CY8C20110-SX2I - 10-Input CapSense Controller | Infineon
料号： CY8C20110-SX2I ✓ 量产中CY8C20110-SX2I 概述
A capacitive touch controller is a specialized input interface IC that detects changes in capacitance caused by a user's finger or conductive object. It belongs to the broader capacitive-sensing controller category, which combines analog front-end measurement, configurable button logic, and digital communication. Unlike a mechanical switch, a CapSense controller can provide sealed user interfaces, compact layouts, and configurable behavior without exposing moving electrical contacts.
The CY8C20110 supports four to ten capacitive buttons through its 10 CapSense I/O resources. Its I2C interface provides a straightforward connection to a host microcontroller for configuration and status communication. Configuration is stored in onboard nonvolatile memory so that the controller can load its operating configuration automatically at power-on. The device is also optimized for LED dimming in backlight applications through 15 selectable duty cycles.
The CY8C20110-SX2I combines sensing and control functions without requiring a separate host processor to perform basic touch detection. Its operating range of 2.4 V to 2.9 V suits low-voltage embedded systems where supply headroom is constrained. The industrial temperature rating of -40°C to 85°C supports operation across commercial and industrial ambient environments when the complete assembly is designed and tested for those conditions.
Typical uses include appliance control panels, compact capacitive keypads, lighting controls, backlight dimming interfaces, and embedded touch buttons. In a keypad, multiple CY8C20110 I/O resources can support individual electrodes, while the host reads touch events over I2C. The device is particularly useful when the mechanical design requires a flush panel, sealed enclosure, or a product appearance based on illuminated capacitive controls rather than discrete switches.
Designers should account for electrode geometry, guard components, environmental compensation, connector capacitance, and the effect of enclosure materials. The I2C bus must also be checked for address availability and pull-up requirements on the assembled system. Because the verified product information does not provide a complete public pin map, PCB designers should use the manufacturer pinout and reference design rather than infer connections from the package outline.
This page combines verified manufacturer and distributor information, package and interface constraints, drop-in alternatives, application guidance, and design notes. It highlights where the CY8C20110-SX2I fits within capacitive user-interface designs and where replacement decisions require additional firmware, firmware-compatibility, and board-level validation.
直接替换替代料： CY8C20110-SX2I ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： CY8C20110-SX2I （相同外形与封装尺寸） ——差异在于 Product Type, Package, Package Type, Sensor Type.
CY8C20110-SX1I
✅ 直接替换📋 参考替代料（不在目录中）
CY8C20100-SX2I
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C20100-SX1I
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C20111-SX1I
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →CY8C20111-SX2I
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C20110-SX2I 规格参数
| Product Type | CapSense Express capacitive touch controller |
| CapSense I/O Pins | 10 pins |
| Supported Capacitive Buttons | 4 to 10 buttons |
| Host Interface | I2C |
| Operating Supply Voltage Range | 2.4 V to 2.2.9 V |
| 工作温度范围 | -40°C to 85°C |
| 封装 | 16-pin SOIC |
| 安装类型 | Surface mount |
| Configuration Storage | Onboard nonvolatile memory |
| Power-On Configuration Loading | Automatic loading |
| LED Dimming Duty Cycles | 15 selectable duty cycles |
| LED Dimming Optimization | Backlight applications |
| Product Series | CapSense Express PSOC 201xx |
| 传感器类型 | Capacitive touch sensing |
| Manufacturer Document Package Code | PG-DSO-16-801 |
CY8C20110-SX2I pg-dso-16-801 引脚配置指南
CY8C20110-SX2I（pg-dso-16-801 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： CY8C20110-SX2I.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CY8C20110-SX2I 适用于 6 应用s: Appliance Control Panel, Backlight Dimming Control, Industrial Equipment Keypad, Consumer Touch Interface, Lighting and Dimmer Interface, Embedded Capacitive Keypad.
Appliance Control Panel
The CY8C20110-SX2I fits appliance control panels requiring four to 10 capacitive buttons in a compact 16-pin SOIC footprint. Its 10 CapSense I/O resources allow the designer to map multiple touch zones to a sealed or flush front panel without exposing mechanical switches. The controller communicates with the appliance mainboard through I2C, while onboard nonvolatile memory supports automatic configuration loading at power-on. Because the verified supply range is only 2.4 V to 2.9 V, the appliance power tree must maintain that range during startup and operation. Electrode geometry, panel material, grounding, and humidity can alter measured capacitance, so the assembled panel must be tuned and tested rather than validated only with a loose breadboard.
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Backlight Dimming Control
The CY8C20110-SX2I is suitable for capacitive backlight controls because the device documentation identifies optimization for LED dimming through 15 selectable duty cycles. A user can place a touch button beside a backlight and have the system controller read the resulting event over I2C, after which the host applies the selected brightness level to the external LED driver. Keeping the touch controller separate from the LED power stage helps organize the design into sensing, communication, and drive functions. The touch electrode still needs adequate spacing and guarding, and the final dimming response depends on the selected duty cycle, the LED driver, and the host firmware. This arrangement is useful in appliances and industrial panels with compact illuminated controls.
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Industrial Equipment Keypad
The CY8C20110-SX2I can support a compact industrial keypad containing four to 10 capacitive controls. Its -40°C to 85°C operating-temperature specification provides a suitable component-level range for extended commercial and industrial environments, while the 16-pin SOIC package supports conventional surface-mount assembly. The I2C interface allows an industrial controller to receive input status and coordinate the keypad with other machine functions. Designers should provide a clean, stable 2.4 V to 2.9 V supply and evaluate conductive contamination, condensation, gloves, and changes in enclosure material. The component rating alone does not define touch performance; electrode geometry and environmental validation remain necessary for a reliable user interface.
推荐
Consumer Touch Interface
For consumer products, the CY8C20110-SX2I supports a modern button-based interface using four to 10 capacitive sensing channels without mechanical switch contacts. The controller's 10 CapSense I/O pins permit flexible electrode assignment, and I2C provides a direct link to a product microcontroller. Onboard nonvolatile configuration enables automatic loading at power-on, reducing host initialization work when the intended design is validated in advance. The 2.4 V to 2.9 V operating range requires careful integration with a low-voltage system rail, including sufficient startup margin. Designers should also evaluate cosmetic panel finishes, hand moisture, cable coupling, and charging-system interference before mass production because those factors directly influence capacitive measurement stability.
推荐
Lighting and Dimmer Interface
The CY8C20110-SX2I is applicable to lighting controls that use capacitive touch as the user command interface. Its verified support for 15 selectable LED-duty-cycle options provides a defined set of dimming selections, while the I2C port lets a host controller translate a touch event into the required external-driver command. This arrangement separates low-energy user input from the potentially higher-current LED power stage and makes it possible to place a sealed touch surface near an illuminated control. The 16-pin SOIC package is convenient for compact boards, but the 2.4 V to 2.9 V operating range must be respected. Firmware should also debounce, report, and apply the selected level without creating visible flicker or unexpected brightness transitions.
推荐
Embedded Capacitive Keypad
The CY8C20110-SX2I is well suited to an embedded capacitive keypad connected to a host processor over I2C. Four to 10 buttons can be supported by the available CapSense resources, and the automatic power-on loading of onboard nonvolatile configuration can simplify deterministic startup behavior. The controller's 16-pin SOIC package can be placed on a compact mixed-signal PCB, subject to normal analog-layout practices for the sensing pins. A successful implementation must coordinate electrode spacing, ground reference, shielding or guarding, and the host's firmware interpretation of touch events. Changes in cable length, panel adhesives, or nearby switching circuitry can influence the sensor baseline, making production validation of the complete mechanical assembly important.
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推荐产品汇总
工程参考数据： CY8C20110-SX2I ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | CY8C20110-SX1I | CY8C20100-SX2I | CY8C20100-SX1I | CY8C20111-SX1I | CY8C20111-SX2I |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | 16-pin SOIC | 16-pin SOIC - same package | 16-pin SOIC - same package | 16-pin SOIC - same package | 16-pin SOIC - same package | 16-pin SOIC - same package |
关键差异点
- Supports a broad configurable button count within a compact controller （对比 CY8C20111-SX2I)
- Verified low-voltage operating range and industrial temperature grade （对比 CY8C20100-SX2I)
- Onboard nonvolatile configuration enables automatic power-on loading （对比 CY8C20100-SX1I)
- Defined backlight-control feature set （对比 CY8C20111-SX1I)
设计说明
Place the CY8C20110-SX2I and its supporting components in accordance with the manufacturer layout guidance, keeping sensor connections away from noisy switching nodes. Because the verified material confirms capacitive sensing and I2C functionality but does not provide a complete PCB reference layout, do not invent trace dimensions or grounding geometry. Use the official application guidance and evaluate electrode return paths, guarding, and connector placement on the assembled board.
Design the associated power rail for the verified 2.4 V to 2.9 V operating range under temperature and load, not only at nominal room temperature. Confirm startup behavior, output accuracy, and any configuration-download requirements against the manufacturer datasheet. The controller can operate from onboard nonvolatile configuration at power-on, but the host and supporting circuitry must still satisfy the same supply constraints during initialization.
Do not judge touch performance from a loose controller board when the final product uses a panel, adhesive, enclosure, cable, or shield. Those mechanical and electrical elements can change the sensing baseline and coupling. Test button response across expected temperature, humidity, supply, panel tolerances, and nearby noise sources, and recalibrate only according to the manufacturer's procedure. A component-level -40°C to 85°C rating does not guarantee a specified user experience in every enclosure.
Treat the I2C bus as a shared interface and verify address selection, pull-up requirements, capacitance, and bus compatibility with the host and other peripherals. The verified data does not disclose the electrical timing or address, so those details must come from the official manufacturer documentation. Keep the firmware able to distinguish communication faults from genuine touch events and define a safe behavior for an unavailable or unconfigured controller.
合规信息
The supplied verified data does not explicitly state the target's RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred.