80387DX 데이터 시트보기 (PDF) - MAXWELL TECHNOLOGIES
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80387DX Datasheet PDF : 17 Pages
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Math Coprocessor
80387DX
TABLE 1. PINOUT DESCRIPTION
PIN
SYMBOL
DESCRIPTION
1, 12, 19, 21, 35, 49, 53, 56
VSS
Ground
2, 13, 20, 32, 36, 39, 52, 68
VCC
Positive Power Supply
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
CKM
Clock Mode
43
386CLK2
386 CPU Clock 2
44
387CLK2
387 MCP Clock 2
45
RESETIN
System Reset
46
NC
Not Connected
47 59
Tie High
Tie High
48
READY
Bus Ready Input
50
CMD0
Command
51
ADS
Address Strobe
54
NPS2
MCP Select #2
55
NPS1
MCP Select #1
57
W/R
Write/Read
58
STEN
Status Enable
60
READYO
Ready Output
61
BUSY
Busy Status
62
ERROR
Error Status
63
PEREQ
Processor Extension Request
TABLE 2. ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
MIN
MAX
UNIT
Voltage, any pin, with respect to Ground
Power Dissipation
Storage Temperature Range
Operating Temperature Range
Lead Temperature (soldering 10 seconds)
VCC
-0.5
VCC+0.5
V
PD
--
1.5
W
TS
-65
150
°C
TA
-55
125
°C
--
260
°C
05.07.02 REV 1
All data sheets are subject to change without notice 2
©2002 Maxwell Technologies
All rights reserved.
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