w78l812a Winbond Electronics Corp America, w78l812a Datasheet - Page 30

• Manufacturer Part Number: w78l812a
• Description: 8-bit Mcu Series 80c51-based
• Manufacturer: Winbond Electronics Corp America

12.3 44-pin PQFP
12.4 48-pin LQFP
11
1
37
48
Seating Plane
Seating Plane
12
44
36
1
See Detail F
e
See Detail F
H
D
e
D
H
D
D
b
22
34
b
12
25
y
33
y
E
A
A
1
2
H
E
A
24
13
A
A
1
2
E
H
A
E
L
L
c
1
- 30 -
L
c
θ
L
1
Detail F
Detail F
W78LE812/W78L812A
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
Notes:
H
H
A
A
A
b
c
D
E
L
L
flash.
protrusion/intrusion.
on final visual inspection spec.
e
y
θ
1. Dimensions D & E do not include interlead
2. Dimension b does not include dambar
3. Controlling dimension: Millimeters
4. General appearance spec. should be based
1
2
D
1
E
flash.
protrusion/intrusion.
on final visual inspection spec.
Symbol
0.002
0.075
0.01
0.004
0.390
0.390
0.025
0.510
0.051
0.510
0.025
Min. Nom. Max.
Dimension in inch
---
0
A
A
A
b
c
D
E
H
H
L
L
y
0
e
1
2
D
E
1
0.394
0.081
0.014
0.006
0.394
0.031
0.520
0.520
0.031
0.063
0.01
---
Dimension in mm
Min.
0.05
1.35
0.17
0.09
0.45
---
---
0
0.087
0.018
0.530
0.075
0.010
0.398
0.398
0.036
0.530
0.037
0.003
0.02
---
7
Nom.
1.40
0.20
7.00
7.00
0.50
9.00
9.00
1.00
0.60
0.08
3.5
---
---
---
1.295
12.95
Dimension in mm
0.05
1.90
0.25
0.101
9.9
0.635
12.95
9.9
Min.
0.65
---
0
Max.
1.60
0.15
1.45
0.27
0.20
0.75
---
7
Nom.
10.00
10.00
0.25
2.05
0.35
0.152
13.2
0.80
13.2
0.8
1.6
---
13.45
13.45
2.20
0.45
1.905
Max.
0.254
10.1
0.952
0.5
10.1
0.95
0.08
7
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