Introduction

The GrandEVBavr is an Evaluation System. It was created to support You in building systems based on Atmel AVR microcontrollers. This flexible base will allow You to create and verify projects and "shark ideas" quick and easily. Our remedy idea "many ideas one solution" was implemented in this project. That is the reason why we've created Evaluation System, able to handle most of AVR microcontrollers in DIP or SMD (with special adapter) package (all adaptors are available at www.propox.com). Board was designed to give an access to all of the MCU ports (available on gold-pin connectors). Grand EVBavr include very flexible set of peripheral devices and extension connectors. In our opinion this set is great to start Your life with AVR as well as journey in the FABULOUS WAY to Your advanced designs and projects.

The list of peripherals starts from simple relays, LED diodes or Buzzer and goes to USB interface and SRAM memory. The most experienced users can build embedded units which can be equipped in Ethernet. That is why we've designed GrandEVBavr to support PROPOX LAN module (MMlan02).                                                    

List of interesting peripherals: LM32 thermometer, 2 relays, 2 potentiometers, reference power supply, adjustable reference voltage, ADC and DAC converters, RTC clock, EEPROM memory, FLASH memory, SRAM memory, four 7-segment displays, 8-channel driver, PS2 connector (keyboard or mouse or some of Your ideas), photoresistor, IR transmitter and receiver, USB interface, UART interface, 1Wire connector, I2C connector.

The most interesting are options provided by our evaluation board: common 2x16 alphanumeric display, graphical display(controller T6963C) or PROPOX LAN interface (MMlan02). All the system of GrandEVBavr is prepared to support ETHERNUT NutOS, and of course :) The most important for us users all available at All that peripheries are easily available on standard gold-pins connectors.                                                                      The Power supply solution? We did it for You. On a board is placed bridge and voltage regulators, so what will You need to provide power to GrandEVBavr? Just a basic AC od DC Power supply, the polarisation of supply will be checked and connected automatic by GrandEVBavr.

We thought about "masters of designs" bright and clever users, that is the reason why GrandEVBavr provide the prototype field and extension connector.
 

Supported Microcontrollers

Available Versions

GrandEVBavr Evaluation System in Lite Edition incude:

• GrandEVBavr board
• Propox CD with datasheet and software

GrandEVBavr Evaluation System in Advanced Edition incude:

• GrandEVBavr board 
• ATmega128 microcontroller with adaptor
• Peripheral cables (1-wire) for connection on board (10 pieces)  
• IDC10 cables for connection on board (2 pieces).
• ISP cable III programmer
• Power supply 9VDC/700mA
• LCD display
• Propox CD with datasheets and software
• Graphical display 128x64 with T6963C driver (optionally)
• MMlan02 module (optionally)

Technical Inforamtion

Features:

• Connectors for Atmel AVR Microcontrollers
• Programming connectors ISP (In-System Programming)
• Programming connectors JTAG for OCD (On-Chip Debugging)
• All microcontrollers ports available in easy way on standard gold-pin connectors
• Major supply voltage VTG adjust in range 1.25V - 5V
• Adjustable reference voltage VREF
• Holder for crystal oscillator
• Precision Clock Oscillator (optionally) 
• External RC oscillator
• 8 switches and 8 LED diodes
• Buzzer
• Photo Resistor
• 2 Relays
• 2 Potentiometers
• LM35 Thermometer
• IR transmitter and receiver
• MMlan02 module (optionally)
• USB interface
• UART interface
• 8-channel Driver
• PS2 socket for keyboard or mouse connection
• 1-WIRE connector
• I2C connector
• Alphanumeric display 2x16 characters
• 7-segment LED displays
• Graphical display 128x64 with T6963C driver (optionally)
• RTC clock (DS1307) with backup battery
• DAC and ADC converters control by I2C interface
• SRAM 128kB memory with address D-Type Latch chip
• Flash SPI memory
• EEPROM I2C memory
• CMOS series integrated circuits allowing to addressing and banking
• Prototype Field
• Extension connector (PC/ISA standard) for prototype boards
• Manual RESET
• LM317 voltage stabilizer
• Power switch
• DC/AC Power connector

  GrandEVBavr user manual                        ver. 1.00                 08/04/08

  AVR Studio 4 Software [html]

  Bascom AVR Software [html]

Power Supply

• Board should be power by AC voltage in range 7V to 12V or  DC voltage in range 9V to 15V, using standard 2.1mm diameter plug.
• 5V voltage source and 1.25V to 5V adjustable voltage source used to power microcontrollers and peripherals.
• Reference voltage source (stable and adjustable).