DS87C550 Datasheet, PDF (47/50 Pages) Dallas Semiconductor – EPROM High-Speed Micro with A/D and PWM

80-PIN QUAD FLAT PACK (14.0 MM X 20.0 MM)
DS87C550
DIM MIN MAX
A
-
3.40
A1 0.25
-
A2 2.55 2.87
B 0.30 0.45
C 0.13 0.23
D 23.70 24.10
D1 19.90 20.10
E 17.70 18.10
E1 13.90 14.10
e
0.80 BSC
L 0.65 0.95
NOTES:
1. DIMENSIONS D1 AND E1 INCLUDE MOLD MISMATCH,
BUT DO NOT INCLUDE MOLD PROTRUSION;
ALLOWABLE PROTRUSION IS 0.25 MM PER SIDE.
2. DETAILS OF PIN 1 IDENTIFIER ARE OPTIONAL BUT
MUST BE LOCATED WITHIN THE ZONE INDICATED.
3. ALLOWABLE DAMBAR PROTRUSION IS 0.08 MM
TOTAL IN EXCESS OF THE B DIMENSIONS;
PROTRUSION NOT TO BE LOCATED ON LOWER
RADIUS OR FOOT OF LEAD.
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