80386DX Datasheet, PDF (2/17 Pages) Maxwell Technologies – 32-Bit Microprocessor

32-Bit Microprocessor
80386DX
TABLE 1. 80386DX PIN DESCRIPTION
PIN
SYMBOL
DESCRIPTION
1-7, 9, 10, 12, 13, 16, 17, 20, A16-A11, A9, A10, A7, A8, A5, A6, Address Bus
21, 24, 146-149, 152-154, 156- A3, A4, A2, A31-A28, A27-A25,
159, 161-163
A23-A22, A20-A18
8, 18, 19, 22, 23, 25, 28-30, 33,
36, 38-40, 47, 48, 65, 66, 68,
73, 76, 77, 82, 84, 86, 88, 103,
106, 107, 114, 125, 126, 129,
130,133, 134, 145, 155, 160,
164
NC
Not Connected
11, 15, 27, 32, 35, 43, 51, 53,
55, 57, 61, 70, 92, 95, 100, 111,
118, 122, 138, 142, 151
V_SS
Ground
14, 26, 31, 34, 44, 50, 52, 54,
56, 58, 62, 69, 91, 96, 99, 110,
117, 137, 141, 150,
V_CC
Power Supply
37
INTR
Interupt Request
41
NMI
Non-Maskable Interupt Request
42
PEREQ
Processor Extension Request
45
ERROR
Error Status
46
RESET
Reset
49
BUSY
Busy Status
59
LOCK
Bus Lock
60
W/R
Write/ Read
63
M/IO
Memory I/O
64
D/C
Data Control
67, 71, 72, 74
BE2, BE0, BE3, BE1
Byte Enables
78
BS16
Bus Size 16
75
NA
Next Address
79
HOLD
Bus Hold Request
80
CLK2
CPU Clock 2
81
ADS
Address Staus
83
READY
Bus Ready Input
85, 87, 89, 90, 93, 94, 97, 98,
102, 104, 105, 108, 109, 112,
113, 115, 116, 119, 120, 121,
123, 124, 127, 128, 131, 132,
135, 136, 139, 140, 143, 144,
D1, D2, D4, D0, D6, D3, D8, D5, D7, Data Bus
D10, D9, D12, D11, D14, D13, D15,
D16, D18, D17, D20, D22, D19,
D24, D21, D25,D23, D27, D26, D29,
D28, D31, D30,
101
HLDA
Bus Hold Acknowledge
1000557
12.17.01 Rev1
All data sheets are subject to change without notice 2
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