the appropriate memory space in the device, depending on which window is currently Focused. This Programs & Verifies each location, in the EEPROM memory buffer window into the appropriate location in the device. Note: As the EEPROM features an auto-erase function, it does not require a chiperase to be performed prior to programming. A chip-erase is only required if the lock bits are set. The Speed button will either Program the Code or EEPROM memory, depending on which buffer is currently selected.

6.20

EEPROM

EEPROM is a programming function.

It is available on the Program menu, or on the above button on the speed bar. This Verifies each location, in the EEPROM buffer window with the appropriate location in the device. The EEPROM buffer must be selected on top if the Speed button is used.

6.21

Read Device

Read Device is a programming function.

It is available on the Program menu, or on the above button on the speed bar.

11

How to Use the Software This will Read each location in the Device into the appropriate location in the program memory buffer window. Note: This will overwrite any existing data in the buffer, and this will also not read EEPROM MEMORY unless the speed button is used with the EEPROM data window selected.

6.22

Read EEPROM

Read EEPROM is a programming function.

It is available on the Program menu, or on the above button on the speed bar. This will Read each EEPROM location in the Device into the appropriate location in the EEPROM memory buffer window. Note: This will overwrite any existing data in the EEPROM memory buffer window. If the speed button is used, the EEPROM data window must be on top of the desktop.

6.23

Program Lockbits

Program Lockbits is a programming function.

It is available on the Program menu, or on the above button on the speed bar. It will program the security lock bits according to the setting you have selected in the Project Manager. Warning: Setting Lockbits may mean that you will be unable to perform further verification on the device, and disable further writing to the device. However, you will be able to re-use the device if you perform an erase.

6.24

Erase Device

Erase Device is a programming function.

It is available on the Program menu, or on the above button on the speed bar. This will erase all data from the Program Memory & EEPROM Memory if available on the device. It is advisable to always erase a device before programming. Warning: Erasing a device will clear all data from the device permanently.

6.25

Health Check

Health Check is a programming function. This unique function will check the device to see if it has any defects, which may prevent it from programming correctly. So, for example, you can use it to test an old device to see if it still works. This function also has an associated button on the toolbar. Note that this function will erase any data that is currently on the device. It will report a or Failure.

6.26

Printer Port

This allows you to set which printer port the programmer is currently connected to. Simply select the appropriate printer port, and hit the Change Button. To Cancel any changes you have made press the Cancel button.

6.27

Font Selection

This allows you to set a different Font for the Buffer Windows. You may wish to do this if you feel that the default font is a little small, or unclear. The default font is Terminal, size 10, which is set for 14 inch monitors and is probably too small for larger monitors.

12

How to Use the Software As a rule of thumb, Terminal font is usually best for displaying the full ASCII character set, as it has all the characters below 20. You will find other fonts will ‘fill’ these characters with a circumflexed Y or another similar character.

6.28

Advanced Options

This allows you to override Signature Byte Checking. This is useful if you use pre-production devices which may not have signature information included, or you are using an uned device which has the same programming algorithm. USE WITH CARE.

6.29

Edit as ASCII

This option allows you to change the editing mode from Hex to ASCII and back. This is useful if a mouse or pointing device is not available.

6.30

Device Checksum

Reads Device and calculates the check sum. It does not load the buffer with the device contents.

6.31

Select Colors

This allows you to change the color of the text in the buffer windows. The 5 text modes and their default colors are: Text Mode

Default Color

Blank

Black

Load Data

Blue

Edited Data

Blue

Verified Data

Green

Program/ failure

Red

The default colors can be changed selecting the data type you wish to change in the ‘Data Type’ list, and clicking on the change color button.

6.32

SPI Optimization

The SPI optimization option located under the ‘Options’ menu allows you to improve the performance of operations on AT89S SPI devices. By setting the option to ‘Auto’, you may notice a significant performance increase, especially on lower spec PC systems (i.e. below Pentium class). Note: The default for this option is OFF. If you switch it to Auto and experience problems reading or programming a device, return the setting to ‘None’.

13

Section 7 Programming Using the Board

7.1

Device Orientation

Before programming a device using the programming module, the device adapter must be inserted correctly into the programming unit. The adapter itself has a corner cut off, which locates pin 1 of the device and matches the marking on the main unit. This adapter should be pre-fitted, but can be replaced if the device programming life is exceeded—refer to your supplier to obtain new device adapter. The orientation of the device is vitally important. If you put it in the wrong way then you may damage the device. DO NOT PLUG A DEVICE ADAPTER IN WITH THE POWER SWITCHED ON or you may damage it. Similarly never remove the device adapter with the power on.

7.2

Voltage Selection

Jumper JP1 is used to select either 3.3V or 5V programming. For VCC = 5V remove jumper JP1 - jumper open For VCC = 3.3V insert JP1 - jumper closed Jumper JP2 is used to set Brown-out detector voltage. For Brown Out = 4.5V insert jumper JP2 - jumper closed For Brown Out = 2.9V remove jumper JP2 - jumper open This should be set to the same voltage as VCC. If VCC is set to 3.3V and Brown-out is set to 4.5V, then the device will be held in reset and will NOT program. See section on Brown-out Detector for more details.

14

Programming Using the Board

7.3

15

Power and Lead Connections

The 10-way programming lead is inserted in the box header—the key-way ensures correct orientation. The computer connections are shown in the section on Connecting the System. The power supply 9-15V DC or 7-12V AC is plugged into the power connector 5.5/2.1 Barrel. The Power On/Off switch is located next to the power connector. Insert the device adapter before switching the power on. The power on LED should light when the power is correctly applied. Your hardware is now ready for programming. Refer to Using the Software description for details of programming operations. A programming LED indicates programming is happening.

Section 8 Brown Out Detector The brown out detector circuit is used to detect voltage drops. If a short glitch occurs in the power, this circuit ensures that the processor resets properly rather than operating randomly. The brown out detector must be set to the same voltage as the circuit voltage, V CC— 3.3V or 5V. For 3.3V operation, jumper JP2 must be removed (jumper open) and for 5V operation it must be closed. Voltage

Operating Voltage

Hysteresis

5 Volts

4.5 Volts

200 mV

3.3 Volts

2.9 Volts

200 mV

These values are approximate and may vary with temperature and other factors.

16

Section 9 Board Applications

9.1

Using Switches and LEDs

The LEDs are connected through a 1K resistor network to Port B. The switches are connected to Port D. The switches and LEDs can be disconnected if required, so to use them, ensure that the jumpers labeled Port B and Port D are closed. The board is also marked with the port pin connection for each switch and LED. The ports must be correctly set in software as input or output. This is accomplished by setting the direction control s to 0 for input and 1 for output. Typical set up code would be: mov r16,$ff ;move literal into temporary store out DDRB,r16 ;set direction to ones for output - LEDs out PORTB,r16 ;switch all the LEDs on mov r16,$00 ;move literal into temporary store out DDRD,r16 ;set direction to zeros for input Switches

9.2

Using External Connections

All the ports are brought out to headers on the edge of the board. In addition to the port pins, each header has a connection for ground and VCC to supply external circuits. Note this voltage, VCC, will be either 3.3V or 5V depending on the setting of jumper 1, JP1, and the brown out detector will operate. Note: If your circuit is to draw significant current (>150 mA) then a heat sink will be required on the on-board regulator—LM317. This device is rated at 1.5 Amps but it does need a heat sink to supply this current. If your circuit will draw more than 1 amp, you may need a separate power supply. The ports on the device are connected to the headers marked Port A, Port B, Port C, Port D, Port E and Analog, Port F. The layout of all the headers is the same and is shown in the following diagram.

17

Board Applications

CUT CORNER SHOWN ON BOARD FOR ORIENTATION BIT 0 OF PORT. SAME FOR ALL PORTS

BIT 7 OF PORT. SAME FOR ALL PORTS EXTRA CONNECTION FOR GROUND

9.2.1

Misc. Header

EXTRA CONNECTION FOR VCC

The last header labeled Misc. has connections to processor pins other than the port pins. CUT OUT MARKED ON BOARD FOR ORIENTATION READ RD

WRITE WR

EXTRA CONNECTION FOR GROUND

EXTRA CONNECTION FOR VCC

If external operations do not want pull-ups on the port pin, both the switches and the LEDs can be disconnected from the processor. To isolate the LEDs, remove the jumper set labeled Port B, and to isolate the switches, remove the jumper set labeled Port D.

9.3

Using Analog Functions

9.3.1

Analog Port: Marked on Board

The A/D converters use the header labeled Analog for the A/D inputs on Port F, which is input only. A +10V to -10V supply is provided on the connector marked Op-Amp next to the crystal. A lead from this connector can be used for an external amplifier for the A/D inputs. The layout of the Analog header is shown below.

CUT OUT MARKED ON BOARD FOR ORIENTATION

ADC0 - ADC7 CONNECTED TO PORT FPF0 - PF7

The A/D converters can use either the on-board (Internal) Voltage Reference or an external Voltage Reference. 9.3.2

18

Using Internal Reference

To use the internal, on-board Voltage Reference, the pot marked AREF is used to set the voltage level. The voltage level can be measured with a DVM connected to the

Board Applications header pins labeled Analog Ref and Analog Gnd in the above diagram or from the two holes marked Meter + and -. 9.3.3

Using External Reference

To use the A/D converters with an external Voltage Reference, the link marked LK1 must be cut. The voltage is applied to the pins marked Analog Ref and Analog Gnd on the Analog header—see diagram above.

9.4

Using External RAM

The ATmega103 can be used with external SRAM. A socket is provided for a 28-pin RAM chip and for an address latch chip. These are next to the device adapter at the top of the board. There is also a header for further memory expansion, which is connected through the address latch. The pin functions are marked on the board, including chip select (CS).

9.4.1

RAM Recommendations

A low power 62256 SRAM is suggested with an access time of 70 nS. If a very fast RAM is required, the crystal frequency may need to be increased. If a much slower SRAM is used, the SRAM Wait State bit must be enabled in software–—see data book. The layout of the 28-pin RAM socket is shown below, and any RAM with this pin-out could be used.

9.4.2

RAM Socket Pin Layout A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 VSS

9.4.3

Address Latch

1 2 3 4 5 6 7 8 9 10 11 12 13 14

28 27 26 25 24 23 22 21 20 19 18 17 16 15

VCC WE A13 A8 A9 A11 OE A10 CS I/O7 I/O6 I/O5 I/O4 I/O3

The board connections are for a 74HC573 device. This device will operate reliably with the 4 MHz crystal supplied but if a faster crystal is inserted, a faster version of this device may be required—74AHC573 or 74FHC573. Note that this option will alter the EMC characteristics of the board and the CE mark will no longer be valid without re-testing.

19

Board Applications

9.5

Using LCD Connections

The header marked LCD interface is for a standard 2 x 16 LCD. The connections are shown on the board and in the following table. Connection Name

Function

0V

Ground

+5

VCC - must be 5V

Vo

Contrast

RS

Select- A14

Wr

Not Write

E

Enable

D0

Data Bit 0

D1

Data Bit 1

D2

Data Bit 2

D3

Data Bit 3

D4

Data Bit 4

D5

Data Bit 5

D6

Data Bit 6

D7

Data Bit 7

The board is designed for use with an LCD with a Hitachi driver chip built-in, with a contrast pin voltage of 0 to 5 Volts. The pot next to the LCD connector is used for contrast adjustment. If you use a different LCD driver, it may have a different voltage contrast range. In order to accommodate this, add a resistor to the board (shown on board) and cut track on underside of board—marked cut. This board is not designed for use with back lit LCD modules, so the extra connections needed are not included and the power supply will not supply the current required. The LCD must be driven in Memory Mapped Mode as Read and Write are descite pins on the Mega parts—see data sheet. If the crystal has been changed to a faster crystal frequency, memory mapped operations will not work.

9.6

Using RS232

The connection supplied is a 9-way female D-type, so a straight through lead is required—not a null-modem cable. The Jumpers in the middle of the board, marked PE0 and PE1 must be set to RS232 not Port or RXD and TXD will be disabled. As this board has a 4 MHz crystal, the percentage error on the Baud Rate will be between 0.2 and 7.8%. Replacing the crystal with a 3.6846 MHz or 4.608 MHz crystal will reduce this error to zero but may have EMC implications. A standard (straight through) lead is required, NOT a null-modem cable.

9.7

Programming InSystem

Devices can be programmed in your circuit rather than on the board. For In-System Programming, ISP, the 10-conductor ribbon cable is connected to a dual row 10-pin 0.1" pitch header on your circuit. You will need to use either a multiplexer chip, such as a 4053, or wire directly to the Pins of the device. Without a multiplexer chip, Serial Communications and SPI port will be unusable.

20

Board Applications In addition the system 5 Volts and Ground need to be connected to the programming lead. DO NOT EXCEED 5 VOLTS ±5% (4.75V TO 5.25V). YOU MAY DAMAGE YOUR COMPUTER. THIS WARNING APPLIES TO ANY ISP SYSTEM. BEWARE!!!

9.8

ISP Header Layout

KEY WAY

OPTIONAL PROGRAM INDICATOR CICRUIT

9.9

Interface Using Resistors

PROGRAMMING HEADER

MISO IS CALLED PDO AND MOSI IS PDI ON MEGA DEVICES - PORT E BITS 0 AND 1 NOT PINS ON PORT B.

CIRCUIT

Typical resistor values would be 1K. This circuit is fine if ports PB7, PE0 and PE1 are used as inputs in your circuit and no communication is required. If Outputs are needed or RS232 connections, especially higher than a few milliamps, then the multiplexed circuit is preferable.

9.10

Using an Analogue Multiplexer IC TO ISP CONNECTOR

TO CIRCUIT

21

Board Applications The multiplexer select can be driven from the LED connection on the programming lead so can a low power LED with its cathode connected to the LED connection via a suitable resistor—1KΩ is fine. If you use this connection then the output will be low 0 during programming and a 1 at all other times. Note that it will float if the programmer is not active, i.e. the software is not running, so you may need to use a pull-up resistor. Note: All the pins except ground will float if the programmer is not active. The device may then be programmed in the normal way. 9.10.1

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Using Real Time Clock

A 32.768 kHz crystal is connected to TOSC1 and TOSC2 pins—Pin 18 and Pin 19. This can be used to generate a 1 second pulse—see data book for details.

Technical

Section 10 Technical Technical for this product is provided by the AVR Starter Kit Team. information is provided below.

10.1

Info

We would be grateful if you can on any errors you may find in this software. We pride ourselves on our customer and we can solve the problem and send you an update very quickly via e-mail. If you wish to communicate via telephone the number is listed below: Tel: (44) 1970 621 049 STK300 Technical Hotline Fax: (44) 1970 621 040 e-mail: [email protected] Website: www.atmel.com We also have an extensive range of AVR development products available. Please visit our website (http://www.atmel.com) for full details. Software upgrades will be made available on our website.

10.2

Warranty

Atmel warrants that the Product delivered hereunder shall conform to the applicable Atmel Data Sheet or mutually agreed upon specifications and shall be free from defects in material and workmanship under normal use and service for a period of 30 days from the applicable date of invoice. Products which are "samples", "design verification units", and/or "prototypes" are sold "AS IS," "WITH ALL FAULTS," and with no warranty whatsoever. If, during such warranty period, (i) Atmel is notified promptly in writing upon discovery of any defect in the goods, including a detailed description of such defect; (ii) such goods are returned to Atmel, DDP Atmel's facility accompanied by Atmel's Returned Material Authorization form; and (iii) Atmel's examination of such goods discloses to Atmel's satisfaction that such goods are defective and such defects are not caused by accident, abuse, misuse, neglect, alteration, improper installation, repair, improper testing, or use contrary to any instructions issued by Atmel, Atmel shall (at its sole option) either repair, replace, or credit Buyer the purchase price of such goods. No goods may be returned to Atmel without Atmel's Returned Material Authorization form. Prior to any return of goods by Buyer pursuant to this Section, Buyer shall afford Atmel the opportunity to inspect such goods at Buyer's location, and any such goods so inspected shall not be returned to Atmel without its prior written consent. Atmel shall return any goods repaired or replaced under this warranty to Buyer transportation prepaid, and reimburse Buyer for the transportation charges paid by Buyer for such goods. The performance of this warranty does not extend the warranty period for any goods beyond that period applicable to the goods originally delivered.

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Technical THE FOREGOING WARRANTY CONSTITUTES ATMEL'S EXCLUSIVE LIABILITY, AND THE EXCLUSIVE REMEDY OF BUYER, FOR ANY BREACH OF ANY WARRANTY OR OTHER NONCONFORMITY OF THE GOODS COVERED BY THIS AGREEMENT. THIS WARRANTY IS EXCLUSIVE, AND IN LIEU OF ALL OTHER WARRANTIES. ATMEL MAKES NO OTHER WARRANTIES, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. THE SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF THIS WARRANTY SHALL BE AS EXPRESSLY PROVIDED HEREIN. LIMITATION ON LIABILITY Notwithstanding anything to the contrary contained herein, Atmel shall not, under any circumstances, be liable to Buyer or any third parties for consequential, incidental, indirect, exemplary, special, or other damages. Atmel's total liability shall not exceed the total amount paid by Buyer to Atmel hereunder. Atmel shall not under any circumstances be liable for excess costs of reprocurement.

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Section 11 Appendix I

Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL (408) 441-0311 FAX (408) 487-2600

Europe Atmel U.K., Ltd. Coliseum Business Centre Riverside Way Camberley, Surrey GU15 3YL England TEL (44) 1276-686677 FAX (44) 1276-686697

Asia Atmel Asia, Ltd. Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon, Hong Kong TEL (852) 27219778 FAX (852) 27221369

Japan Atmel Japan K.K. Tonetsu Shinkawa Bldg., 9F 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL (81) 3-3523-3551 FAX (81) 3-3523-7581

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