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> Micromega um-fpu V3.1 floating point coprocesor pic avr
Micromega um-fpu V3.1 floating point coprocesor pic avr
The new uM-FPU V3.1 floating point coprocessor has the speed and features required to support today's advanced microcontroller applications.The uM-FPU V3.1 chip easily interfaces to virtually any microcontroller using an SPIâ„¢ or I2Câ„¢ interface.
Many microcontrollers used in embedded systems lack floating point support, but a wide range of sensors available today require additional computations or data transformation to provide accurate results.
Software math libraries often use large amounts of memory on microcontrollers, particularly as more complex library functions are used. The uM-FPU V3.1 chip offloads this overhead, and provides a comprehensive set of floating point operations, including advanced functions such as FFT, matrix operations and NMEA sentence parsing.
Development support is provided by the uM-FPU V3 IDE which takes traditional math expressions and automatically produces uM-FPU code targeted for one of the many microcontrollers and compilers supported. The IDE also interacts with the built-in debugger on the uM-FPU V3.1 chip to assist in debugging and testing uM-FPU code.
For a printed summary of uM-FPU V3.1 features, see uM-FPU V3.1 Brochure.
For a more detailed list of uM-FPU V3.1 features, and changes from V3.0, see uM-FPU V3.1 Release Notes
32-bit Floating Point and 32-bit Integer
A comprehensive set of 32-bit floating point and 32-bit integer operations are provided.
See the uM-FPU V3.1 datasheet for details.
User-defined functions can be stored in Flash and EEPROM. Flash functions are programmed through the SERIN/SEROUT pins using the uM-FPU V3 IDE. The EEPROM functions can be programmed at run-time. Conditional execution is supported using conditional branch and jump instructions.
A matrix can be defined as any set of sequential registers. The MOP instruction provides scalar operations, element-wise operations, matrix multiply, inverse, determinant, count, sum, average, min, max, copy and set operations.
Provides support for Fast Fourier Transforms. Used as a single instruction for data sets that fit in the available registers, or as a multi-pass instruction for working with larger data sets.
When not used for debugging, the SERIN and SEROUT pins can be used for serial I/O. For example, SERIN can be used to read data from a GPS, and SEROUT can be used to drive an LCD.
The serial input can be set to scan for valid NMEA sentences with optional checksum. Multiple sentences can be buffered for further processing.
String instructions are provided to insert and append substrings, search for fields and substrings, convert from floating point or long integer to a substring, or convert from a substring to floating point or long integer. For example, the string instructions could be used to parse a GPS NMEA sentence, or format multiple numbers in an output string.
Instructions are provided to load 32-bit values from a table or find the index of a floating point or long integer table entry that matches a specified condition.
Instructions are provided to support multiply and accumulate and multiply and subtract operations.
Two 12-bit A/D channels are provided. The A/D conversion can be triggered manually, through an external input, or from a built-in timer. The A/D values can be read as raw values or automatically scaled to a floating point value. Data rates of up to 10,000 samples per second are supported.
Timers can be used to trigger the A/D conversion, or to track elapsed time. A microsecond and second timer are provided.
An external input can be used to trigger an A/D conversion, or to count external events.
When the uM-FPU V3 chip is not busy it automatically enters a power saving mode. It can also be configured to enter a sleep mode which turns the device off while preserving register contents. In sleep mode the uM-FPU V3 chip consumes negligible power.
Operates at full speed from internal oscillator. No external components required.
Pin Diagram and Pin Descriptions
Serial Output, Debug Monitor Tx
Serial Input, Debug Monitor Rx
Digital Output 0, Busy/Ready Status
Functional description and hardware specifications.
Detailed descriptions for each instruction.
uM-FPU V3.1 Opcode Definitions
A template for creating symbol definitions for all uM-FPU V3.1 opcodes, MOP operations, and FFT operations.
Please see MicroMega's website for a more thorough description of this product at http:// /umfpu-v3.html.
