str712 STMicroelectronics, str712 Datasheet - Page 70
str712
Manufacturer Part Number
str712
Description
144/64-pin Arm7tdmi Mcu With Up To 256kb Flash, 64kb Ram And Emi
Manufacturer
STMicroelectronics
Datasheet
1.STR712.pdf
(78 pages)
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Package characteristics
70/78
Figure 41. 144-Pin low profile quad flat package
Jedec Ref. MS-026-BFB
b
109
144
108
1
e
D1
D3
D
Recommended footprint (dimensions in mm)
73
36
72
37
E3
E1
L1
E
L
Seating Plane
h
0.08 mm
.003 in.
b
A1
c
A2
A
1.Values in inches are converted from mm and
rounded to 3 decimal digits.
Dim.
A1
A2
D1
D3
E1
E3
L1
A
D
E
K
N
b
c
e
L
21.80 22.00 22.20 0.858 0.867 0.874
19.80 20.00 20.20 0.780 0.787 0.795
21.80 22.00 22.20 0.858 0.867 0.874
19.80 20.00 20.20 0.780 0.787 0.795
0.05
1.35 1.40 1.45 0.053
0.17 0.22 0.27 0.007
0.09
0.45 0.60 0.75 0.018 0.024 0.030
Min
0°
17.50
17.50
0.50
1.00
mm
Typ
3.5°
Number of Pins
Max
1.60
0.15 0.002
0.20 0.004
7°
144
Min
0°
STR71xF
inches
0.689
0.689
0.020
0.039
Typ
3.5°
(1)
0.063
0.006
0.057
0.011
0.008
Max
7°