ABC Atmel AVR Maxi Development Board
The
ABC Maxi board has an open architecture design based on Atmel's AVR AT90S8535
RISC microcontroller and is ideal for developing new designs. ABC is an
acronym for AVR Basic Controller.
The board has 4 power MOSFETs, 4 opto isolated inputs, 8 10-bit analogue
inputs, prototyping area, up to 2MB add-on Flash memory and on-board RS485
transceiver make the ABC Maxi board ideally suited for prototyping networked
industrial control applications.
The board employs the ATMEL AVR RISC 8535 microcontroller technology.
Most instructions are single cycle giving up to 8 million instructions per
second on the ABC boards.
The ABC Maxi Atmel AVR Starter Kit includes a BASIC compiler, which allows
you to develop your code using the easy-to-learn BASIC programming language.
You can program the AVR on-board device in-system with the ABCEdit programming
software and connect to a PC's serial port (RS232), thanks to on-board RS232
level shifters and the AVR's built-in UART.
This user friendly software interfaces with ALL of the required tools
on the ABC Atmel AVR Boards to enable you to get started quickly without
a time consuming learning curve. You can download a trial version of ABCEdit
here.
Technical Specifications
Microcontroller
- ATMEL AVR AT90S8535
- Clock Speed - 8 MHz
Memory
- 8 Kb of In-System Programmable Flash (1000 write/erase cycles)
- 512 bytes internal SRAM
- 512 bytes EEPROM
Peripherals
- Two 8 bit Timer/Counters with 32768 Crystal for Real Time Clock
- One 16 bit Timer/Counter
- Programmable serial UART
- 8 channel, 10 bit Audio to Digital Converter (ADC)
- 32 programmable I/O lines
Special Features
- External and internal interrupt modes
- Real Time Clock
- Power saving modes
- Operating System - No build-in operating system or monitor. All
resources available to the user.
- Supply Voltage: 9Vdc / 200mA (we recommend a regulated power supply
Order Code PSU443)
Connectors and Functions
- Two Power Connectors to supply power to ABC
- Serial (RS232) Connector to PC. Standard 9 way straight through
cable is used. On board TTL/RS232 level converter. Plug the other end
into serial port of PC. RTS/CTS is available as well.
- Programming Connector for in-system programming. Connects to parallel
port of PC.
- RS485 connector. 4 pin screw terminal for connecting ABC to the
RS485 network. On board RS485 circuit.
- 8 pins I/O connector. This is a screw terminal connector for analogue
inputs (channels 0,1,2,3 and one I/O pin, which is selectable).
- Analogue input range 0-5V
- 12 pins I/O connector. This is a screw terminal connector for I/O
pins. I/Os are bi-directional with internal pull-up resistors. Output
buffers can sink 20mA current (direct LED drive)
- MOSFET outputs active low to GND capable of driving 8A current.
- LCD Connector. 14 pin DIL connector for 2-16 LCD display (Order
Code 30B06). If not
used for LCD can be used as I/O.
- 3.5mm Phone Jack for connection to an external speaker for toner
generation and speech synthesis through the onboard amplifier.
- Atmel 1/2Mb to 2Mb Data Flash onboard option.
- LCD 16 x 2 option as well
- On board 4 x 12A open drain MOSFETs and 4 Opto-isolated Inputs.
- For pin assignments on connectors see schematic diagram within software.
Physical dimensions
- ABC Maxi comes in a form of stand alone board and fits into standard
rail mounted 72 mm wide enclosure approx. size 120 x 72 x 20 mm.
Additional Information
ABC Maxi Starter Pack (Order Code ABCMAXISP)
The
ABC Maxi can be purchased as a 'Starter Pack' containing:
- One pre-assembled ABC Maxi Board
- One parallel and one serial leads for connection to your PC
- ABC Edit & Microcontroller Printed Manual
- CDROM containing:
-
AVR Edit Basic Controller / Inline Assembler Software on CDROM
for Windows 95, Windows '98, Windows ME and NT featuring an Assembler,
BASIC compiler and in-system programmer. A DOS version compiler
is also supplied.
- Help Files
- ABC Mini and Maxi schematics and PCB layout diagrams
- Sample programs
- Details of the ABC Internet Support Group / Users Forum
The pre-assembled ABC Maxi Boards are also available separately (Order
Code ABCMAXIB).
