ST72324Lxx
PACKAGE MECHANICAL DATA (Cont’d)
Figure 86. 32-Pin Plastic Dual In-Line Package, Shrink 400-mil Width
b2
D
A2 A
A1
L
C
b
e
mm
inches
Dim.
Min Typ Max Min Typ Max
E
eC
A 3.56 3.76 5.08 0.140 0.148 0.200
A1 0.51
0.020
A2 3.05 3.56 4.57 0.120 0.140 0.180
b 0.36 0.46 0.58 0.014 0.018 0.023
E1
b1 0.76 1.02 1.40 0.030 0.040 0.055
eA
eB
C 0.20 0.25 0.36 0.008 0.010 0.014
D 27.43
28.45 1.080 1.100 1.120
E 9.91 10.41 11.05 0.390 0.410 0.435
E1 7.62 8.89 9.40 0.300 0.350 0.370
e
1.78
0.070
eA
10.16
0.400
eB
12.70
0.500
eC
1.40
0.055
L 2.54 3.05 3.81 0.100 0.120 0.150
Number of Pins
N
32
13.2 THERMAL CHARACTERISTICS
Symbol
RthJA
PD
TJmax
Ratings
Package thermal resistance (junction to ambient)
LQFP48 7x7
LQFP44 10x10
LQFP32 7x7
SDIP32 200mil
Power dissipation 1)
Maximum junction temperature 2)
Value
80
52
70
50
500
150
Unit
°C/W
mW
°C
Notes:
1. The maximum chip-junction temperature is based on technology characteristics.
2. The maximum power dissipation is obtained from the formula PD = (TJ -TA) / RthJA.
The power dissipation of an application can be defined by the user with the formula: PD=PINT+PPORT where PINT is
the chip internal power (IDDxVDD) and PPORT is the port power dissipation depending on the ports used in the applica-
tion.
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