产品名称：

WTC64K1R

Back to list

产品参数
应用秘籍
产品概述
工作电路
参考方案

Operating voltage: 3.3V

Output voltage range: GND

Sensing thickness (insulating medium): 0-10mm

Response time of effective touch: Less than 200ms

Operating temperature: -40°C—+85°C

Storage temperature: -50°C—+125°C

Be applicable to various kitchen apparatuses, audio and video devices, air conditioners, sanitary electrical apparatuses, lights and switches, security equipment, instruments, portable player, mobile phones, electronic toys and learning machines.

WTC64K1R Capacitive sensitive touch switch & roller encoder chip

WTC64K1R series touch sensing IC is an integrated circuit designed to achieve human touch interface. It can replace mechanical light touch and mechanical rotary encoder, to realize waterproof and dustproof, seal isolation, solid and beautiful operation interface. A WTC64K1R can achieve 2 ~ 4 independent touch keys and a touch roller encoder. It can provide user with a low-cost human-computer interaction interface. The operation and signal output of the touch roller coder is the same as the mechanical wheel coder. But there are no burrs for the output pulse of the mechanical code. The user does not have to handle the soft and hardware aiming at the burr, and only needs to adjust one capacitor Csel that can change the sensitivity of all channels, with high production efficiency. Through selecting the appropriate Csel capacitance value and properly adjusting the sensing disk area, it can make WTC64K1R to adapt the Insulation panels of different thickness of 0 — 10mm.

Definitions of WTC64K1R Pins：

Definitions of WTC62K1R Pins：

Pin No.	Pin Name	Usage	Function Description
1	SW8	\|	Roller induction disc unit interface
2	SW9	\|	Roller induction disc unit interface
3	SW10	\|	Roller induction disc unit interface
4	SW11	\|	Roller induction disc unit interface
5	SW12	\|	Roller induction disc unit interface
6	SW13	\|	Roller induction disc unit interface
7	SW14	\|	Roller induction disc unit interface
8	SW15	\|	Roller induction disc unit interface
9	CSEL	\|	Sensitivity adjustable capacitor interface
10	GND	\|	Power ground
11	CODER1	O	Roller encoder pulse output 1
12	CODER0	O	Roller encoder pulse output 0
13	OUT0	O	Touch key SW0 status output
14	OUT1	O	Touch key SW1 status output
15	OUT2	\|	Touch key SW2 status output
16	OUT3	\|/O	Touch key SW3 status output
17	/RST	\|	Chip reset pin
18	VCC	\|	positive power supply output
19	BLC	O	Backlight LED control pin
20	BUZZ	O	Buzzer control pin
21	SW0	\|	Touch key (induction disc) interface 0
22	SW1	\|	Touch key (induction disc) interface 1
23	SW2	\|	Touch key (induction disc) interface 2
24	SW3	\|	Touch key (induction disc) interface 3

Peripheral Circuit：

RP1 and RP2 are the match resistance group. Please try to place them close to the IC WTC64K1R

Figure 4: WTC64K1R Application Schematic Diagram

Output Display

The output of the touch key：

When the occurrence of effective touch on the sense element is detected, WTC64K1R will output the status of corresponding sense element channel within 100ms, so that it can be processed by user MCU, or directly drive the execution circuit to work

The relationship between the output signal and the touch key input channel is shown below The signal output does not have the output jitter of the mechanical key. The user does not need to make

mechanical key to jitter.

WTC64K1R Figure 2: Sequence diagram of the output of the key

Touch rotary encoder output：

The operation mode and output signal of the touch roller are consistent with the common mechanical roller encoder. But there is no the burr of mechanical outputpulse. The user does not have to handle the soft and hardware aiming at the burr

WTC64K1R Figure 3: Sequence diagram of touch roller output

The rotation of roller gives 18 pulses a week.

The phase difference between the two pulses is around 6ms.

WTC64K1R

QQ设置

SKYPE 设置

阿里旺旺设置

电话号码管理

二维码管理