str712 STMicroelectronics, str712 Datasheet - Page 71

• Manufacturer Part Number: str712
• Description: 144/64-pin Arm7tdmi Mcu With Up To 256kb Flash, 64kb Ram And Emi
• Manufacturer: STMicroelectronics

STR71xF
Figure 42. 64-Low profile fine pitch ball grid array package
Figure 43. 144-low profile fine pitch ball grid array package
Figure 44. Recommended PCB design rules (0.80/0.75mm pitch BGA)
Dpad
Dsm
Dpad
Dsm
Solder paste
– Non solder mask defined pads are recommended
– 4 to 6 mils screen print
0.37 mm
0.52 mm typ. (depends on solder
mask registration tolerance
0.37 mm aperture diameter
Dim.
ddd
Dim.
A1
A2
D1
E1
ddd
eee
A
b
D
E
N
e
A1
A2
D1
E1
f
fff
A
D
E
N
b
e
F
1
Values in inches are converted from mm and
Package characteristics
1.210
0.270
0.450 0.500 0.550 0.018 0.020 0.022
7.750 8.000 8.150 0.305 0.315 0.321
7.750 8.000 8.150 0.305 0.315 0.321
0.720 0.800 0.880 0.028 0.031 0.035
1.050 1.200 1.350 0.041 0.047 0.053
Min
1.21
0.21
0.35 0.40 0.45 0.0138 0.0157 0.01
9.85 10.00 10.15 0.3878 0.3937 0.39
9.85 10.00 10.15 0.3878 0.3937 0.39
Min
rounded to 4 decimal digits.
1.120
5.600
5.600
mm
Typ
1.085
8.80
8.80
0.80
0.60
mm
Typ
Number of Pins
1.700 0.048
0.120
Max
Number of Pins
Max
1.70 0.0476
0.10
0.15
0.08
64
0.011
Min
0.0083
144
Min
inches
0.044
0.220
0.220
Typ
inches
0.0427
0.3465
0.3465
0.0315
0.0236
Typ
0.067
0.005
71/78
Max
1)
0.06
0.00
0.00
0.00
Ma