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CY8CKIT-062S2-43012 PSoC 62S2 Wi-Fi BT Pioneer Kit Guide, Doc. # 002-28109 Rev. *E
39
Hardware
3.2.5.2
Voltage Selection
VCC_VBAT has a dedicated regulator that changes voltage by varying the feedback voltage through
the resistor network at
J9
.
VTARG and VCC_VDDIO2_IN have dedicated 3-pin voltage selection headers
J14
and
J16
respectively that select between VCC_3V3 or VCC_1V8 voltages.
Figure 3-7
shows the schematics
of the power selection circuits.
Note:
In this kit, CYW43012 only works with VCC_VDDIO2_IN at VCC_1V8 configuration and
hence by default,
R84
is loaded and
J16
is not loaded.
Figure 3-7. Voltage Selection Headers
VCC_VDDIO0 voltage can be selected between VCC_3V3 and VCC_1V8 using zero-ohm resistors.
It is connected to VCC_3V3 by default as microSD card (powered by VCC_VDDIO0) works only at
3.3V.
Figure 3-8
shows the schematics of the voltage selection circuits.
Figure 3-8. Voltage Selection
R82
0 OHM
No Load
R83
0 OHM
No Load
VCC_3V3
VCC_1V8
VTARG
VTARG Voltage Selection Header
3.3V
1.8V
J14
1
2
3
R84
0 OHM
R85
0 OHM
No Load
1.8V
3.3V
J16
No Load
1
2
3
VCC_3V3
VCC_1V8
VCC_VDDIO2_IN
VCC_VDDIO2_IN
Voltage Selection Header
R171
0 OHM
No Load
R172
0 OHM
No Load
C74
47pF
50V
R72
100K
1%
R73
27.4K
1%
J9
1
2
3
3.6V 1A
VCC_VBAT
R69
40.2K
1%
R44
0 OHM
VCC_1V8
R45
0 OHM
No Load
VCC_VDDIO0
VCC_3V3
VDDIO0 Voltage Selection
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