C8051F850-B-GM Datasheet, PDF (41/290 Pages) Silicon Laboratories – Low-Cost 8-bit MCU Family with up to 8 kB of Flash

6. QFN-20 Package Specifications
C8051F85x/86x
Figure 6.1. QFN-20 Package Drawing
Table 6.1. QFN-20 Package Dimensions
Symbol
Millimeters
Symbol
Min
Nom
Max
Min
A
0.70
0.75
0.80
A1
0.00
0.02
0.05
b
0.20
0.25
0.30
c
0.27
0.32
0.37
D
3.00 BSC
D2
1.6
1.70
1.8
e
0.50 BSC
E
3.00 BSC
E2
1.6
1.70
1.8
f
L
0.3
L1
0.00
aaa
—
bbb
—
ccc
—
ddd
—
eee
—
Notes:
1. All dimensions are shown in millimeters unless otherwise noted.
2. Dimensioning and tolerancing per ANSI Y14.5M-1994.
Millimeters
Nom
2.53 BSC
0.40
—
—
—
—
—
—
Max
0.5
0.10
0.05
0.05
0.08
0.10
0.10
Preliminary Rev 0.6
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