Maker : Maxwell Technologies
Part No. : 80387DX

  Datasheet PDF : 80387DX.pdf
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Product Information

80387DX Math Coprocessor 80387 Memory Logic Diagram FEATURES: • 80-Bit numeric processor • RAD-PAK® radiation hardened against natural space radiation • Total dose hardness: - > 100 krad (Si) - dependant upon space mission • Single Event Effects: - SEU Threshold is ~ 3.38 MeV/mg/cm2 - SEL Threshold = 37.1 - 59.9 MeV/mg/cm2 • Package: 68-pin RAD-PA® quad flat pack • Eight 80-bit numeric registers, usable as individual addressable general registers or as a register stack • Data types include: - 32-, 64-, 80-bit floating point - 32-, 64-bit integers - 18-digit BCD operands • 5 V Only power • Built-in exception handling • Upward object code compatible with All 80X87DX microprocessors • Full-range transcendental operations for SINE, COSINE, TANGENT, ARCTANGENT and LOGARITHM DESCRIPTION: w w w . at d sh a et e u. 4 om c Maxwell Technologies' patented RAD-PAK packaging technology incorporates radiation shielding in the microcircuit package. It eliminates the need for box shielding while providing the required radiation shielding for a lifetime in orbit or space mission. In a GEO orbit, RAD-PAK provides greater than 100 krad (Si) radiation dose tolerance. This product is available with screening up to Class S. 05.07.02 REV 1 All data sheets are subject to change without notice 1 (858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com ©2002 Maxwell Technologies All rights reserved. www.DataSheet4U.com Maxwell's 80387DX high speed microcircuit features a greater than 100 kilorad (Si) total dose tolerance. Using Maxwell's radiation hardened RAD-PAK® packaging technology, the 80387DX is a high-performance numerics processor that extends the 80386DX architecture with floating point, extended integer and BCD data types. The computing system fully conforms to the ANSI/IEEE floating-point standard. Using a numerics oriented architecture, the 80387DX adds over seventy mnemonics to the 80386DX instruction set, making the 80386DX/80387DX a complete solution for high-performance numerics processing. Math Coprocessor TABLE 1. PINOUT DESCRIPTION PIN 1, 12, 19, 21, 35, 49, 53, 56 2, 13, 20, 32, 36, 39, 52, 68 SYMBOL VSS VCC Ground Positive Power Supply DESCRIPTION 80387DX 3-11, 18, 22-31, 33, 34, 37, D4-D12, D15, D16-25, D26, D27, Data Bus 38, 40, 41, 64-67 D28, D29, D30, D31, D0-D3 42 43 44 45 46 47 59 48 50 51 54 55 57 58 60 61 62 63 CKM 386CLK2 387CLK2 RESETIN NC Tie High READY CMD0 ADS NPS2 NPS1 W/R STEN READYO BUSY ERROR PEREQ Clock Mode 386 CPU Clock 2 387 MCP Clock 2 System Reset Not Connected Tie High Bus Ready Input Command Address Strobe MCP Select #2 MCP Select #1 Write/Read Status Enable Ready Output Busy Status Error Status Processor Extension Request Memory TABLE 2. ABSOLUTE MAXIMUM RATINGS PARAMETER Voltage, any pin, with respect to Ground Power Dissipation Storage Temperature Range Operating Temperature Range Lead Temperature (soldering 10 seconds) SYMBOL VCC PD TS TA MIN -0.5 --65 -55 -MAX VCC+0.5 1.5 150 125 260 UNIT V W °C °C °C 05.07.02 REV 1 All data sheets are subject to change without notice 2 ©2002 Maxwell Technologies All rights reserved. Math Coprocessor TABLE 3. DELTA LIMITS PARAMETER ILI ILO ICC CLK2 = 32 MHz ICC CLK2 = 50 MHz VARIATION ± 1.5 µ A ±1.5 µ A ±25 mA ±39 mA 80387DX TABLE 4. RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage Input Low Voltage Input High Voltage Operating Temperature SYMBOL VCC VIL VIH TA MIN 4.75 -0.3 2.0 -55 MAX 5.25 0.8 VCC +0.3 125 UNIT V V V °C Memory TABLE 5. 80387DX DC ELECTRICAL CHARACTERISTICS (VCC = 4.75V TO 5.25V; TA = -55 TO +125°C, UNLESS OTHERWISE SPECIFIED) PARAMETER Input Low Voltage Input High Voltage 386 CLK2 Input Low Voltage 386 CLK2 Input High Voltage Output Low Voltage Output High Voltage SYMBOL VIL1 VIH1 VCL VCH VOL VOH IOL = 4 mA, D0-D31, IOL = 2.5 mA READYO , ERROR, BUSY, PEREQ IOH = -1 mA, D0-D31, IOH = -0.6 mA READYO, READYO, ERROR, BUSY, PEREQ 0V < VIN < VCC 0.45V < VOUT < VCC CLK2 = 32 MH...

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