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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.
Figure 1 Connections when using the C1
Figure 2 Connection diagram when using the C1
8
(3)
XTAL1
IC2
1
VCC
IC2
1
14
5
6
C1
7
8
SG-51P
GND
(2/4)
(2)
11
12
8
Rf
Rd
(1)
C3b
C3a
C2
Vcc
GND
IC1-8
IC1-11
IC1-13
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