W27C020 Datasheet, PDF (13/14 Pages) Winbond – 256K X 8 ELECTRICALLY ERASABLE EPROM

Preliminary W27C020
PACKAGE DIMENSIONS
32-pin P-DIP
32
E1
1
S
A A²
L
D
B
e1
B1
17
16
E
A1 _{Base Plane}
Seating Plane
a
eA
Dimension in Inches Dimension in mm
Symbol _{Min. Nom. Max. Min. Nom. Max.}
A
0.210
5.33
A 1 ^0.010
0.25
A 2 0.150 ^{0.155 0.160} 3.81 3.94 4.06
B
0.016 0.018 0.022 0.41 0.46 0.56
B 1 ^{0.048 0.050 0.054 1.22 1.27 1.37}
c
0.008 0.010 0.014 0.20 0.25 0.36
D
1.650 1.660
41.91 42.16
E
0.590 0.600 0.610 14.99 15.24 15.49
E1
0.545 0.550 0.555 13.84 13.97 14.10
e 1 0.090 0.100 0.110 2.29 2.54 2.79
L
0.120 0.130 0.140 3.05 3.30 3.56
a
0
15
0
15
e A ^0.630 0.650 ^{0.670 16.00} 16.51 ^17.02
S
0.085
2.16
Notes:
1. Dimensions D Max. & S include mold flash or tie bar burrs.
c 2. Dimension E1 does not include interlead flash.
3. Dimensions D & E1 include mold mismatch and are
determined at the mold parting line.
4. Dimension B1 does not include dambar protrusion/intrusion.
5. Controlling dimension: Inches.
6. General appearance spec. should be based on final visual
inspection spec.
32-Lead PLCC
4
5
HE
E
1 32
30
29
D HD
13
14
20
L
θ
Seating Plane
e
b
b1
GE
21
A2
A
A1
y
GD
c
Symbol
A
A1
A2
b1
b
c
D
E
e
GD
GE
HD
HE
L
y
θ
Dimension in Inches
Min. Nom. Max.
0.140
0.020
0.105
0.110 0.115
0.026
0.028 0.032
0.016
0.018 0.022
0.008
0.010 0.014
0.547
0.550
0.553
0.447
0.450
0.453
0.044
0.050
0.056
0.490
0.510
0.530
0.390
0.410
0.430
0.585
0.590
0.595
0.485
0.490
0.495
0.075
0.090
0.095
0.004
0°
10°
Dimension in mm
Min. Nom. Max.
3.56
0.50
2.67
2.80
2.93
0.66
0.71
0.81
0.41
0.46
0.56
0.20
0.25
0.35
13.89
13.97
14.05
11.35
11.43
11.51
1.12
1.27
1.42
12.45
12.95
13.46
9.91
10.41
10.92
14.86
14.99
15.11
12.32
12.45
12.57
1.91
2.29
2.41
0.10
0°
10°
Notes:
1. Dimensions D & E do not include interlead flash.
2. Dimension b1 does not include dambar protrusion/intrusion.
3. Controlling dimension: Inches.
4. General appearance spec. should be based on final
visual inspection sepc.
- 13 -
Publication Release Date: September 1998
Revision A1