W78C438C Datasheet, PDF (15/16 Pages) Winbond – 8-BIT MICROCONTROLLER

W78C438C
CRYSTAL
C1
C2
R
16 MHz
24 MHz
33 MHz
30P
30P
−
15P
15P
−
10P
10P
6.8K
40 MHz
5P
5P
6.8K
Above table shows the reference values for crystal applications.
Notes:
1. For C1, C2, R components refer to Figure A.
2. It is recommended that the crystals be replaced with oscillators for applications above 35 MHz.
PACKAGE DIMENSIONS
84-pin PLCC
11
12
HD
D
1 84
75
74
E HE
32
33
Seating Plane
e
b
GD
54
53
A2 A
A
y
Symbol ^{Dimension in inches}
Dimension in mm
Min. Nom. Max. Min. Nom. Max.
A
0.185
4.70
A 1 ^0.020
0.51
A 2 ^{0.143 0.148} 0.153 ^{3.63 3.76 3.89}
b 1 ^{0.026 0.028 0.032 0.66} 0.71 ^0.81
b
0.016 0.018 0.022 0.41 0.46 0.56
E
c
0.006 0.008 0.012 0.15 0.20 0.30
D 1.148 1.153 1.158 29.17 29.29 29.41
E 1.148 1.153 1.158 29.17 29.29 29.41
e
0.044 0.050 0.056 1.12 1.27 1.42
G D 1.095 1.115 1.135 27.81 28.32 28.83
G E ^1.095 1.115 1.135 ^{27.81 28.32 28.83}
H D 1.180 1.190 1.200 29.98 30.23 30.48
H E 1.180 1.190 1.200 29.98 30.23 30.48
L
0.090 0.100 0.110 2.29 2.54 2.79
y
0.004
0.10
θ
0
10 0
10
Notes:
1. Dimension 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 spec.
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Publication Release Date: July 1998
Revision A1