Package characteristics
STM32F405xx, STM32F407xx
Figure 81. LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package outline
Seating plane
C
A
A2 A1
c
b
0.25 mm
gage plane
ccc
C
k
D
D1
A1
L
D3
L1
108
73
72
109
E3 E1
E
144
37
Pin 1
identification
1
36
ME_1A
e
1. Drawing is not to scale.
Table 93. LQFP144, 20 x 20 mm, 144-pin low-profile quad flat package mechanical data
millimeters
Typ
inches(1)
Symbol
Min
Max
Min
Typ
Max
A
A1
A2
b
1.600
0.150
1.450
0.270
0.200
22.200
20.200
0.0630
0.0059
0.0571
0.0106
0.0079
0.874
0.050
1.350
0.170
0.090
21.800
19.800
0.0020
0.0531
0.0067
0.0035
0.8583
0.7795
1.400
0.220
0.0551
0.0087
c
D
22.000
20.000
17.500
22.000
20.000
17.500
0.500
0.8661
0.7874
0.689
D1
D3
E
0.7953
21.800
19.800
22.200
20.200
0.8583
0.7795
0.8661
0.7874
0.6890
0.0197
0.0236
0.0394
0.8740
0.7953
E1
E3
e
L
0.450
0.600
0.750
0.0177
0.0295
L1
1.000
164/185
DocID022152 Rev 4
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