RoyalTek RSA-1500L - Manual (Page 10)

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RSA-1500L User Manual
(4) Power:
Connect VCC pin to DC 3.3V. The power supply must add bypass
capacitor(10uF and 1uF).It can reduce the Noise from power supply and
increase power stability.
(5) GPIO:
The GPIOs function are for customer used.
If no use GPIO function, it don’t connect anything.
1.6 Mechanical Layout
Figure 1-5 Mechanical Layout