604-00030 Parallax Inc, 604-00030 Datasheet - Page 13

• Manufacturer Part Number: 604-00030
• Description: IC FLOATING-POINT COPROC V2 8DIP
• Manufacturer: Parallax Inc

Specifications of 604-00030

• Processor Type: Floating-Point Co-Processor
• Voltage: 4.75 V ~ 5.25 V
• Mounting Type: Through Hole
• Package / Case: *
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Speed: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Stored Functions
Stored Functions
There are 1024 bytes of flash memory reserved on the uM-FPU for storing user functions and the mode paramaters.
Up to 64 user functions can be defined and saved by the user. Stored user functions have the advantage of
conserving space on the microcontroller and greatly reducing the communications overhead between the
microcontroller and the uM-FPU. In addition, certain instructions (e.g. IF_XXX, TABLE, POLY) are only valid in
user defined functions. Opcodes FE00 through FE3F are used to execute the stored user functions 0 through 63. The
Busy condition remains set while all of the opcodes in the stored function execute.
User function memory is divided into two sections: the header section and the data section. The header section is
located at program address 0x0000 and consists of 64 pairs of bytes that specify the offset to the data section and the
length of the stored function. The offset is specified as the address divided by 4, therefore all stored functions must
start on an even 4-byte boundary.
The data section contains the opcodes and data for the instructions that make up the user defined function. User
functions are programmed using the serial debug monitor. The uM-FPU IDE application supports the definition of
user functions. (Refer to uM-FPU IDE documentation.)
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Micromega Corporation
uM-FPU V2 Datasheet