User Manual Part 2

CY8CKIT-042-BLE Bluetooth® Low Energy (BLE) Pioneer Kit Guide, Doc. # 001-93731 Rev. *A 110
Hardware
5.2.5 BLE Passives
Module boards include a 24-MHz crystal and a 32-kHz crystal, the CMOD and shield (CTANK) circuit
for CapSense, a SAR bypass capacitor, and adequate decoupling capacitors for all the power
domains, as shown in Figure 5-24.
Figure 5-24. Schematics and Board Highlight of External Crystal, CMOD, CTANK, Decaps, Jumpers
SAR bypass
CMOD
Shunt
Resistor
C_Tank
No Load
No Load
P4.0 P4.1
VDDD
VDDA
VDDR
VREF
VCCD VDDD
0603
C20
1.0 uF
0402
C9
0.1 uF
0603
C10
1.0 uF
0603
C2
1.0 uF
0402
C1
0.1 uF
C22
10000 pF
0603
C6
1.0 uF
0603
C17
1.0 uF
0603
C4
1.0 uF
0402
C5
0.1 uF
0402
C16
0.1 uF
0402
C3
0.1 uF
0603
C8
1.0 uF
C21
2200 pF
0603
C19
1.0 uF
0603
C15
1.0 uF
0402
C18
0.1 uF
0805
R1
Zero Ohm
0805
R2
Zero Ohm
0603
C12
1.0 uF
0402
C11
0.1 uF
0402
C7
0.1 uF