CY8C20111-SX1I - One-Button Capacitive Touch | Infineon
料号： CY8C20111-SX1I ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
CY8C20111-SX1I 概述
A capacitive-touch controller is an integrated circuit that measures changes in capacitance caused by a conductive surface, typically a copper button or pad, and converts that change into a digital output. The CY8C20111 belongs to the broader hierarchy of capacitive sensing integrated circuits, touch controllers, interface controllers, and embedded mixed-signal semiconductors. CapSense controllers are useful in appliance controls, access panels, medical equipment, and industrial interfaces where sealed or low-profile controls are preferred.
The verified listing identifies the CY8C20111 as the one-button member of the CapSense Express family. The same source states that CY8C20121 supports two capacitive sensing buttons and two general-purpose outputs, while CY8C20111 supports one capacitive sensing button and one general-purpose output. This distinction is important when comparing the devices: the one-button CY8C20111 may be the simpler choice for a single touch zone, whereas CY8C20121 provides additional sensing and output resources.
The I2C/2-Wire interface allows the controller to participate in a host-controlled embedded system rather than operating as a completely independent user interface. Designers should confirm host address, serial timing, pull-up requirements, firmware behavior, and electrical limits against the manufacturer datasheet before finalizing the interface. The 8-SOIC package supports conventional surface-mount assembly, although the verified material does not provide dimensions or pin numbering.
Typical use cases include touch panels for household appliances, compact control modules, equipment front panels, and low-profile controls where a conventional mechanical switch would be undesirable. The capacitive sensing electrode should be designed with the controller’s recommended layout, guarding, shield, and grounding techniques. Environmental factors such as moisture, nearby conductors, enclosure materials, and human-body loading can affect sensor performance.
The CY8C20111-SX1I is best suited to designers seeking a dedicated one-button touch controller with serial connectivity in an established SOIC footprint. Before purchasing, verify current lifecycle status, pricing, availability, temperature range, supply voltage, operating current, output timing, and the exact pinout using the latest manufacturer documentation.
This page combines verified distributor identification, package and interface information, source traceability, and application guidance. It does not infer electrical limits, pricing, pin names, or compliance claims that are absent from the supplied data.
直接替换替代料： CY8C20111-SX1I ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
CY8C20111-SX1IT
✅ 直接替换📋 参考替代料（不在目录中）
CY8C20142-SX1I
✅ 直接替换📋 参考替代料（不在目录中）
CY8C20121-SX1I
✅ 直接替换📋 参考替代料（不在目录中）
CY8CMBR3102-SX1I
✅ 直接替换📋 参考替代料（不在目录中）
CY8C20111-SX1I 规格参数
| Product Type | CapSense Express capacitive-touch controller |
| Number of Capacitive Touch Buttons | 1 button |
| General-Purpose Outputs | 1 output |
| 接口 | I2C/2-Wire |
| 封装 | 8-SOIC |
| Package Type | 8-pin SOIC |
| 安装类型 | Surface Mount |
| Manufacturer | Infineon Technologies |
| Original Product Family | CapSense Express |
| Application Category | Capacitive touch button |
| 传感器类型 | Capacitive sensing |
CY8C20111-SX1I 8-pin soic 引脚配置指南
CY8C20111-SX1I（8-pin soic 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： CY8C20111-SX1I.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CY8C20111-SX1I 适用于 6 应用s: Appliance Touch Control, Equipment Front Panel, Access-Control Interface, Medical Device Control, Consumer Accessory Button, Battery-Powered Sensor Module.
Appliance Touch Control
The CY8C20111-SX1I fits a single-button appliance interface where a sealed capacitive surface is preferable to a mechanical switch. Its verified one-button architecture limits the control panel to one touch zone, while the I2C/2-Wire interface can report state to a host controller. The 8-SOIC package also supports conventional surface-mount PCB assembly. The electrode geometry, shield, grounding, and enclosure material must be validated in the final mechanical design.
推荐
Equipment Front Panel
A single capacitive button can provide a clean front-panel control for laboratory, industrial, or instrumentation equipment. The CY8C20111-SX1I is appropriate when the panel needs one user action rather than a keypad, and the I2C/2-Wire connection allows a system controller to monitor the touch event. Use careful sensor routing and grounding to reduce coupling from adjacent display, relay, or switching circuitry. Exact timing and electrical limits require the manufacturer datasheet.
推荐
Access-Control Interface
The CY8C20111-SX1I can serve as the sensing element in a compact access-control or authorization interface that uses one touch event to trigger a host-controlled action. The single-channel arrangement simplifies user interaction and reduces the number of sensing electrodes. Designers should account for finger loading, moisture, conductive handles, and enclosure geometry because these conditions influence capacitive transfer. Firmware should debounce and interpret events according to the controller’s verified timing behavior.
推荐
Medical Device Control
A one-button capacitive interface may be useful in medical equipment where a sealed, low-profile control surface is desirable. The CY8C20111-SX1I provides a dedicated touch-sensing channel and serial host communication, but the supplied data does not establish medical certification, isolation, leakage-current compliance, or extended-temperature suitability. Those requirements must be independently verified before clinical deployment. Mechanical cleaning, fluid exposure, and conductive patient-contact surfaces should be evaluated experimentally.
推荐
Consumer Accessory Button
The CY8C20111-SX1I can add a compact touch control to a consumer accessory or compact control module without requiring a conventional tactile switch. Its one-button format is appropriate for wake, mode, or activation functions, while I2C/2-Wire communication lets a nearby controller manage the event. The final design should test sensitivity with the production enclosure and expected touch surfaces, and should maintain separation from noisy power or display circuitry. The available verified material does not specify output drive or timing values.
推荐
Battery-Powered Sensor Module
A single touch button may provide a user wake or configuration input on a battery-powered sensor module. The CY8C20111-SX1I’s dedicated touch-controller architecture can offload sensing from the application processor, but the available data does not state sleep current, active current, or supply voltage. Low-power suitability must therefore be checked in the full datasheet. The I2C/2-Wire connection should be configured so the host can wake the system efficiently and avoid unnecessary bus traffic.
推荐
推荐产品汇总
工程参考数据： CY8C20111-SX1I ——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 | CY8C20111-SX1IT | CY8C20142-SX1I | CY8C20121-SX1I | CY8CMBR3102-SX1I |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Infineon Technologies | Cypress Semiconductor | Cypress Semiconductor | Cypress Semiconductor | Infineon Technologies |
| Interface | I2C/2-Wire | I2C/2-Wire | I2C/2-Wire | I2C/2-Wire | I2C |
| Application Category | Capacitive touch button controller | Capacitive touch button controller | Capacitive touch controller | Two-button capacitive touch controller | CapSense controller |
| Surface Mount | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Dedicated one-button sensing configuration （对比 CY8C20121-SX1I)
- Single general-purpose output resource （对比 CY8C20121-SX1I)
- I2C/2-Wire host connectivity （对比 CY8CMBR3102-SX1I)
设计说明
Keep the capacitive sensor trace short and follow the manufacturer’s recommended electrode, guard, and shield arrangement. Route the sensing node away from switching nodes, high-current returns, oscillators, and display connectors. Because the supplied data does not include exact layout dimensions, use the manufacturer datasheet and tune the final electrode with the production enclosure rather than copying generic values.
Treat the I2C/2-Wire bus as a shared communication resource and verify pull-up voltage, rise time, capacitance, and maximum bus speed from the datasheet. Place any required pull-up components close to the bus endpoints and keep the sensing trace away from the serial route where possible. Confirm host firmware behavior and debounce requirements before production release.
Do not assume CY8C20121 is interchangeable with CY8C20111: the verified family data shows two capacitive buttons and two general-purpose outputs for CY8C20121 versus one button and one output for CY8C20111. Also do not infer automotive qualification, temperature limits, electrical ratings, or RoHS status from the family name. Verify these details in the latest manufacturer documentation.
合规信息
Compliance claims are not present in the supplied verified data. AEC-Q100 is marked not_applicable only because no automotive qualification is stated; this is not evidence that the part is unsuitable for every automotive or industrial requirement.
