CY8C20140-SX21 - CapSense Express Touch Controller | Cypress
부품 번호: CY8C20140-SX21 ✗ 단종CY8C20140-SX21 개요
A capacitive touch controller is a specialized semiconductor that detects changes in capacitance caused by a user's finger or conductive object. The CY8C20140-SX21 belongs to the CapSense Express family, a configurable touch-control and GPIO platform within the broader microcontroller and human-interface IC category. Compared with mechanical switches, capacitive sensing supports sealed panels, flexible control surfaces, LED feedback, and programmable button behavior without exposing moving contacts to dust, moisture, or wear.
The verified data identifies support for four to ten capacitive sensing buttons, one configurable 10-segment capacitive slider, and additional I/O resources for LEDs or interrupt outputs. Configuration is performed through an I2C interface, and operating parameters can be stored in onboard nonvolatile memory so that the controller can load its configuration automatically at power-on. This combination supports both development flexibility and production designs requiring deterministic startup behavior.
The CY8C20140-SX21 is particularly useful when a product needs a small number of touch inputs without using a general-purpose MCU. A slider can provide directional or level control, while remaining channels can serve as buttons or GPIOs. The verified sources identify the controller as a CapSense Express-10 device and describe configurable I/O behavior, but they do not provide a complete electrical limit table, recommended capacitor values, temperature range, or detailed timing characteristics.
Typical applications include appliance control panels, consumer-electronics keypads, compact industrial interfaces, and embedded products that combine capacitive buttons with LED indication. The controller can be placed beside a PCB-mounted or panel-mounted sensor electrode and connected to a host controller through I2C. Designers should verify the complete datasheet electrical characteristics, electrode configuration, power sequencing, and firmware configuration method before finalizing a new PCB.
This page distinguishes verified product facts from unavailable detailed parameters, links the original manufacturer and distributor references, and provides application guidance, comparison parameters, and replacement considerations for engineers evaluating the CY8C20140-SX21. Detailed values not present in the supplied sources are explicitly marked as unavailable rather than inferred.
드롭인 대체품: CY8C20140-SX21 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: CY8C20140-SX21 (동일 폼 팩터 및 풋프린트) — 차이점: Configuration Storage, Product Type.
CY8C20140-SX2I
✅ 드롭인가격 문의
데이터시트 보기 →CY8C20140-SX21
✅ 드롭인 ⚠️ 사양 미검증가격 문의
데이터시트 보기 →CY8C20110-SX21
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
CY8C20120-SX21
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
CY8C20130-SX21
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
CY8C20160-SX2I
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
CY8C20140-SX21 최대 정격 & 전기적 특성
| Product Type | CapSense Express-10 configurable I/O controller |
| Maximum Capacitive Sensing Buttons | 10 buttons |
| Capacitive Slider Configuration | 1 slider with 10 segments |
| Configurable I/O Channels | 10 channels |
| Configuration Interface | I2C |
| Configuration Storage | Onboard nonvolatile memory |
| Power-On Behavior | Automatic configuration loading |
| Additional I/O Functions | Buttons, GPIOs, LED driving, and interrupt signals |
| 패키지 | 16-SOIC |
| 실장 유형 | Surface Mount |
| Manufacturer | Cypress Semiconductor |
| Current Distributor Branding | Infineon |
CY8C20140-SX21 16-soic 핀 구성 가이드
CY8C20140-SX21(16-soic 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: CY8C20140-SX21.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
CY8C20140-SX21 적합 용도: 6 애플리케이션s: Appliance Control Panel, Consumer Electronics Keypad, LED Feedback Touch Interface, Capacitive Slider Control, Industrial HMI Module, Medical Device Touch Panel.
Appliance Control Panel
The CY8C20140-SX21 fits appliance panels that combine capacitive buttons with LED status indication. Its verified feature set supports up to 10 capacitive buttons or one 10-segment slider, while remaining configurable channels can operate as GPIOs for LEDs or interrupt signals. The controller can be mounted near the touch electrodes, reducing wiring compared with a network of mechanical switches. The I2C interface allows a host processor to configure sensing behavior and interpret events, while stored nonvolatile settings support automatic loading after power-on. Designers must still validate panel thickness, electrode spacing, humidity effects, grounding, and the controller's detailed electrical limits before production release.
추천
Consumer Electronics Keypad
The CY8C20140-SX21 is suitable for compact consumer keypads where sealed capacitive controls provide a cleaner interface than mechanical switches. Up to 10 capacitive inputs can be assigned to buttons, and one 10-segment slider can support volume, brightness, or menu navigation. I2C configuration gives the product processor a simple control path, while onboard nonvolatile memory allows the interface definition to load automatically at startup. Because the verified excerpts do not provide sensitivity limits, acquisition timing, or recommended sensor-component values, a production implementation should calibrate against the actual enclosure, electrode artwork, and surface materials while checking the full manufacturer datasheet.
추천
LED Feedback Touch Interface
The CY8C20140-SX21 can combine capacitive input and LED feedback because its configurable channels are documented for use as GPIOs that drive LEDs or generate interrupt signals. This allows touch feedback to be implemented close to the user interface without dedicating a separate GPIO-expansion device to every control. A host controller can configure the device through I2C and connect the touch events to the product state machine. The direct-drive current, LED duty-cycle limits, and logic thresholds are not included in the verified excerpts, so engineers should verify them in the datasheet and account for both LED and capacitive-sensing loading on the power rail.
추천
Capacitive Slider Control
The CY8C20140-SX21 is appropriate for a one-axis, 10-segment slider used for level or directional input. The verified CY8C20140 family description specifically identifies support for one capacitive slider with 10 segments and configurable buttons or GPIOs for the remaining functions. A 10-segment interface can provide coarse position feedback while reducing the number of separate electrodes compared with a long linear array. Design validation should include finger-size coverage, electrode geometry, sensor spacing, slider resolution, and environmental drift. The supplied data does not state the controller's acquisition time or resolution, so those values must be obtained from the complete manufacturer documentation.
추천
Industrial HMI Module
The CY8C20140-SX21 can serve as the touch-input front end in a compact industrial human-machine interface. Its configurable sensing resources can implement buttons or a slider, while I2C allows a supervisory controller to read states and update configuration. Nonvolatile configuration storage supports repeatable power-on behavior in equipment that must recover its interface state without a lengthy host setup sequence. Because industrial panels may use thick insulating materials, gloves, moisture, or conductive contamination, engineers should characterize the complete sensor structure rather than relying only on nominal laboratory touch performance. Datasheet electrical limits and environmental qualifications must also be confirmed for the final enclosure.
추천
Medical Device Touch Panel
The CY8C20140-SX21 can support sealed touch controls in a medical-device enclosure where a mechanical switch interface is undesirable. Its verified support for capacitive buttons, a 10-segment slider, LED-driving GPIOs, and interrupt outputs is useful for a clean front panel with limited physical controls. The host processor can use I2C for configuration and event handling, while nonvolatile storage supports predictable startup behavior. Medical use requires broader validation than the supplied excerpts provide, including electrical isolation strategy, leakage limits, ESD performance, sterilization compatibility, and usability verification; no medical-specific qualification is stated in the verified data.
추천
추천 제품 요약
엔지니어링 참조 데이터: CY8C20140-SX21 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | CY8C20140-SX2I | CY8C20140-SX21 | CY8C20110-SX21 | CY8C20120-SX21 | CY8C20130-SX21 | CY8C20160-SX2I |
|---|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Product Category | CapSense Express-10 configurable I/O controller | CapSense Express controller | CapSense Express-10 configurable I/O controller | CapSense Express controller | CapSense Express controller | CapSense Express controller | CapSense Express controller |
주요 차별점
- Dedicated 10-segment slider support (vs CY8C20160-SX2I)
- Direct configuration persistence (vs CY8C20110-SX21)
- Unified touch, LED, and interrupt resources (vs CY8C20120-SX21)
- Closest exact-family ordering candidate (vs CY8C20140-SX2I)
설계 노트
Keep the CY8C20140-SX21 and its sensor-network components close to the touch electrodes, and route each electrode with a short, guarded trace. The verified excerpts do not provide recommended trace lengths or external component values, so use the complete datasheet as the controlling reference. Validate the final electrode geometry with the actual enclosure material and thickness; changing from a bare PCB to a plastic overlay can alter sensitivity, coupling, and the required compensation network.
Do not treat every CY8C201x0 family member as automatically interchangeable. The verified search results establish the target's configurable slider, GPIO, I2C, and nonvolatile-storage features, but they do not establish identical pin assignments for CY8C20110, CY8C20120, CY8C20130, or CY8C20160. Before approving a substitute, compare the 16-SOIC pin map, supply range, touch-channel allocation, slider architecture, I2C command set, memory behavior, and acquisition timing.
Power the controller and attached host from a rail that satisfies the datasheet's detailed operating and absolute-maximum limits. Those limits were not present in the supplied excerpts and are therefore not guessed here. Provide local decoupling according to the manufacturer guidance, keep switching-regulator and display-related noise away from sensitive electrode routing, and evaluate the rail during touch scanning. This is particularly important when the interface also drives LEDs or supports an industrial panel with longer external wiring.
Treat the I2C host connection as a potentially noise-sensitive control path even though the CY8C20140-SX21 itself is the sensing device. Use the voltage levels, pull-up arrangement, capacitance, and timing limits specified in the complete datasheet. Keep the bus away from antenna and switching-node copper where practical, and verify signal integrity when the controller is separated from the host by a long cable or placed on a different PCB section.
규정 준수 정보
The supplied verified excerpts do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The original manufacturer is Cypress Semiconductor; distributor listings currently display the part under Infineon.