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Last update: 20 September 2004

IC number:80387DX
IC function:Floating-point co-processor
Related components:8087, 80287 (predecessors), 80387SX (limited version), 80486DX, 80486DX2 (successors), 80386DX (main processor)

Component documentation
IC numberManufacturerDocumentation
i387DX (80387DX)IntelDatasheet (PDF)

Component versions
IC numberPackage
A80387DX68-pin Ceramic PGA 11 × 11

Positions
DevicePositionPackage
PC60-IIIU83 (not installed)PGA

Pinout
PinTypeName
A2I/OD9
A3..A4I/OD11..D12
A5I/OD14
A6PowerVCC
A7I/OD16
A8I/OD18
A9PowerVCC
A10I/OD21
B1I/OD8
B2PowerVSS
B3I/OD10
B4PowerVCC
B5I/OD13
B6I/OD15
B7PowerVSS
B8I/OD17
B9..B10I/OD19..D20
B11I/OD22
C1..C2I/OD7..D6
C10I/OD23
C11PowerVSS
D1..D2I/OD5..D4
D10..D11I/OD24..D25
E1PowerVCC
E2PowerVSS
E10..E11I/OD26..D27
F1PowerVCC
F2InputVSS
F10PowerVCC
F11PowerVSS
G1..G2I/OD3..D2
G10..G11InputD28..D29
H1..H2InputD1..D0
H10..H11I/OD30..D31
J1PowerVSS
J2PowerVCC
J10PowerVSS
J11InputCKM
K1OutputPEREQ
K2OutputBUSY#
K3InputTIE HIGH
K4InputW/R#
K5PowerVCC
K6InputNPS2
K7InputADS#
K8InputREADY#
K9N/CN/C
K10InputCPUCLK2
K11InputNUMCLK2
L2OutputERROR#
L3OutputREADYO#
L4InputSTEN
L5PowerVSS
L6InputNPS1#
L7PowerVCC
L8InputCMD0#
L9InputTIE HIGH
L10InputRESETIN

Copyright © 2004 Ronald van Dijk - All rights reserved