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RX Family
2.2.1 Two-Layer Board
• Use the GND wiring pattern to form a guard for the portion of the back side between the VCL pin and the
capacitor.
• Make connections to GND via at least four through holes.
• Make the GND wiring traces as wide as possible.
Figure 2.6 shows an example VCL pin wiring pattern on a two-layer board.
Four or more
through holes
b
C
Capacitor
Through hole
Figure 2.6 Example VCL Pin Wiring Pattern on Two-Layer Board
R01AN1411EJ0110 Rev.1.10
Oct.26.21
C
a
Layer under
VCL is GND.
VCL
VBAT
a
and
possible)
When
VSS
ensure parasitic resistance
for
a
Front side
wiring pattern
Hardware Design Guide
≤ 8 mm (4 mm if
b
a
and
b
> 8 mm,
is less than 1 Ω.
and
b
Back side
wiring pattern
Page 11 of 32
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