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1. Outline
The PCA7758 is a converter board from 36-pin 0.5-mm-pitch QFN (36PJW-A) to standard-pitch (2.54-mm). The pins
correspond one-to-one.
2. Connecting the Oscillator Circuit Pattern
Take notice that the processing depends on whether or not the IC1 (oscillator module) is used.
(1) When the IC1 (oscillator module) is used
Recommended oscillator module: SG-51P (Seiko Epson Corporation)
When using the IC1, the following processing is necessary (see (1) to (3) in Figure 1).
(1) Supply VCC and GND.
(2) Connect the OUT pin to the XIN pin.
(3) Install a bypass capacitor at the C1.
C1
IC2
Rf
XTAL1
Rd
Vcc GND
1
8
C2
C3a
C3b
8
1211
(1)
(2)
(3)
Figure 1 Connections when using the C1
SG-51P
IC2
1
78
14
IC1-11
C1
VCC
5
6
GND
IC1-8
IC1-13
Figure 2 Connection diagram when using the C1