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Last update: 20 September 2004

IC number:80386SX
IC function:32-bit microprocessor with 16-bit databus
Related components:8088, 80286 (predecessors), 80386DX (full version), 80486SX, 80486DX, 80486DX2 (successors), 80387SX (co-processor)

Component documentation
IC numberManufacturerDocumentation
i386SX (80386SX)IntelWeb page, Datasheet (PDF)

Component versions
IC numberPackageSpeedCBM part numberCBM part description
NG80386SX-16100-Pin QFP16 MHz390993-01CPU 80386SX-16
NG80386SX-20100-Pin QFP20 MHz390993-02CPU 80386SX-20

Positions
DevicePositionPackageSpeed
A2386U101QFP20 MHz
SL386SX CPU card w/cache DB1U101QFP20 MHz
SL286/SL386SX CPU card DB2U101QFP16 MHz
20 MHz
U101 (not installed)

Pinout
PinTypeNameSignal name
SL386SX CPU card DB1SL386SX CPU card DB2
1I/OD0CD0D0
2PowerVSSGND
3OutputHLDAunusedHLDA
4InputHOLDGNDHRQ
5PowerVSSGND
6InputNA#NNA_PU_JP
7InputREADY#NCRDYNRDY0320
8..10PowerVCCVCC
11..14PowerVSSGND
15InputCLK2CLK2386CLK
16OutputADS#386CB3NADS
17OutputBLE#386CB1NBLE_A0
18OutputA1CA1A1
19OutputBHE#386CB2NBHE
20N/CNCunused
21PowerVCCVCC
22PowerVSSGND
23OutputM/IO#386CB4M_NIO
24OutputD/C#386CB5D_NC_NS1
25OutputW/R#386CB6W_NR_NS0
26OutputLOCK#386CB7unused
27N/CNCunused
28InputFLT#NFLT_PU_JP
29..31N/CNCunused
32PowerVCCVCC
33InputRESETRESCPU
34InputBUSY#NBUSYCPUNBUSYCPU and RESCPU via U105
35PowerVSSGND
36InputERROR#NERRORCPU_PU
37InputPEREQPEREQCPU
38InputNMINMI
39PowerVCCVCC
40InputINTRINTR
41PowerVSSGND
42PowerVCCVCC
43..47N/CNCunused
48PowerVCCVCC
49..50PowerVSSGND
51..56OutputA2..A7CA2..CA7A2..A7
57PowerVCCVCC
58..62OutputA8..A12CA8..CA12A8..A12
63PowerVSSGND
64..66OutputA13..A15CA13..CA15A13..A15
67..68PowerVSSGND
69PowerVCCVCC
70OutputA16CA16A16
71PowerVCCVCC
72..76OutputA17..A21CA17..CA21A17..A21
77..78PowerVSSGND
79..80OutputA22..A23CA22..CA23A22..A23
81..83I/OD15..D13CD15..CD13D15..D13
84PowerVCCVCC
85PowerVSSGND
86..90I/OD12..D8CD12..CD8D12..D8
91PowerVCCVCC
92..96I/OD7..D3CD7..CD3D7..D3
97PowerVCCVCC
98PowerVSSGND
99..100I/OD2..D1CD2..CD1D2..D1

Copyright © 2003-2004 Ronald van Dijk - All rights reserved