W78E51B Winbond, W78E51B Datasheet - Page 21

• Manufacturer Part Number: W78E51B
• Description: 8-BIT MTP MICROCONTROLLER
• Manufacturer: Winbond

PACKAGE DIMENSIONS
40-pin DIP
44-pin PLCC
E
1
L
A
A
2
40
1
S
L
Seating Plane
17
7
18
6
e
B
B
G
H
D
1
1
D
D
D
44
b
b
1
e
1
40
28
29
39
A
E
A
2
1
A
H
E
21
20
y
A
1
Base Plane
Seating Plane
- 21 -
c
a
G
E
e
E
A
Preliminary W78E51B
Publication Release Date: December 1998
c
Notes:
Symbol
1. Dimension D & E do not include interlead
2. Dimension b1 does not include dambar
3. Controlling dimension: Inches
4. General appearance spec. should be based
A
A
b
b
D
G
A
c
E
e
G
H
H
L
y
protrusion/intrusion.
flash.
on final visual inspection spec.
Notes:
1
2
1
E
D
D
Symbol
E
1. Dimension D Max. & S include mold flash or
2. Dimension E1 does not include interlead flash.
3. Dimension D & E1 include mold mismatch and
4. Dimension B1 does not include dambar
5. Controlling dimension: Inches.
6. General appearance spec. should be based on
A
A
B
c
D
E
E
e
L
a
e
S
A
B
are determined at the mold parting line.
tie bar burrs.
protrusion/intrusion.
final visual inspection spec.
1
2
1
1
1
A
0.020
0.145
0.026
0.016
0.008
0.648
0.648
0.590
0.590
0.680
0.680
0.090
Dimension in inch
Min. Nom. Max.
0.050
0.048
Dimension in inch
0.010
0.150
0.016
0.008
0.540
0.090
0.120
0.590
0.630
Min. Nom.
0.150
0.028
0.018
0.010
0.653
0.653
0.610
0.610
0.690
0.690
0.100
0
BSC
0.050
0.010
2.055
0.600
0.155
0.018
0.545
0.100
0.130
0.650
0.185
0.155
0.032
0.022
0.014
0.658
0.658
0.630
0.630
0.700
0.700
0.110
0.004
0.160
0.022
0.054
0.014
2.070
0.610
0.550
0.110
0.140
0.670
.
0.210
0.090
Max.
15
0.508
0.406
0.203
16.46
16.46
14.99
14.99
17.27
17.27
2.296
3.683
Dimension in mm
0.66
Min.
1.27
14.986
Dimension in mm
13.72
2.286
3.048
16.00
0.254
3.81
0.406
1.219
0.203
Min.
15.49
15.49
0.457
16.59
16.59
17.53
17.53
0.711
0.254
Nom.
3.81
2.54
0
BSC
Nom.
15.24
52.20
13.84
3.302
16.51
3.937
0.457
1.27
0.254
2.54
3.937
16.71
16.71
16.00
16.00
17.78
17.78
2.794
Revision A1
4.699
0.813
0.559
0.356
Max.
0.10
15.494
4.064
0.559
1.372
0.356
52.58
2.794
17.01
5.334
13.97
3.556
Max.
2.286
15