Cypress Semiconductor CY3280-MBR3 データシート

Document Number: 001-85330 Rev. *G 

Page 6 of 37

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

CS2/GUARD

–

CapSense button / guard sensor, 

controls GPO2

Ground/Ground

CS2

4

CS3

–

CapSense button, controls GPO3

Ground

CS3

5

CMOD

–

External modulator capacitor. Connect 

2.2 nF/5 V/X7R or NPO capacitor

NA

CMOD

6

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

7

VDD

Power Power

NA

VDD

8

VSS

Power Ground

NA

VSS

9

CS15/SH/HI

I/DO

CapSense button / shield electrode/ 

Host Interrupt (SPO1 in the 

) 

Ground/Leave 

open/Leave open

HI

10

CS14/GPO6

I/DO

CapSense button / general purpose 

output (GPO)

Ground/Leave open

GPO6

11

CS13/GPO5

I/DO

CapSense button / GPO

Ground/Leave open

GPO5

12

CS12/GPO4

I/DO

CapSense button / GPO

Ground/Leave open

GPO4

13

CS11/GPO3

I/DO

CapSense button / GPO

Ground/Leave open

GPO3

14

CS10/GPO2

I/DO

CapSense button / GPO

Ground/Leave open

GPO2

15

CS9/GPO1

I/DO

CapSense button / GPO

Ground/Leave open

GPO1

16

CS8/GPO0

I/DO

CapSense button / GPO

Ground/Leave open

GPO0

17

CS7

–

CapSense button, controls GPO7

Ground

CS7

18

CS6

–

CapSense button, controls GPO6

Leave open

CS6

19

CS5

–

CapSense button, controls GPO5

Ground

CS5

20

CS4

–

CapSense button, controls GPO4

Ground

CS4

21

I2C SDA

DIO

I2C data

Leave open

I2C SDA

22

I2C SCL

DIO

I2C clock

Leave open

I2C SCL

23

HI/BUZ/

GPO7

DO

Host Interrupt/buzzer output/ GPO

(SPO0 in the 

)

Leave open/ leave 

open/ leave open

GPO7

24

XRES

XRES Active Low external reset (an active low 

pulse on this pin resets the CapSense 

Controller)

Leave open

XRES

25

Center Pad

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, DO = Digital Output, CS = CapSense Button, PS = Proximity Sensor

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

1. 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.

CS0/PS0

CS3

CMOD

VCC

1
2

3
4
5
6

18
17
16
15
14
13

CS7
CS8/GPO0

24

23

22

21

20

19

HI

/B

U

Z

/G

P

O

7

I2C

 S

C

L

I2C

 S

D

A

CS4

CS6

7

8

9

10

11

12

VD

D

4/GPO6

3/GPO5

CS2/GUARD

VSS

CS11/GPO3

2/GPO4

CS10/GPO2

CS9/GPO1

CS5

XRES

5/S

H

/HI

CS1/PS1