产品名称:

WTC801SPI

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  • 产品概述
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  • 参考方案

Operating voltage: 2.4V

Output voltage range: GND

Sensing thickness (insulating medium): 0-10mm,Maximum 10 mm

Response time of effective touch: Less than 150ms

Operating temperature: -40°C—+85°C

Storage temperature: -50°C—+125°C

State current: 18uA (3V power supply)

Dynamic current: 1.2 mA (3V power supply)

Wake-up mode: touch sensitive key to awaken


The touch sensitive control of electrical equipment, physical quantity regulation, such as the acoustic volume,and the brightness of luminaires, lighting color, power temperature control of household appliances etc..


WTC801SPI Touch sensitive eight keys + roller chip

Specification (V1. 1)

WTC801SPI is a Touch sensitive IC designed for touch-button of replacing mechanical type and mechanical knob. It can achieve waterproof, dustproof, seal isolation, with solid and artistic operation interface. A WTC801SPI can implement 8 keys and 1 roller (Slide bar).


Definitions of WTC801SPI Pins:

 

引脚图17.jpg

 Figure 1:Pin Diagram of WTC801SPI

 Definitions of WTC801SPI Pins:

Pin No.

Pin Name

Usage

Function Description

1

SW6

|

Capacitive sensor (key sense element) interface 6

2

SW7

|

Capacitive sensor (key sense element) interface 7

3

SW8

|

Capacitive sensor (key sense element) interface 8

4

SW9

|

Capacitive sensor (key sense element) interface 9

5

SW10

|

Capacitive sensor (key sense element) interface 10

6

SW11

|

Capacitive sensor (key sense element) interface 11

7

SW12

|

Capacitive sensor (key sense element) interface 12

8

SW13

|

Capacitive sensor (key sense element) interface 13

9

SW14

|

Capacitive sensor (key sense element) interface 14

10

SW15

|

Capacitive sensor (key sense element) interface 15

11

CSEL

|

Sensitivity adjustable capacitor interface

12

GND

|

Power ground

13

S0

O

The internal test leg Usually needs to suspend the S0

14

S1

O

The internal test leg Usually needs to suspend the S1

15

SDI

|

Data input line of the chip SPI interface is input the sensitivity adjustment data

16

SDO

|

The data output line of the chip SPI interface is output the key and slider data

17

SCK

|

The clock input line of the Chip SPI interface

18

SCS

|

The chip selection enabled line of Chip SPI interface

19

/RST  

|

Chip reset pin

20

VCC

|

positive power supply output

21

OUT

FLAG

O

Key status indicator has the output low level signal when pressing the key or slide bar, and the output high level signal when the finger leaves the key or slide bar. The initial of the electrifying is the high level output

22

TS

O

The internal test leg needs to suspend the TS

23

SW0

|

Capacitive sensor (key sense element) interface 0

24

SW1

|

Capacitive sensor (key sense element) interface 1

25

SW2

|

Capacitive sensor (key sense element) interface 2

26

SW3

|

Capacitive sensor (key sense element) interface 3

27

SW4

|

Capacitive sensor (key sense element) interface 4

28

SW5

|

Capacitive sensor (key sense element) interface 5

 

Chip Application Schematic Diagram:

WTC801SPI 

 Output Display:

 

The SPI time sequence diagram is shown in figure 4

 

 

输出信息17.jpg

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