sensor chip. WTC6216BSI Datasheet

WTC6216BSI chip. Datasheet pdf. Equivalent


WINCOM WTC6216BSI
Professional Touch Sensor Chip Supplier
http://www.wincomtech.com
WTC6216BSI WTC6216BSI-L
WTC6216BSI Inductive touch key chip of sixteen-channel electric capacitance
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Model distinction
Standard substance: WTC6216BSI
Have low-consumption version of sleep mode:WTC6216BSI-L
Number of keys
4-16 keys
Technical principle
Capacitive to digital conversion technology
Key response mode
Dimension of key sense element
Spacing of key sense element
Shape of key sense element
Material of key sense element
Requirements for PCB
Panel material
Panel thickness
Single key mode, only one key can be operated at a time
Minimum 3mm ×3mm, maximum 30mm ×30mm, to be determined according to actual
demand and panel thickness
Minimum spacing 0.5mm, to be determined according to actual demand
Arbitrary polygon, rotundity or ellipse, either panel with hole in the middle or hollow panel
(optional)
PCB copper coil, sheet metal, flat-top cylinder spring, conductive rubber, conductive ink, ITO
layer of conductive glass, etc.
Single-sided PCB and double-sided PCB
Insulating materials, such as organic glass, ordinary glass, tempered glass, plastic, wood
timber, paper, ceramics and stone
0 – 20 mm
Adjustment method of key sensitivity Key sensitivity can be adjusted by changing value of base capacitance CSEL.
Effective touch response time
Water resistance
RFI resistance
Operating voltage range
Less than 100 ms
Watering or spraying water on the panel will not cause malfunction of keys; when flooded or
with water accumulation, no abnormal response occurs by touching the panel.
Effectively suppress RFI (radio frequency interference) caused when GSM cell phone is used
to make a call or answer a call next to the panel or a talk proceeds next to the panel over
high-power walkie-talkie.
WTC6216BSI: 3.3V-5.5V WTC6216BSI-L: 2.2V-5.5V
Operating temperature range
—40°C—+85°C
Data transmission interface
BCD interface (8421 code)
Storage temperature range
—50°C—+125C
Chip sealing mode
SSOP28(150MIL)
Typical application
Various home appliances, security equipment, communication equipment, industrial control
equipment & instruments, entertainment equipment, medical equipment, sport facilities,
toy,etc.
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Consulting telephone0755-2640691913392806258 Email:martin@wincomtech.com
http://www.wincomtech.com


WTC6216BSI Datasheet
Recommendation WTC6216BSI Datasheet
Part WTC6216BSI
Description 16-channel capacitive touch sensor chip
Feature WTC6216BSI; .
Manufacture WINCOM
Datasheet
Download WTC6216BSI Datasheet




WINCOM WTC6216BSI
Professional Touch Sensor Chip Supplier
http://www.wincomtech.com
WTC6216BSI WTC6216BSI-L
Table of Contents
1. Product Introduction..............................................................................................................................................................................3
1.1. Product Overview.......................................................................................................................................................................... 3
1.2. Technical Principle......................................................................................................................................................................... 3
1.3. High production efficiency............................................................................................................................................................. 3
1.4. Adapt to different thickness panels...............................................................................................................................................3
1.5. Chip Package Type......................................................................................................................................................................... 3
2. Technical Features and Parameters......................................................................................................................................................... 3
2.1. Technical Features..........................................................................................................................................................................3
2.1.1. Simple Peripheral Circuits, and A Few Peripheral Components..........................................................................................3
2.1.2. Debugging-free Production and Excellent Long-time Working Stability.............................................................................4
2.1.3. The user can use the compact keyboard of smaller spacing...............................................................................................4
2.1.4. Excellent Water Resistance..................................................................................................................................................4
2.1.5. Excellent Electromagnetic Immunity...................................................................................................................................4
2.1.6. Unique Line Length Self-correction Function...................................................................................................................... 4
2.1.7. Compliance with Industrial Application Specifications & Requirements............................................................................ 5
2.2 Technical Parameters...................................................................................................................................................................... 5
3. Typical Application................................................................................................................................................................................... 5
4. Definitions of WTC6216BSI Pins...............................................................................................................................................................5
4.1.WTC6216BSI Pin Diagram............................................................................................................................................................... 5
4.2 Definitions of Pins........................................................................................................................................................................... 5
5. Output Display......................................................................................................................................................................................... 6
5.1. Sequence diagram of BCD interface output.................................................................................................................................. 6
5.2. The real list of BCD output.............................................................................................................................................................7
6. Peripheral Circuit and Precautions...........................................................................................................................................................8
6.1. Peripheral Circuit........................................................................................................................................................................... 8
6.2. Peripheral Circuit........................................................................................................................................................................... 8
7. Sensitivity Setting.....................................................................................................................................................................................9
7.1. Selection of Suitable Capacitor CSEL............................................................................................................................................. 9
7.2. Area of sense element................................................................................................................................................................... 9
7.3. The software fine adjustment of sensitivity.................................................................................................................................. 9
7.4. The method of sensitivity set by software.................................................................................................................................... 9
7.5. Factory setting sensitivity initial value of WTC6216BSI...............................................................................................................10
8. WTC6216BSI Power Supply....................................................................................................................................................................10
8.1 DC Voltage Stabilizer..................................................................................................................................................................... 10
8.2. Placement of Voltage Stabilizer Component............................................................................................................................... 11
8.3. Grounding.................................................................................................................................................................................... 11
8.4. Precautions for High Noise Condition..........................................................................................................................................11
8.5. Power Filter..................................................................................................................................................................................12
8.6. Use of +5V Power Supply of the Host..........................................................................................................................................12
9. Low-power version WTC6216BSI-L........................................................................................................................................................ 12
10. WTC6216BSI used capacitive sensors..................................................................................................................................................13
10.1.The material and shape of the capacitive sensors......................................................................................................................13
10.2. The area of the sense element.................................................................................................................................................. 13
10.3. Connection between Capacitive Sensor and Panel................................................................................................................... 13
10.4. The common elastic connection methods are:......................................................................................................................... 13
10.5. Requirements for sense element and Panel Contact Surface................................................................................................... 14
10.6. The connection between the induction disc and the input pin of the induction disc of IC...................................................... 14
11. Processing of Vacant Sensor Channel.................................................................................................................................................. 14
12. Package Dimension Drawing of WTC6216BSI...................................................................................................................................... 15
2
Consulting telephone0755-2640691913392806258 Email:martin@wincomtech.com
http://www.wincomtech.com



WINCOM WTC6216BSI
Professional Touch Sensor Chip Supplier
http://www.wincomtech.com
WTC6216BSI WTC6216BSI-L
WTC6216BSI Inductive touch key chip of sixteen-channe electric capacitance
Specification V1.5
1. Product Introduction
1.1. Product Overview
WTC6216BSI series touch sensing IC is an integrated circuit designed to achieve human touch interface.
It can replace the mechanical light touch key to realize waterproof and dustproof, seal isolation, with strong
and artistic operation interface. A WTC6216BSI can achieve 4 to 16 independent keys. The user can use it
flexibly according to the needs.
1.2. Technical Principle
WTC6216BSI uses the change of capacitance on the 16 bit high precision of CDC (digital capacitance
transducer) IC detection induction disk (capacitance sensor) to identify the touch action of the human finger.
The data of CDC output is processing by the embedded RISC CPU with efficient and reliable algorithms.
Outward output BCD encoding to indicate the key action.
1.3. High production efficiency.
It is only needed to adjust one capacitor Csel that can change the sensitivity of all channels, with less
peripheral component, and high production efficiency.
1.4. Adapt to different thickness panels
Through selecting the appropriate Csel capacitance value, appropriately adjusting the sensing area can
make WTC6216BSI to adapt the insulation panel of the different thickness of 0-20mm.
1.5. Chip Package Type
WTC6216BSI is packaged with standard 28PIN SSOP28A(150mil).
2. Technical Features and Parameters
2.1. Technical Features
2.1.1. Simple Peripheral Circuits, and A Few Peripheral Components
3
Consulting telephone0755-2640691913392806258 Email:martin@wincomtech.com
http://www.wincomtech.com







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