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AVR Butterfly Evaluation Kit
..............................................................................................

User Guide

Table of Contents

Section 1
Introduction ........................................................................................... 1-5
1.1

Resources Available on the AVR Butterfly Kit ..........................................1-6

Section 2
How to Operate the Pre-programmed Application................................ 1-7
2.1
2.2
2.3
2.4

Included Firmware ....................................................................................1-7
Joystick Input ............................................................................................1-8
Menu System ............................................................................................1-9
Bootloader...............................................................................................1-11

Section 3
Using the AVR Butterfly ...................................................................... 1-15
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11

Connectors..............................................................................................1-15
Programming the AVR Butterfly ..............................................................1-15
JTAG .......................................................................................................1-19
LCD Display ............................................................................................1-20
Joystick ...................................................................................................1-20
Sensors...................................................................................................1-21
Connect to PC.........................................................................................1-23
USI ..........................................................................................................1-24
External DataFlash .................................................................................1-25
Piezo element .........................................................................................1-26
Battery.....................................................................................................1-26

Section 4
Troubleshooting Guide ....................................................................... 1-27
Section 5
Technical Specifications ..................................................................... 1-29
Section 6
Technical Support............................................................................... 1-31
Section 7
Schematics ......................................................................................... 1-33
7.1

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Bill of Materials........................................................................................1-40

AVR Butterfly User Guide

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AVR Butterfly User Guide

Section 1
Introduction
The AVR Butterfly evaluation kit is designed to demonstrate the benefits and key features of the AVR microcontrollers. It is a stand alone microprocessor module that can be
used in numerous applications:
! The AVR architecture in general and the ATmega169 in particular
! Low power design
! The MLF package type
! Peripherals
– LCD controller
– Memories
- Flash, EEPROM, SRAM, external DataFlash
– Communication interfaces
- UART, SPI, USI
– Programming methods
- Selfprogramming/ Bootloader, SPI, Parallel, JTAG
– Analog to Digital Converter (ADC)
– Timers/Counters
- Real Time Clock (RTC)
- Pulse Width Modulation (PWM)
It also serve as a development kit for the ATmega169, and can be used as a module in
other products.
Figure 1-1. AVR Butterfly

AVR Butterfly User Guide

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1.1

Resources
The following resources are available on the Butterfly kit.
Available on the ! ATmega169 (MLF-package)
AVR Butterfly Kit

! LCD-on-glass display with 120 segments, for demonstrating the ATmega169 LCD
controller.
! Joystick, 4-directions with centre push, as user input
! Piezo element, to play sounds
! 32kHz Xtal for the RTC
! 4 Mbit DataFlash, for data storage
! RS-232 level-converter, for communicating with off-board units
! Negative Temperature Coefficient (NTC) thermistor, to measure temperature
! Light Dependent Resistor (LDR), to measure light intenisty
! 3V button cell battery (600mAh) to provide operating power
! JTAG emulation, for debugging
! USI-interface, for additional communication interface
! Supported by AVR Studio 4.
! Pre-programmed with a demonstration application, including bootloader
! No external hardware is required to reprogram the AVR Butterfly

The ATmega169 in the kit controls the external peripherals, and can also be used to do
voltage readings from 0 to 5 volts. The kit can be reprogrammed a number of different
ways including serial programming through the JTAG port. Most users will prefer to use
the preloaded bootloader with AVR Studio to download new code.

For more information about the ATmega169, see the datasheet at www.atmel.com.

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AVR Butterfly User Guide

Section 2
How to Operate the Pre-programmed
Application
The AVR Butterfly comes with a preprogrammed application. This section will go
through the basics of this application. The firmware can be downloaded from the AVR
Butterfly web-site, http://www.atmel.com/products/AVR/butterfly.

2.1

Included
Firmware

These modules are preprogrammed with the AVR Butterfly:
! Bootloader code
! Application code
– State machine
– Features included
- Name-tag
- Clock (date)
- Temperature measurements
- Light measurements
- Voltage readings
- Play tunes/melodies
- Auto power save
- Adjust LCD contrast
– More functions can be added later on
- Calculator
- Reminder function
- Alarm (daily alarms, kitchen timers, etc…)
- Play melodies and displaying the text (Karaoke-function)
- With the 4Mbit dataflash one can store large amount of data. (Some
examples: AVR Info Bank (Basic of all AVR-parts); your local bus-table;
melodies, etc.)
Note:

AVR Butterfly User Guide

The application can be upgraded without any external hardware, due to the integrated level-converter and the Self-programming feature.

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2.2

Joystick Input

To operate the AVR Butterfly a joystick is used as user input. It operates in five directions, including center-push, see Figure 2-1.
Figure 2-1. Joystick Input

Using the joystick one can move around in the menu shown in Figure 2-2, and edit values, entering name, etc. Here are examples on how to enter your name.

2.2.1

Entering Your Name
Using the Joystick:

1. Press the joystick up (“SCROLL UP”) to wake the AVR Butterfly. If “AVR BUTTERFLY” is notscrolling over the display, press the joystick to the left (“EXIT
SUB-MENU”) until it does.
2. Press the joystick down (“SCROLL DOWN”) three times, so the string “NAME” is
displayed.
3. Press the joystick to the right (“ENTER SUB-MENU”). If this is the first time a
name is entered, the string “ENTER NAME” will be displayed, otherwise the
name already entered will be displayed and you have to press the joystick to the
right (“ENTER SUB-MENU”) once more.
4. When “ENTER NAME” is displayed press center push (“ENTER”). If this is the
first time you enter a name, the character “A” should be blinking in the right side
in the display, otherwise the last character of the already entered name will blink.
5. Press the joystick up (“SCROLL UP”) or down (“SCROLL DOWN”) to get to the
wanted character. Press the joystick to the right (“ENTER SUB-MENU”) to add a
new character or press the joystick to the left (“EXIT SUB-MENU”) to remove a
character.
6. When you have got all the characters, up to maximum 25, press center push
(“ENTER”) to save this name. The name will now be displayed in the display. If
the name is more than 6 characters long it will scroll over the display, otherwise it
will be displayed static.

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AVR Butterfly User Guide

2.2.2

Entering Your Name
Using a Terminal:

1. Connect a serial cable from the PC to the AVR Butterfly as described in Section
3.7 “Connect to PC”, Open a terminal on your PC (e.g. HyperTerminal) and configure the terminal to 19200 Baudrate, 8 Databits, none Parity and one stop bit.
2. Go through point 1, 2 and 3 above.
3. When the “ENTER NAME” is displayed press the joystick down (“SCROLL
DOWN”), and “DOWNLOAD NAME” will be displayed
4. Press center push (“ENTER”) to activate the UART, and the text “WAITING FOR
INPUT ON RS232” will be displayed.
5. Type your name in the terminal window on the PC (up to 25 characters) and save
the name by pressing enter on your PC-keyboard. The name you typed should
now be displayed in the AVR Butterfly display.
Note:

2.3

Menu System

AVR Butterfly User Guide

The Auto Power Off feature is default enabled. It will turn off the LCD after
default 30 minutes. This timeout can be changed or turned off. To wake the
AVR Butterfly from SLEEP, press the joystick in the UP-position.

A menu system is established to be able to shift between the different modules in application in a efficient way.

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Figure 2-2. Application Menu

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AVR Butterfly User Guide

Figure 2-2 shows the menu system of the application that comes with the AVR Butterfly.
The column to the left displays the main menu: “AVR Butterfly”, “Time”, “Music” etc… To
shift between the alternatives in the menu, press the joystick UP or DOWN. To enter a
sub-menu, press the joystick to the RIGHT. To exit a sub-menu, press the joystick to the
LEFT. To enter/adjust a value, press ENTER. E.g. when “Adjust clock” appears in the
LCD, press ENTER to enter the adjust function.

2.4

Bootloader

The AVR Butterfly comes with a bootloader which uses the self-programming feature in
the ATmega169. The bootloader combined with the integrated RS-232 level-converter
makes it possible to upgrade the application without any external hardware. It is based
on the Application Note AVR109: Self Programming AVR, but uses the new buffer load
mode for more efficient data downloading. AVR Prog, which is included in AVR Studio4,
is used as PC frontend. The data is transmitted through the RS-232 interface. Connect a
serial-cable from the PC to the AVR Butterfly as described in Section 3.7 “Connect to
PC”.
Figure 2-3. AVR Prog in AVRStudio4

2.4.1

Upgrade the
ATmega169

AVR Butterfly User Guide

A jump to the boot section can be done from the application, “Options>Bootloader>Jump to Bootloader”, see Figure 2-2, or just reset the ATmega169 by shortcut
pin 5 and 6 on J403 the ISP connector, (after a reset the ATmega169 will start in the
boot section). See Figure 3-3 for the pinout of the ISP-connector. Nothing will be displayed on the LCD while in boot section. Press and hold the joystick in the ENTERmodus while starting AVR Prog. When AVR Prog starts, release the joystick. Find the
*.hex file you want to program with the “Browse” button, and press “Program”. See that
“Erasing Device”, “Programing” and “Verifying” goes “OK”, this is done automatically.
After upgrading the application, press the “Exit”-button in AVR Prog in order to leave
programming mode in the ATmega169 bootloader.

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Figure 2-4. AVR Prog

2.4.2

Jump to the
Application Sector

From the Boot Section a jump to the application is done by pressing the joystick in the
UP-position.

2.4.3

Fuses and Lock Bits

For the firmware to operate correctly these fuses and lock bits on the ATmega169 are
the only ones to be programmed:

Extended Fuse Byte (0xFF)
– None
Fuse High Byte (0x98)
– JTAGEN (JTAG Interface Enabled)
– SPIEN (Serial Programming Enable)
– BOOTSZ1 (1024 words Boot Size)
– BOOTSZ0
– BOOTRST (Boot Reset vector Enabled)

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AVR Butterfly User Guide

Fuse Low Byte (0xE2)
– SUT0 (65 ms Start-up Time)
– CKSEL3 (Internal RC Oscillator)
– CKSEL2
– CKSEL0
Lock Bit Byte (0xEF)
– BLB11 (SPM is not allowed to write to the Boot Loader section)
Note:

AVR Butterfly User Guide

For all fuses and lock bits, “1” means unprogrammed and “0” means programmed.Using the AVR Butterfly

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AVR Butterfly User Guide

Section 3
Using the AVR Butterfly

This section describes in detail how to use the AVR Butterfly evaluation kit.

3.1

Connectors

Some of the I/O-pins on the ATmega169 are available on the connectors of the AVR
Butterfly. These connectors are for communication, programming and input to the ADC
of the ATmega169.

Figure 3-1. Connectors

3.2

Programming the In addition to using the pre-programmed bootloader with AVR Studio, the ATmega169
on the AVR Butterfly can be programmed using SPI, High-voltage Parallel Programming
AVR Butterfly
and the JTAG interface.

3.2.1

In-System
Programming

AVR Butterfly User Guide

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Figure 3-2. In-System Programming

To program the ATmega169 using ISP Programming mode, connect a 6-wire cable
between the ISP6PIN connector on the STK500 board and J403 the ISP connector on
the AVR Butterfly as shown in Figure 3-2. This device can be programmed using the
Serial Programming mode in the AVR Studio4 STK500 software. Instead of soldering in
a ISP-header, one can make contact just by pressing the header to the footprint. Make
sure that pin 1 on the STK500 match with pin 1 on the AVR Butterfly. See Figure 3-3 for
the pinout of the ISP Connector.
Figure 3-3. ISP Connector, J403

1 2
PB3

VCC_EXT

PB1

PB2

RST

GND
ISP

Notes: 1. More information about the STK500 can be found in the STK500 User
Guide, which is available at the Atmel web site, www.atmel.com. See
STK500 User Guide for information on how to use the STK500 front-end
software for ISP Programming.
2. Do not use the AVRISP for In-System Programming, unless if the kit is powered from an external power source.

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AVR Butterfly User Guide

3.2.2

High-voltage Parallel
Programming

It is possible to program the ATmega169 through the High-voltage Parallel Programming interface. However this requires to move two resistors on the PCB. High-voltage
Parallel Programming is only meant to be used in the worst case scenario, where both
SPI and the JTAG interface are disabled.

To make the parallel programming work, R203 must be placed where the R204 should
be, and R404 must be placed where the R403 should be according to Figure 3-4. See
the Assembly Drawing in the 7 Complete Schematics

Figure 3-4. Ohm Resistors

Connect RESET, BSEL2 and XTAL1 from the STK500 to respectively pin 6, pin 8 and
pin 10 on the JTAG (J402) connector on the AVR Butterfly. See Figure 3-5. The JTAG
connector must be mounted on the back side of the AVR Butterfly.
Figure 3-5. Reset, BSEL2 and XTAL1 cables

Connect PROG DATA and PROG CTRL from the STK500 to respectively PORTB and
PORTD on the AVR Butterfly. Make sure that pin 1 on the STK500 connects to pin 1 on
the AVR Butterfly.

AVR Butterfly User Guide

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Figure 3-6. PORTB and PORTD

See the Schematic and the Assembly Drawing in the 7 Complete Schematics for further
details.
The device can now be programmed using the High-voltage Programming mode in AVR
Studio STK500 software.
During programming there will be some noise from the piezo element, and some flickering on the LCD, this because PORTB and PORTD are connected to theses modules.
Figure 3-7 shows the pinout for the I/O port headers PORT B and PORT D.

Figure 3-7. PORT B and PORT D
1 2

1 2
PB1

PD0

PD1

PB2

PB3

PD2

PD3

PB4

PB5

PD4

PD5

PB6

PB7

PD6

PD7

PB0

GND

VCC_EXT
PORTB

Note:

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GND

VCC_EXT
PORTD

When the AVR Butterfly is configured in High-voltage Parallel Programming
mode, the JTAG interface will not work, neither will the external crystal, causing
the pre-programmed application that comes with the AVR Butterfly to not operate correctly.

AVR Butterfly User Guide

Note:

3.3

JTAG

More information about the STK500 can be found in the STK500 User Guide,
which is available at the Atmel web site, www.atmel.com. See the STK500 User
Guide for information on how to use the STK500 front-end software in High-voltage Programming mode.

Figure 3-8 shows how to connect the JTAG ICE probe to the AVR Butterfly.
Figure 3-8. JTAG connector

Note:

The JTAG connector must be mounted on the back-side of the AVR Butterfly.

The JTAG connector is used for the ATmega169 built in JTAG interface. The pinout of
the connector is shown in Figure 3-9 and is compliant with the pin out of the JTAG ICE
available from Atmel. Connecting a JTAG ICE to this connector allows On-chip Debugging of the ATmega169.
More information about the JTAG ICE and the On-chip Debugging can be found in the
AVR JTAG ICE User Guide, which is available at the Atmel web site, www.atmel.com.
Note: Pin 7, NC(VCC) is the Vsupply pin for the JTAG. This pin is not connected
because the JTAG would draw power from the battery on the AVR Butterfly.
Pin 8, NC(BS2) and the pin 10, GND(XTAL1) can be modified serve as the BS2 and
XTAL1 pin during High-voltage Parallel Programming. For more details see 3.2.2 Highvoltage Parallel Programming.
Figure 3-9. JTAG Connector
1 2
TCK

GND

TDO

VCC

TMS

RST

NC(VCC)

NC(BS2)
GND(XTAL1)

TDI
JTAG

Note:

AVR Butterfly User Guide

It is highly recommended to apply external power (3,1 – 4,5V), when using the
JTAG to save the battery. See Figure 3-10 for how to connect external power.

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Make sure to disable the OCD-fuse after a debugging session, due to power
consumption. The OCD-fuse will be disabled if pressing on the “Stop Debugging” button in AvrStudio4, before disconnecting the JTAG ICE probe from the
AVR Butterfly.
Figure 3-10. External Power

External power can be applied at pin 9 and 10 at both PORTB and PORTD, see Figure
3-7 for the pinout.
If the JTAG are not in use, the four JTAG pins can be used as input for the ADC channels ADC[4:7]. See the ATmega169 datasheet for more information, available from
www.atmel.com

3.4

LCD Display

The LCD display on the AVR Butterfly is the same as used on the STK502 available
from Atmel. The connections between the ATmega169 and the LCD are also the same.
See the STK502 User Guide at www.atmel.com for more information about the LCD display, and the LCD bit-mapping.
For more information on how to write software for the LCD-display see application note
“AVR064: STK502 – A Temperature Monitoring System with LCD Output” and application note “AVR065: LCD Driver for the STK502 LCD”.
Note: Touching the LCD-pins will affect the segments on the LCD.

3.5

Joystick

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The AVR Butterfly has a miniature joystick for input from user. It operates in five directions, including centre-push. The common line of all directions is GND. This means that
internal pull-up must be enabled on the ATmega169 to detect the input from the joystick.

AVR Butterfly User Guide

Figure 3-11. Joystick Schematic

3.6

Sensors

The AVR Butterfly has two on-board sensors which makes it possible to measure both
temperature and light. In addition is has a voltage-divider that is used to measure voltages from 0 to 5V.

3.6.1

Temperature Sensor

The temperature sensor can be found at the back side of the AVR Butterfly. See Figure
3-12.

AVR Butterfly User Guide

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Figure 3-12. Temperature Sensor

An NTC (Negative Temperature Coefficient)-thermistor is used to measure the temperature. An NTC-thermistor is characterised by the fact that when the temperature goes
down the resistance goes up. Using a voltage divider and reading the voltage over the
thermistor through the ADC-channels on the ATmega169, the temperature in can be
calculated. Equation for calculating the temperature in Celsius is shown in Figure 3-13.
Figure 3-13. Temperature Equation
β
Temperature = --------------------------------------------------------------------------- – Tzero
ADC
β -⎞
⎛ ln ⎛ ------------------------------------⎞ + ------------⎝ ⎝ ( 1024 – ADC )⎠ Tamb⎠
β

= 4250

ADC = Value in the ATmega169 ADC Data Register – ADCL and ADCH
Tzero = 273°K
Tamb = 298°K (273° + 25°)
The temperature in Fahrenheit can be found from Figure 3-14
Figure 3-14. Fahrenheit VS Celsius
F – 32 )⎞
⎛ (-------------------- = C
⎝ 1.8 ⎠
The AVR Butterfly is capable of measuring the temperature from –10ºC/+14ºF to
+60ºC/140ºC with an accuracy of ±1ºC.

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AVR Butterfly User Guide

3.6.2

Light Sensor

The light sensor is located at the front of the AVR Butterfly, over the LCD. See Figure
3-15.
Figure 3-15. Light Sensor

An LDR (Light Dependent Resistor) is used to measure the light. An LDR is characterised by the fact that when the light decreases the resistance goes up. Using a voltage
divider and reading the voltage over the LDR through the ADC-channels on the
ATmega169, the light can be calculated.

3.6.3

Voltage Reader

The AVR Butterfly is capable of reading voltages from 0V to 5V. The input must be connected to the pins shown in Figure 3-16. Using a voltage divider and reading the voltage
over the resistors through the ADC-channels on the ATmega169, the applied voltage
can be calculated. The accuracy is about 0,1V.
Figure 3-16. Voltage Readings

Note:

3.7

Connect to PC

AVR Butterfly User Guide

Do not apply voltages above maximum 10V

The AVR Butterfly has an on-board level-converter for the RS-232 interface. This means
that no external hardware is required to reprogram the AVR Butterfly using the self programming feature in the ATmega169. Figure 3-17 shows how to connect a serial-cable
to the AVR Butterfly. The integrated RS232 level converter operates down to 2.0V supply voltage.

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Table 3-1. UART
AVR Butterfly UART

COM2

Pin 1 (RXD)

Pin 3

Pin 2 (TXD)

Pin 2

Pin 3 (GND)

Pin 5

Figure 3-17. UART Connector

3.8

USI

The AVR Butterfly has connections for the USI-interface. Figure 3-18 shows the pin-out
for the USI. Through the USI interface other modules can be connected, and the AVR
Butterfly can serve as a top-module card.
Figure 3-18. USI Connector

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AVR Butterfly User Guide

Table 3-2. USI
AVR Butterfly USI
Pin 1 (USCK/SCL)
Pin 2 (DI/SDA)
Pin 3 (DO)
Pin 4 (GND)

3.9

External
DataFlash

An external dataflash is provided with the AVR Butterfly. This is the 4-megabit serial
DataFlash from Atmel, type AT45DB041B. More information about the DataFlash can
be found in the datasheet available at the Atmel web site:
http://www.atmel.com/products/DataFlash/
The DataFlash is connected to the SPI interface. This means that in addition to communicate with the ATmega169 on the AVR Butterfly, it can also be accessed externally
through the ISP connector.
Note: If the DataFlash is to be accessed externally, the ATmega169 on the AVR Butterfly must be set to disable its own SPI interface to avoid contention on the
interface.

Figure 3-19. DataFlash

Figure 3-20. DataFlash Schematic

AVR Butterfly User Guide

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3.10

Piezo element

A piezo element is used to be able to play sounds on the AVR Butterfly. The piezo is
connected to PORTB5 on the ATmega169. And using the PWM, one can get the different frequencies required to play tunes.
Figure 3-21. Piezo Element

3.11

Battery

Model: CR2450
Nominal Voltage: 3.0 Volts
Nominal Capacity: 550 mAh (@0.2 mA Discharge Current, +23ºC)
Standard Discharge Current 0.2 mAh
Maximum recommended current under continuous discharge: 3 mA
Maximum recommended current under pulse discharge: 15 mA
Note: DO NOT recharge, short-circuit, disassemble, deform, heat or place the battery
near a direct flame. This battery containsflammable materials such as lithium
and organic solvent and performing any of the above actions could cause it to
ignite explode or become damaged.
The battery is protected by a schottky diode, this will prevent recharging of the battery if
external power is applied to PORTB or PORTD on the AVR Butterfly.

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AVR Butterfly User Guide

Section 4
Troubleshooting Guide

Table 4-1. Troubleshooting Guide
Problem

Reason

Solution

The LCD is not enabled in the AVR device.

Check the LCD initialization. (1)

The update frequency is not correct.

Verify that the clock prescaling correspond
with the clock-source. (1)

Your fingers are touching the LCD pins or
PORTD

Hold the AVR Butterfly on the edge of the
PCB, without touching the LCD pins

ISP cable not connected properly to the
ISP-footprint

Connect the ISP cable according to Figure
3-2

STK500 target voltage error.

Please refer to the ATmega169 datasheet
for the Serial Programming Voltage limits.
Adjust the target voltage on the STK500
board accordingly.

Cables not connected properly

Please refer to Section 3.2.2 “High-voltage
Parallel Programming” for correct parallel
programming set-up.

STK500 target voltage error.

Please refer to the ATmega169 datasheet
for the Parallel Programming Voltage
limits. Adjust the target voltage on the
STK500 board accordingly.

Nothing is displayed on the LCD.

Some segments on the LCD seems to
disappear

Serial Programming does not work

Parallel programming does not work

Notes: 1. See the Application Note “AVR065 LCD driver for the STK502 LCD” on how
to control the LCD-display, or the Application Note “AVR064 STK502 – A
temperature monitoring system with LCD output” Or program the application that comes with the AVR Butterfly

AVR Butterfly User Guide

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AVR Butterfly User Guide

Section 5
Technical Specifications
System Unit
Physical Dimension ………………………………................................…45 x 67 x 14 mm
Weight...………………………………………………………………..............................28 g

Operation Conditions
Temperature…………………………………………………..........................…...0ºC - 50ºC
If using external power……………………………………...........................……3,1V - 4,5V

Temperature measurement accuracy……………………………….......................…..±1ºC
Voltage reading accuracy…………………………………………..........................….±0,1V

AVR Butterfly User Guide

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AVR Butterfly User Guide

Section 6
Technical Support

For Technical support, please contact avr@atmel.com. When requesting technical support, please include the following information:
! Which target AVR device is used (complete part number)
! Target voltage and speed
! Clock source and fuse setting of the AVR
! Programming method
! Hardware revisions of the AVR tools, found on the PCB
! Version number of AVR Studio (This can be found in the AVR Studio help menu).
! PC operating system and version/build
! PC processor type and speed
! A detailed description of the problem

AVR Butterfly User Guide

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AVR Butterfly User Guide

Section 7
Schematics

On the following pages the complete schematics and assembly drawing of the AVR Butterfly revision A are shown.

AVR Butterfly User Guide

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A

B

C

1

VCP

1

2

GND

GND

2

RESET

RESET

VCC

PF0

PF1

GND

C106
10N_50V_X7R

R100
10K

VCC

3

PB7

GND

VCC

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
LCDCAP
PE0(RXD)
PE1(TXD)
PE2(AIN0/XCK)
PE3(AIN1)
PE4(SCL/USCK)
PE5(SDA/DI)
PE6(DO)
PE7
PB0(SS)
PB1(SCK)
PB2(MOSI)
PB3(MISO)
PB4(OC0)
PB5(OC1A)
PB6(OC1B)

GND

C103
100N_16V_X7R

GND

LCDCAP
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
PB0
PB1
PB2
PB3
PB4
PB5
PB6

2
BLM-21A102S

L100

PB[7..0] PB[7..0]

RST_FLASH

PE2

AVR_RxD

GND

1

(temperature sensor)

(voltage reader)

C105
1U_16V_X7R

Sensor_2

C102
100N_16V_X7R

PE[6..4] PE[6..4]

PE3

AVR_TxD

VCP

C101
100N_16V_X7R

1
2

PF[7..4]

1
2

PF[7..4]

2
1

3

PF0
PF1

C104
100N_16V_X7R

LCD19
LCD17

2

1
2
1
2

1
2

4

1
2
(COM3)PA3
(SEG0)PA4
(SEG1)PA5
(SEG2)PA6
(SEG3)PA7
(SEG4)PG2
(SEG5)PC7
(SEG6)PC6
(SEG7)PC5
(SEG8)PC4
(SEG9)PC3
(SEG10)PC2
(SEG11)PC1
(SEG12)PC0
(SEG13)PG1
(SEG14)PG0

PF4
PF5
PF6
PF7

4

VCC

GND

COM3
LCD27
LCD28
LCD29
LCD4
LCD6
LCD25
LCD26
LCD5
LCD8
LCD22
LCD23
LCD7
LCD10
LCD20
LCD21

5

5

ATMEGA169V-1MC

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33

U100

C100
100N_16V_X7R

COM0
COM1
COM2

64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
AVCC
AGND
AREF
(ADC0)PF0
(ADC1)PF1
(ADC2)PF2
(ADC3)PF3
(TCK/ADC4)PF4
(TMS/ADC5)PF5
(TDO/ADC6)PF6
(TDI/ADC7)PF7
GND
VCC
(COM0)PA0
(COM1)PA1
(COM2)PA2

PB7(OC2)
PG3(T1/SEG24)
PG4(T0/SEG23)
RESET
VCC
GND
XTAL2(TOSC2)
XTAL1(TOSC1)
PD0(ICP/SEG22)
PD1(INT0/SEG21)
PD2(SEG20)
PD3(SEG19)
PD4(SEG18)
PD5(SEG17)
PD6(SEG16)
PD7(SEG15)

4271C–AVR–04/05
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

-34
LCD15
LCD16
LCD18
LCD13
LCD11
LCD12
LCD14
LCD9

D

1

LCD[32..3]

COM[3..0]

TOSC2

TOSC1

LCD[32..3]

COM[3..0]

6

6

30-Apr-2003

MCU.Sch
7

TITLE: AVR Butterfly

Document number: A0301.3.1000.A

Date:

NORWAY

7075 TILLER

Vestre Rosten 79,

ATMEL Norway

7

09:34:10

1

8

Revision: A

PAGE:

8

of

4

A

B

C

D

Figure 7-1. Schematics, 1 of 4

AVR Butterfly User Guide

A

B

C

D

1

R208
100K

VCP

R205
100K

VCC

PB[7..0]

R206
100K

VCC

LCD[32..3]

2

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

3

4

SO
GND
VCC
WP

8 PB3
7
6
5

V_in

D200
BZX399-C1V8

GND

R209
300K

R212
1M5

AT45DB041B-SC-2.5

SI
SCK
RESET
CS

U201

Dataflash

H4042-DL

4

GND

LCD display
BP3
BP2
BP4
BP1
1K/1L/1M/6
1F/1G/1E/X2
2K/2J/2L/2M
1A/1J/1N/1D
3K/3J/3L/3M
X1/1B/1C/S6
3A/3B/3C/3D
1/2F/2E/2P
4K/4J/4L/4M
S1/2H/2G/2N
4A/4B/4C/4D
2A/2B/2C/2D
5K/5J/5L/5M
2/3F/3E/3P
5A/5B/5C/5D
S2/3H/3G/3N
9/6F/6E/6P
3/COL1/S7/7
S9/6H/6G/6N
S3/4F/4E/4P
6K/6J/6L/6M
4/4H/4G/4N
6A/6B/6C/6D
S4/5F/5E/5P
10/7F/7E/7P
5/5H/5G/5N
S10/7H/7G/7N
S5/COL2/S8/8
7K/7J/7L/7M
7A/7B/7C/7D

U200

Voltage reading

3
4

PB2 1
PB1 2

V_in

GND

PF1

PB0

LCD4
LCD5
LCD6
LCD7
LCD8
LCD9
LCD10
LCD11
LCD12
LCD13
LCD14
LCD15
LCD16
LCD17

COM2
COM3

GND

N egative Temperature R211
Coefficient (NTC)
NCP18WF104J03RB
resistor.

PF0

RST_FLASH

PB[7..0]

LCD[32..3]

COM[3..0]

3

0R

R200 2

Sensor_2

R207
100K

VCC

1

LCD29
LCD28
LCD27
LCD26
LCD25
LCD24
LCD23
LCD22
LCD21
LCD20
LCD19
LCD18

COM1
COM0

VCC

R210
3K3

VCP

GND

C200
100N_16V_X7R

Connects COL1 to
COL2 on the LCD

5

GND

5

R213
Light Dependent Resistor
NSL 19M51

34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18

1
2

COM[3..0]

1
2

1
2

6

Piezo element

6

VCC

KMT-1603

XC200

2
1
4
3
6
5
PB4
PB6
PB7
PE2
PE3

7

2

3

2

5-Mar-2003

Peripherals.Sch
7

TITLE: AVR Butterfly

P_XTAL1

PB5

2

8

8

Revision: A

PAGE:

TOSC2

TOSC1

P_XTAL1

PB[7..0]

PE3

PB[7..0]

11:01:58

R204
0R
NOT MOUNTED

R202 1
0R

PE2

PB[7..0]

Document number: A0301.3.1000.A

Date:

NORWAY

7075 TILLER

2

R203 1
0R

Vestre Rosten 79,

ATMEL Norway

IQD32.768KHZ

1

4

XC201

GND

R201
0R

BC847B
NOT MOUNTED

Q200
1

4 way joystick with GND
press function

SKRHABE010

Center
A
B
C
D
Common

SW200

3
2

1
2

2

1
2
1

1
2

2

2
1

1
2
1
2

1
2
1

1
2

AVR Butterfly User Guide
2

1

of

4

A

B

C

D

Figure 7-2. Schematics, 2 of 4

-35

4271C–AVR–04/05

A

B

C

1

TXD

RXD

2

AVR_RxD

AVR_TxD

GND

GND

0R

R302
2

0R

R303
2

3

R301
VC080514A300

1

R300
VC080514A300

1

3

BC847BPN

Q300A
2

R304
4,7K

VCC

2
1
6
1

4

4

1

2

GND

4,7K

R305

D300
BAT74

5

5

2
4,7K

R306
1

2
1

2

2
3

1
2
1
2

1
4

R307
4,7K

5

6

6

C300
1U_16V_X7R

R308
4,7K

Q300B
BC847BPN

VCC

4
3
1
2

4271C–AVR–04/05
1

-36
2

D

1

28-Jan-2003

RS232.Sch

7

TITLE: AVR Butterfly

Document number: A0301.3.1000.A

Date:

NORWAY

7075 TILLER

Vestre Rosten 79,

ATMEL Norway

7

12:34:59

PAGE:

3

8

Revision: A

8

of

4

A

B

C

D

Figure 7-3. Schematics, 3 of 4

AVR Butterfly User Guide

A

B

C

1

PF[7..4]

RESET

PB[7..0]

VCC_EXT

2

PF[7..4]

PB[7..0]

PF7

PF4
PF6
PF5

PB3
PB1

VCC
MOSI
GND

2

2
4
6

2
GND

PB2

1
3
5
7
9

2
4
6
8
10
RESET

VCC

GND

3

C403
100N_16V_X7R

JTAG
NOT MOUNTED

J402

2

GND

GND

R404
0R

2
COM0

P_XTAL1

0R
NOT MOUNTED

(BS2)1 R403

VCC

GND

GND

J404
KEY-3008-TR

C401
100N_16V_X7R

VCC_EXT

Batteryclip

0R

1 R401

R400
33R
NOT MOUNTED

3

VCC_EXT

1
Disable the Vsupply
to the JTAG

ISP_CONNECTOR
NOT MOUNTED

MISO
SCK
RESET

J403

D400
BAT54C

3
R402
0R
NOT MOUNTED

VCC

1
3
5

1

1
2

VCC

1
2

1
2

2

1
2

1
2

COM[3..0]

Coin Cell
BT400
Battery
CR-2450

4

P_XTAL1

These two pins are for
parallel programming

COM[3..0]

4

1
2

5

5

Voltage
reader

UART pins

USI

GND

GND

1
3
5
7
9

1
3
5
7
9

2 LCD16
4 LCD13
6 LCD12
8 LCD9
10

PE[6..4]

RXD

PE[6..4]

VCC_EXT

GND

6

LCD[32..3]

GND

C400
100N_16V_X7R

V_in

GND

7

19-Feb-2003

Connectors.Sch

7

TITLE: AVR Butterfly

Document number: A0301.3.1000.A

Date:

NORWAY

7075 TILLER

Vestre Rosten 79,

ATMEL Norway

V_in

TXD

C402
100N_16V_X7R

VCC_EXT

LCD[32..3]

VCC_EXT

PB[7..0]

VCC_EXT

PB[7..0]

(voltage reader)

GND

GND

PH_2,54_2 X 1
NOT MOUNTED

J407
1
2

PB1
PB3
PB5
PB7

PORTD
NOT MOUNTED

J401

PH_2,54_3 X 1
NOT MOUNTED

J406
1
2
3

2
4
6
8
10
PORTB
NOT MOUNTED

PH_2,54_4 X 1
NOT MOUNTED

J405
1 PE4
2 PE5
3 PE6
4

LCD15
LCD18
LCD11
LCD14

PB0
PB2
PB4
PB6

J400

6

1
2
1

AVR Butterfly User Guide
2

D

1

08:18:49

4

8

Revision: A

PAGE:

8

of

4

A

B

C

D

Figure 7-4. Schematics, 4 of 4

-37

4271C–AVR–04/05

Figure 7-5. Assembly Drawing, Top Side

-38
4271C–AVR–04/05

AVR Butterfly User Guide

Figure 7-6. Assembly Drawing, Back Side

AVR Butterfly User Guide

-39
4271C–AVR–04/05

7.1

Bill of Materials

Table 7-1. Bill Of Material_
Used

Part Type

Designator

Value

8

0R

R200 R201

0R

Manufacturer

Design specific

R202 R203
R302 R303
R401 R404
3

0R

R204 R402

0R

NOT MOUNTED

*

R403
1

1M5

R212

1M5

2

1U_16V_X7R

C105 C300

1u

1

3K3

R210

3k3

*

5

4,7K

R304 R305

4k7

*

MURATA

*

R306 R307
R308
1

10K

R100

10k

*

1

10N_50V_X7R

C106

10n

*

1

33R

R400

33R

NOT MOUNTED

4

100K

R205 R206

100k

*

100n

*

*

R207 R208
10

100N_16V_X7R

C100 C101
C102 C103
C104 C200
C400 C401
C402 C403

1

300K

R209

300K

1

AT45DB041B-SC-2.5

U201

4Mb

1

ATMEGA169V-1MC

U100

1

AVR BUTTERFLY A0301.3.1000.A

PCB500

1

BAT54C

D400

PHILIPS

*

1

BAT74

D300

PHILIPS

*

1

BC847B

Q200

PHILIPS

NOT MOUNTED

1

BC847BPN

Q300

PHILIPS

*

1

BLM-21A102S

L100

MUR

*

1

BZX399-C1V8

D200

PHILIPS

*

1

CR-2450

BT400

MAXELL

*

1

H4042-DL

U200

1

IQD32.768KHZ

XC201

1

ISP_CONNECTOR

1

KEY-3008-TR

-40
4271C–AVR–04/05

ATMEL

*

ATMEL

*
*

3V

*
32,768kHz

IQD Crystals

*

J403

SCOTT ELECT.

NOT MOUNTED

J404

KEYSTONE

*

AVR Butterfly User Guide

Table 7-1. Bill Of Material_(Continued)
Used

Part Type

Designator

Value

Manufacturer

Design specific

1

NCP18WF104J03RB

R211

100K

MURATA

*

1

NSL 19M51

R213

SILONEX

*

1

PH_2,54_2 X 1

J407

SCOTT ELECT.

NOT MOUNTED

1

PH_2,54_3 X 1

J406

SCOTT ELECT.

NOT MOUNTED

1

PH_2,54_4 X 1

J405

SCOTT ELECT.

NOT MOUNTED

3

PH_2,54_5 X 2

J400 J401

SCOTT ELECT.

NOT MOUNTED

J402
1

SKRHABE010

SW200

ALPS

*

1

KMT-1603

XC200

KINGSTATE

*

2

VC080514A300

R300 R301

1

U562246

M500

AVR Butterfly User Guide

*

-41
4271C–AVR–04/05

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Title                           : AVR Butterfly Evaluation Kit - User Guide
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Accompanying Data:

Atmel AVR Butterfly Motherboard PDF Operation & User’s Manual (Updated: Friday 25th of November 2022 09:20:49 AM)

Rating: 4.8 (rated by 30 users)

Compatible devices: ATMEGA256RFR2 Xplained Pro, AT91SAM9260-EK, SAM9753PIA-DK, ATBTLC1000 Xplained Pro, ATA8520-EK1-F, SAM4N Xplained Pro, SAMA5D3 Xplained, SAM R21 Xplained Pro.

Recommended Documentation:

Atmel AVR Butterfly: Text of Operation & User’s Manual

(Ocr-Read Version Summary of Contents, UPD: 25 November 2022)

Atmel AVR Butterfly: Recommended Instructions

LRA050XT75, Radian RTF, ASTEROID MINI, WSHP-DS-6, FRDM-KW41Z, WN-200R

Additional Information:

Popular Right Now:

Operating Impressions, Questions and Answers:

AVR Butterfly User Guide

Section 1

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

1.1

Section 2

2.1

Included Firmware………………………………………………………………………….2-3

2.2

Joystick Input ………………………………………………………………………………..2-4

2.3

Menu System ………………………………………………………………………………..2-5

2.4

Bootloader…………………………………………………………………………………….2-7

Section 3

Using the AVR Butterfly ……………………………………………………………. 3-11

3.1

Connectors………………………………………………………………………………….3-11

3.2

3.3

JTAG ………………………………………………………………………………………….3-15

3.4

LCD Display ………………………………………………………………………………..3-16

3.5

Joystick ………………………………………………………………………………………3-16

3.6

Sensors ………………………………………………………………………………………3-17

3.7

Connect to PC……………………………………………………………………………..3-20

3.8

USI …………………………………………………………………………………………….3-20

3.9

External DataFlash……………………………………………………………………….3-21

3.10 Piezo Element ……………………………………………………………………………..3-22

3.11 Battery………………………………………………………………………………………..3-22

Section 4

Troubleshooting Guide …………………………………………………………….. 4-25

Section 5

Technical Specifications …………………………………………………………… 5-27

Section 6

Technical Support ……………………………………………………………………. 6-29

Section 7

Complete Schematics ………………………………………………………………. 7-31

7.1

Bill of Materials…………………………………………………………………………….7-37

i

4271B-AVR-11/03