Information

DocID15818 Rev 11 157/178
STM32F20xxx Package characteristics
177
Figure 81. LQFP144, 20 x 20 mm, 144-pin low-profile quad
flat package outline
1. Drawing is not to scale.
e
IDENTIFICATION
PIN 1
GAUGE PLANE
0.25 mm
SEATING
PLANE
D
D1
D3
E3
E1
E
K
ccc
C
C
1
36
37
144
109
108
73
72
1A_ME_V3
A2
A
A1
L1
L
c
b
A1
Table 90. LQFP144 20 x 20 mm, 144-pin low-profile quad flat package mechanical data
Symbol
millimeters inches
(1)
Min Typ Max Min Typ Max
A - - 1.600 - - 0.0630
A1 0.050 - 0.150 0.0020 - 0.0059
A2 1.350 1.400 1.450 0.0531 0.0551 0.0571
b 0.170 0.220 0.270 0.0067 0.0087 0.0106
c 0.090 - 0.200 0.0035 - 0.0079
D 21.800 22.000 22.200 0.8583 0.8661 0.874
D1 19.800 20.000 20.200 0.7795 0.7874 0.7953
D3 - 17.500 - - 0.689 -
E 21.800 22.000 22.200 0.8583 0.8661 0.8740