Datasheet

ManualsBrandsCYPRESS SEMICONDUCTOR ManualsDev KitsPCB design board

CY8CMBR3002, CY8CMBR3102

CY8CMBR3106S, CY8CMBR3108

CY8CMBR3110, CY8CMBR3116 Datasheet

Document Number: 001-85330 Rev. *G Page 8 of 37

CY8CMBR3108 (8 Sensing Inputs)

Note

3. The center pad on the QFN package should be connected to ground (VSS) for best mechanical, thermal, and electrical performance. If it is not connected to ground,

it should be left floating without being connected to any other signal.

Table 3. Pin Diagram and Definitions - CY8CMBR3108

16-QFN

Pin Diagram

Pin # Pin Name Type Description If unused

Default

Configuration

1 CS0/PS0 – CapSense button / proximity

sensor, controls GPO0

Ground/Ground CS0

2 CS1/PS1 – CapSense button / proximity

sensor, controls GPO1

Ground/Ground CS1

3 CMOD – External modulator capacitor.

Connect 2.2 nF/5 V/X7R or

NPO capacitor

NA CMOD

4 VCC Power Internal regulator output.

Connect a 0.1-µF decoupling

capacitor if VDD > 1.8 V. If VDD

is 1.71 V to 1.89 V, short this pin

to VDD

NA VCC

5 VDDIO Power Power for I2C and HI lines Connect to VDD VDDIO

6 VDD Power Power NA VDD

7 VSS Power Ground NA VSS

8 CS4/GPO0 I/DO CapSense button / GPO Ground/Leave open GPO0

9 CS5/GPO1 – CapSense button / GPO Ground/Leave open GPO1

10 CS6/GPO2 I/DO CapSense button / GPO Ground/Leave open GPO2

11 CS7/GPO3/

I/DO CapSense button / GPO/ shield

electrode.

(SPO1 in the register map)

Ground/Leave open GPO3

12 CS2/GUARD – CapSense button, controls

GPO2 / guard sensor

Leave open/Leave open CS2

13 CS3 – CapSense button, controls

GPO3

Ground CS3

14 I2C SDA DIO I2C data Leave open I2C SDA

15 I2C SCL DIO I2C clock Leave open I2C SCL

16 HI/BUZ DO Host interrupt / buzzer output

Supply voltage for buzzer and

pull-up resistor on HI should be

equal to VDDIO

(SPO0 in the register map).

Leave open/leave open HI

17 Center Pad

[3]

E-pad Connect to VSS for best

mechanical, thermal and

electrical performance

Floating, not connected to

any other signal

E-pad

Legend: I = Analog Input, O = Analog Output, DIO = Digital Input/Output, CS = CapSense Button, PS = Proximity Sensor

SH = Shield Electrode, BUZ = Buzzer Output, GPO = General Purpose Output, GUARD = Guard Sensor, SPO = Special Purpose Output.

CS0/PS0

CMOD

VCC

VDDIO

I2C SCL

I2C SDA

CS3

CS2/GUARD

VDD

CS4/GPO0

CS5/GPO1

CS1/PS1

CS6/GPO2

CS7/GPO3/SH

HI/BUZ

VSS

QFN

(Top View)