604-00050 Parallax Inc, 604-00050 Datasheet - Page 19

• Manufacturer Part Number: 604-00050
• Description: IC FLOATING-PT COPROC V3 18-DIP
• Manufacturer: Parallax Inc

Specifications of 604-00050

• Processor Type: Floating-Point Co-Processor
• Voltage: 2.7V ~ 5.5V
• Mounting Type: Through Hole
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Speed: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Flash Memory
There are 2304 bytes of Flash memory reserved on the uM-FPU for storing user-defined functions and the mode
parameters. Up to 64 user-defined functions can be stored in Flash memory. User-defined 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. BRA, JMP, TABLE, POLY) are only valid
in user-defined functions. The FCALL instruction is used to call the user-defined functions stored in Flash memory.
The Busy condition remains set while all of the instructions in the called function execute.
Flash memory for user-defined functions 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 16-bit words (256 bytes) that specify
the offset to the data section and the length of the stored function. The data section consists of 2048 bytes and
contains the user-defined function code. User-defined functions stored in Flash memory are programmed using the
serial debug monitor. The uM-FPU V3 IDE (Integrated Development Environment) provides support for defining
and programming user-defined functions. (Refer to uM-FPU V3 IDE documentation.)
Micromega Corporation
Header
Data
00FF
08FF
0000
0100
Data
Data
Data
2032
0
0
Offset
Offset
Offset
60
0
4
2033
Data
Data
Data
1
1
2034
Data
Data
2
Size
Size
Size
60
0
4
2035
Data
Data
3
2036
Data
Data
4
Offset
Offset
61
1
2037
Data
Data
5
Flash Memory Layout
2038
Data
Data
6
19
Size
Size
61
1
2039
Data
Data
7
.
.
.
.
.
.
2040
Data
Data
8
Offset
Offset
62
2
2041
Data
Data
9
2042
Data
Data
10
Size
Size
62
2
2043
Data
Data
11
uM-FPU V3.1 Datasheet
Mode
2028
Data
Data
12
0
Offset
Offset
Offset
59
63
3
Mode
2029
Data
Data
13
1
Flash Memory
Mode
2030
Data
Data
14
2
Size
Size
Size
59
63
3
Mode
2031
Data
Data
15
3