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SPI Connection
I2C Connection
Application Notes
The uM-FPU V2 floating point coprocessor is easily interfaced with Microchip PICmicro microcontrollers to provide support for 32-bit floating point and 32-bit long integer operations. The PICmicro can be interfaced to the uM-FPU V2 using either a 2-Wire SPI or I2C connection.

uM-FPU V2 Datasheet
Functional description and hardware specifications.
560 KB PDF Jun 21, 2005
uM-FPU V2 Instruction Set
Detailed descriptions for each instruction.
644 KB PDF Aug 16, 2006
Using uM-FPU V2 with the PICmicro
Reference guide for using uM-FPU V2 with PICmicro microcontrollers.
232 KB PDF Jan 11, 2005
See Application Notes for descriptions and sample programs that show how to use the uM-FPU in various applications.

PICmicro Support Software for uM-FPU V2
Interface routines for the PICmicro microcontroller.
Examples use the Microchip MPASM assembler.
152 KB ZIP May 19, 2006
See the uM-FPU V2 IDE for a description of the uM-FPU V2 Integrated Development Environment (IDE). The uM-FPU V2 IDE provides an expression compiler, debugger and function programmer to assist in developing and debugging code for the uM-FPU floating point coprocessor.

Connecting the PICmicro using 3-wire SPI

Connecting the PICmicro using 2-wire SPI

Connecting the PICmicro using I2C

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