AVR1 Processor

Description

MicroBus AVR1 Embedded processor boards are designed for embedded systems. The AVR1-32 uses the powerful and low cost Atmel AT Mega-32 microprocessor. mBus allows easy expansion of I/O capabilities including digital expansion, graphics LCD and high performance analog.

AVR1 Processors are In-System Programmable (ISP) via a low cost PC interface making both development and production system deployment. The AVR-32 includes a JTAG interface (TBD) for use with a low cost and powerful JTAG In Circuit Emulator making it ideal as a development board.

AVR 1	Processor	Flash PROM	RAM
AVR1-32	AT MEGA32	32KB	2KB

AVR1 block.gif (16612 bytes)

AVR1 processors are based on the powerful AVR AT Mega microprocessors; RISC-based Harvard architecture processors (separate program and data space) that execute most instructions in a single clock cycle at 16 MHz resulting in nearly 16MIPS performance. The instruction set is designed from the ground up to execute compiled C programs very quickly and efficiently. Their large on-chip Flash memory capacity allows significant size programs to be run, keeping system costs down.

AVR1 provides interfaces for digital I/O, Analog A/D in, RS232 serial, alphanumeric LCD and keypad interfaces, a powerful timer and PWM outputs allowing it to stand-alone in many applications. Systems requiring additional I/O can be expanded via the simple and powerful mBus to include other mBus I/O devices such as graphic LCD displays and high performance sensor interfaces. See our web site at www.micro-bus.com for available products and the mBus specification.

As an example of C coding efficiency, a complete instrument product application with 800 lines of C code including floating point math and I/O libraries fit in just 28% of the AT MEGA32. This application used the ImageCraft ICCAVR Pro compiler.

Despite their high performance, power consumption of AVR1 board at full speed is less than 100mW. Power saving modes reduce power consumption to the milliwatt level.

The AVR1-32 uses the JTAG interface for powerful and low cost programming and emulation. It provides on-chip hardware breakpoint and debug logic to be used with the low cost Atmel JTAG emulator.

AVR1-32 Features

	Based on single chip Atmel AVR Mega 32 processor
	16 MHz processor speed with near 16 MIPS performance
	32K in-system programmable FLASH memory
	2K RAM memory
	512 or 1K EEPROM memory
	On chip multiplier speeds integer and math floating point operations
	RS232 serial port
	10 to 18 bits of digital I/O
	Analog Input: 8 Channels
	10 bit resolution A/D
	LCD Alphanumeric and 16 button Keypad Interfaces
	PWM Output
	Three timer / counters with including Input Capture and Output Compare
	mBus I/O or standard or custom board expansion
	Switching regulator accepts unregulated +12V, provides power to mBus System
	Watch Dog Timer and brownout detector

Firmware Development

	ImageCraft C compiler and IDE support
	GNU GCC compiler support (Free)
	Other C compilers available from 3rd parties
	Bascom Basic
	Atmel ISP low cost programmer AVR ISP
	Atmel JTAG ICE Emulator

Atmel AVR Studio: Simulator, Programmer, Assembler (Free)

Data Sheets and Manuals

	AVR1 Data Sheet
	AVR1 User Manual
	Atmel AT Mega32 Data Sheet
	ImageCraft Web Site
	Atmel AVR Web Site

Specifications

DC Power	<100 mW (plus MicroBus boards)
Power Input	11.5-16.0 VDC @ 10ma
Digital I/O	12-20 bits (1)
Analog A/D in	8 channels 10 bits lin. 0-5.0V in
Digital I/O drive	20ma sink
Analog Ref.	+5V +/-3%
LCD Interface	14 pin connector to most LCDs
Keypad	4X4 matrix via 10 pin conn.
MicroBus I/F	MicroBus Master: D8, A6
Size	2.7” x 3.5” x 0.5”

(1) Less I/O if Microbus is used

Pricing

AVR1 Version	Qty. 1	Qty. 10	Qty. 100
AVR1-32	$95	$86	$79
ImageCraft Compiler	$199	-	-
AVR ISP Programmer	$29	-	-

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