Datasheet
CY8CMBR3002, CY8CMBR3102
CY8CMBR3106S, CY8CMBR3108
CY8CMBR3110, CY8CMBR3116 Datasheet
Document Number: 001-85330 Rev. *G Page 18 of 37
Figure 13. Example Schematics Demonstrating Multiple Sensor Types
In Figure 13
[7, 9]
, the CY8CMBR3106S device is configured in
the following manner:
■ PS0: CapSense proximity sensor
■ CS1–CS4: CapSense buttons
[8]
■ CMOD pin: 2.2 nF to ground
■ VCC pin: 0.1 uF to ground
■ VDD pin: To external supply voltage
❐ 1-µF and 0.1-µF decoupling capacitors connected to VDD
■ SLD10-SLD14: CapSense linear slider segments
■ SLD20-SLD24: CapSense radial slider segments
■ BUZ: To buzzer
❐ AC buzzer (1-pin).
❐ Buzzer second pin to ground.
■ I2C_SCL and I2C_SDA pins: 330 ohm to the I
2
C header. It is
assumed that the I
2
C line pull-up resistors are present on the
host side outside the I
2
C header.
❐ For I2C communication.
■ HI pin: To host
❐ To prompt the host to initiate an I
2
C transaction for reading
the changed sensor status.
■ XRES pin: Floating
❐ For external reset.
PSO
SLD10
SLD11
SLD12
SLD13
SLD14
I2C_SCL
I2C_SDA
CMOD
VCC
SLD10
SLD11
SLD12
SLD13
SLD14
SLD22
SLD21
SLD20
SLD24
SLD23
HI (TO HOST)
XRES
SLD20
SLD24
I2C_SCL
I2C_SDA
SLD21
SLD22
SLD23
VDD
VDD
VDD
VDD
R18100E
R10560E
C4
0.1uF
R6560E
CS2
CS3
R8560E
R15 560E
R16 560E
R2 330E
R11 560E
CS1
R9 560E
R13 560E
CSS1
CapSense Linear Slider 5 Seg
R3560E
R17 560E
CapSense Radial slider 5-Seg
R12 560E
R7 560E
BUZZER
U1
CY8CMBR3106S(24-QFN)
CS0/PS0
1
CS1/PS1
2
CS2
3
CS3
4
CMOD
5
VCC
6
VDD
7
VSS
8
SLD10
9
SLD11
10
SLD12
11
SLD13
12
SLD14
13
CS10/SLD20
14
CS9/SLD21
15
CS8/SLD22
16
CS7/SLD23
17
CS6/SLD24
18
CS5/SH/BUZ
19
CS4
20
I2C_SDA
21
I2C_SCL
22
HI/BUZ
23
XRES
24
R4560E R5 560E
CS4
J1
I2C HEADER
1
2
3
4
5
C2
2.2nF
C3
0.1uF
C1
1uF
R14 560E
R1 330E
Notes
7. VCC should be shorted to VDD for 1.71 V ≤ VDD ≤ 1.89 V.
8. All CapSense pins have 560-ohm series resistance (placed close to the chip) for improved noise immunity.
9. Proper ground layout is important for better SNR performance. Refer to the CY8CMBR3xxx CapSense Design Guide and Getting started with CapSense guide for
all layout guidelines.