w78c31b Winbond Electronics Corp America, w78c31b Datasheet - Page 13

• Manufacturer Part Number: w78c31b
• Description: 8-bit Microcontroller
• Manufacturer: Winbond Electronics Corp America

Package Dimensions, continued
44-pin PLCC
44-pin QFP
11
1
L
Seating Plane
Seating Plane
17
7
12
44
18
6
See Detail F
e
e
H
D
D
G
H
D
1
D
D
44
b
22
34
b
b
1
y
40
28
33
E
A
A
2
1
29
39
H
E
A
A
E
A
2
1
A
H
E
y
L
c
L
1
- 13 -
c
G
Detail F
E
Publication Release Date: October 1997
Notes:
Notes:
Symbol
1. Dimension D & E do not include interlead
2. Dimension b does not include dambar
3. Controlling dimension: Millimeter
4. General appearance spec. should be based
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
H
H
A
A
b
c
D
E
L
flash.
protrusion/intrusion.
on final visual inspection spec.
e
L
A
A
A
y
b
b
c
D
E
e
G
G
H
H
L
protrusion/intrusion.
y
flash.
on final visual inspection spec.
1
2
D
E
1
1
2
1
E
D
E
D
Dimension in inch
0.020
0.145
0.026
0.016
0.008
0.648
0.648
0.590
0.590
0.680
0.680
0.090
0.025
Dimension in inch
0.002
0.075
0.01
0.004
0.390
0.390
0.510
0.025
0.051
0.510
Min. Nom. Max.
Min. Nom. Max.
---
0
0.050
0.150
0.028
0.018
0.010
0.653
0.653
0.610
0.610
0.690
0.690
0.100
0.031
0.520
0.081
0.014
0.006
0.394
0.394
0.520
0.031
0.063
0.01
---
BSC
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
0.530
0.087
0.018
0.010
0.398
0.398
0.036
0.530
0.037
0.075
0.003
0.02
7
---
0.508
0.406
0.203
16.46
16.46
14.99
14.99
17.27
17.27
2.296
W78C31B
3.683
Dimension in mm
Dimension in mm
0.66
Min.
12.95
1.295
0.05
1.90
0.25
0.101
9.9
9.9
0.635
12.95
Min.
0.65
0
---
1.27
15.49
15.49
0.457
16.59
16.59
17.53
17.53
0.711
0.254
Nom.
3.81
2.54
Nom.
10.00
2.05
0.35
10.00
0.25
0.152
0.80
13.2
1.6
13.2
0.8
---
BSC
3.937
16.71
16.71
16.00
16.00
17.78
17.78
2.794
Revision A3
4.699
0.813
0.559
0.356
Max.
0.10
10.1
10.1
0.952
2.20
0.45
13.45
1.905
Max.
0.5
0.254
13.45
0.95
0.08
7
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