| General information |
| Type | Floating Point Unit (Co-processor) |
| Family | Intel 80387 |
| FPU part number | N80387SX-25 is an OEM/tray floating-point unit |
| Frequency ? | 25 MHz |
| Package | 68-pin plastic LCC |
| |
| S-spec numbers |
| |
Production processors |
| Part number |
SZ507 |
SZ660 |
| N80387SX-25 | + | + |
|
| |
| Architecture / Microarchitecture |
| Manufacturing process | 1 micron high-speed CHMOS IV technology |
| Low power features | Idle mode |
| |
| Electrical/Thermal parameters |
| V core ? | 5V ± 10% |
| Minimum/Maximum operating temperature ? | 0°C - 100°C |
| Minimum/Typical/Maximum power dissipation | 0.035 Watt (Idle mode) / 0.65 Watt / 0.83 Watt |
| |
| Notes on Intel N80387SX-25 |
- Implements ANSI/IEEE standard 754-1985 for binary floating-point arithmetic
- Idle mode is invoked automatically 3 clocks after completion of previous instruction
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