The uM-FPU V3.1 chip is a 32-bit floating point coprocessor that can be easily interfaced with any of the Parallax microcontrollers; providing support for 32-bit IEEE 754 floating point operations and 32-bit long integer operations. The uM-FPU supports both I2C and SPI connections. Application notes are also available on the Micromega website. 

Features:

• 32-bit IEEE 754 floating point
• 32-bit integer operations
• GPS serial input
• NMEA sentence parsing
• FFT operations
• 12-bit A/D Converters
• Serial input/output
• String handling
• Matrix operations
• SPI™ or I2C™ interface 
• Low power modes
• Package Type: 18-pin DIP

Key Specifications:

• Power Requirements: 4.75 to 5.5 VDC
• Communication: SPI and I2C
• Dimensions: .331 x .904 x .133 in (8.41 x 22.96 x .3.39 mm)
• Operating Temperature: -40 to +185 °F (-40 to +85 °C)

Downloads & Resources:
uM-FPU V3.1 Instruction Reference (.pdf)
uM-FPU V3.1 Datasheet (.pdf)
V3.1 Brochure (.pdf)
BASIC Stamp Support Files (.zip)
Application Notes (Off Site)