User`s manual

46 RabbitCore RCM2300
A.5 Conformal Coating
The area around the crystal oscillator has had the Dow Corning silicone-based 1-2620
conformal coating applied. The conformally coated area is shown in Figure A-5. The con-
formal coating protects these high-impedance circuits from the effects of moisture and
contaminants over time.
Figure A-5. RCM2300 Areas Receiving Conformal Coating
Any components in the conformally coated area may be replaced using standard soldering
procedures for surface-mounted components. A new conformal coating should then be
applied to offer continuing protection against the effects of moisture and contaminants.
NOTE: For more information on conformal coatings, refer to Rabbit Semiconductor
Technical Note 303, Conformal Coatings.
PE3
GND
PD6
PD2
PD1
PD0
PD7
J1
Y1
VCC
VBAT
+
GND
R22
R21
C14
C13
D2
D3
C3
R38
R41
R39
RT1
D1
R7
R8
U6
R37
Y3
R18
C24
U2
R29
C23
C9
R17
R19
G
R34
WD
J3
VCC
VCC
PE6
BEN
C4
R36
C27
R1
C8
R2
C10
JP2
JP1
R23
R13
C11
U1
R15
C12
C15
R26
Q2
Q3
Q4
Q5
R20
J2
Conformally coated area