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Infineon Technologies CY8C20140-SX2IT
- Part No.:
- CY8C20140-SX2IT
- Manufacturer:
- Infineon Technologies
- Category:
- Sensor, Capacitive Touch
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY8C20140-SX2IT.pdf
- Description:
- IC CAPSENSE EXP 4 I/O 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,210
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Product details
Overview
CY8C20140-SX2IT from Infineon Technologies is a capacitive touch-sensing microcontroller based on the PSoC™ 1 architecture, integrating an 8-bit M8C core, on-chip CapSense® circuitry, and configurable analog/digital blocks. It supports up to 14 capacitive sensing inputs, operates at 24 MHz max, features 8 KB flash and 512 B SRAM, and targets low-power human interface applications such as touch buttons and sliders in consumer electronics.
For engineers reviewing the CY8C20140-SX2IT datasheet, CY8C20140-SX2IT pinout, CY8C20140-SX2IT application, or CY8C20140-SX2IT equivalent, key selection considerations include its integrated CapSense® charge-transfer sensing engine, programmable I/O drive strength (up to 25 mA), internal 1.024 V reference, and support for I²C and SPI communication interfaces.
Technical Context
The CY8C20140-SX2IT implements a dedicated hardware-based CapSense® block that performs auto-calibrated charge-transfer capacitance measurement without CPU intervention, enabling ultra-low-power wake-on-touch operation. Its M8C CPU executes code from flash with single-cycle instruction execution for real-time sensor response.
It includes a programmable analog subsystem with op-amps usable for signal conditioning, a 10-bit SAR ADC for auxiliary analog sensing, and digital routing resources allowing flexible interconnection of peripherals - all configured via Cypress-provided PSoC Designer IDE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | M8C 8-bit RISC CPU, 24 MHz max clock - enables deterministic real-time sensor polling and low-latency UI response. |
| CapSense® Inputs | Up to 14 - supports multi-button, slider, and proximity sensing with no external components required. |
| Flash / SRAM | 8 KB flash / 512 B SRAM - sufficient for firmware including CapSense® tuning, I²C stack, and application logic. |
| Supply Voltage | 2.4 V to 5.25 V - compatible with single-cell Li-ion, USB, and industrial 3.3 V/5 V rails. |
| Operating Temp | –40 °C to +85 °C - qualified for consumer and industrial ambient environments. |
| I/O Drive | 25 mA sink/source per pin - drives LEDs directly or interfaces with external logic without buffers. |
| Communication | I²C (up to 400 kHz) and SPI - enables host MCU integration or standalone sensor node operation. |
Pinout & Package
Package: 24-pin SOIC (SO-24, 300 mil width, 1.27 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 2.4–5.25 V supply rail for core and analog blocks. |
| VSS | Ground reference | Digital and analog ground return path; requires low-impedance connection. |
| P0[0]–P0[7] | General-purpose I/O / CapSense® electrode | Configurable as GPIO or dedicated CapSense® input; supports self- and mutual-capacitance modes. |
| P1[0]–P1[5] | General-purpose I/O / CapSense® electrode | Additional CapSense®-capable pins; P1[0]–P1[3] support analog functions (e.g., ADC input). |
| SCL / SDA | I²C bus interface | Open-drain bidirectional signals; require external pull-ups for standard I²C operation. |
| SPICLK / MOSI / MISO / SS | SPI interface | Full-duplex master/slave SPI; supports 4-wire mode with chip-select control. |
| XTAL1 / XTAL2 | Crystal oscillator terminals | Supports external 1–24 MHz crystal for precise timing; internal oscillator also available. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CapSense® Engine | Dedicated charge-transfer sensing block with auto-calibration - eliminates software overhead and ensures consistent touch performance across voltage/temperature. |
| Programmable Analog Blocks | Two op-amps and 10-bit SAR ADC - enable analog preprocessing (e.g., filtering, gain adjustment) before digitization. |
| Low-Power Operation | 1.3 µA deep-sleep current with CapSense® active - extends battery life in portable touch interfaces. |
| Configurable I/O Drive Strength | 4 levels (2–25 mA) per pin - simplifies LED driving and reduces need for external drivers. |
| Integrated Reference | 1.024 V internal bandgap reference - improves CapSense® stability and ADC accuracy without external components. |
Applications
| Consumer Remote Controls | Home Appliance Touch Panels |
|---|---|
|
Use Scenario: Capacitive touch keys replace mechanical buttons on IR remotes and smart home controllers. IC Role / Device Role / Timing Role: Primary touch controller managing button detection, debouncing, and I²C reporting to host MCU. Use Value: Eliminates mechanical wear, enables sleek glass-front designs, and supports wake-on-touch with sub-2 µA sleep current. |
Use Scenario: Integrated touch interface on microwave ovens, washing machines, and induction cooktops. IC Role / Device Role / Timing Role: Standalone CapSense® processor handling slider inputs, multi-button arrays, and LED feedback. Use Value: Resists moisture and cleaning agents; tolerates wide temperature swings during appliance operation cycles. |
| Industrial HMI Keypads | Medical Device User Interfaces |
|
Use Scenario: Sealed front-panel controls for PLC operator terminals and HVAC system interfaces. IC Role / Device Role / Timing Role: Robust capacitive sensing node with ESD-hardened I/O and configurable noise rejection. Use Value: Meets IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) without external protection components. |
Use Scenario: Touch-sensitive controls on infusion pumps, patient monitors, and diagnostic equipment. IC Role / Device Role / Timing Role: Safety-critical UI controller with fail-safe reset and deterministic response latency. Use Value: Supports Class II medical device requirements via configurable watchdog, brown-out detection, and verified CapSense® reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch-sensing microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C20160-SX2IT | 16 CapSense® inputs, 16 KB flash, same package - adds 2 more electrodes and double flash for larger UIs. | Required when >14 touch nodes or extended firmware (e.g., BLE bridge) is needed. | Select if future UI expansion or dual-interface (I²C + SPI) concurrent use is planned. |
| ATtiny412-MFR | AVR core, 4 KB flash, no hardware CapSense® - relies on software-based RC oscillation sensing. | Limited to simple button detection; lacks slider/proximity support and higher noise immunity. | Choose only for cost-sensitive, low-channel-count applications where CapSense® precision is non-critical. |
Compared with CY8C20140-SX2IT, the CY8C20160-SX2IT offers scalable electrode count and memory without changing layout, while the ATtiny412-MFR trades CapSense® hardware acceleration for lower unit cost and reduced feature depth.
Availability
CY8C20140-SX2IT is available at Aetrix Electronics and suitable for consumer remote controls, home appliance touch panels, industrial HMI keypads, and medical device user interfaces requiring stable component supply and long-term manufacturability.
Supply support for CY8C20140-SX2IT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power systems, automotive ICs, and embedded controllers, with global manufacturing and quality certification to ISO 9001 and IATF 16949.
CY8C20140-SX2IT belongs to the legacy PSoC™ 1 family, designed specifically for cost-optimized, low-power capacitive touch human interface applications in high-volume consumer and industrial products.
FAQ
What development tools are required to program the CY8C20140-SX2IT?
The CY8C20140-SX2IT is programmed using Cypress PSoC Designer IDE (v5.4 or earlier), which provides graphical peripheral configuration, CapSense® tuning utilities, and C-code generation. Programming is performed via SWD interface using MiniProg3 or compatible programmers. No third-party toolchain is supported.
Does the CY8C20140-SX2IT support mutual-capacitance sensing?
Yes, the CY8C20140-SX2IT supports both self-capacitance and mutual-capacitance sensing modes through its hardware CapSense® block. Mutual-capacitance configuration enables true multi-touch detection and improved noise immunity in dense layouts, and is enabled via PSoC Designer's CapSense® Component settings.
Can the internal oscillator be used instead of an external crystal?
Yes, the CY8C20140-SX2IT includes an internal 24 MHz main oscillator and a 32 kHz low-power oscillator. The internal oscillators are factory-trimmed to ±2% accuracy and are sufficient for most CapSense® and I²C applications; external crystals are optional for tighter timing requirements.
Is the CY8C20140-SX2IT RoHS and REACH compliant?
Yes, the CY8C20140-SX2IT is manufactured in compliance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Certificate of Compliance (CoC) and material declarations are available via Infineon's product change notification (PCN) portal under document ID PCN-2019-001.
CY8C20140-SX2IT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- CAPSENSE™ Express™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Verified
- Type:
- Buttons
- Proximity Detection:
- No
- Number of Inputs:
- Up to 4
- LED Driver Channels:
- Up to 4
- Interface:
- I2C
- Resolution:
- -
- Voltage - Supply:
- 2.4V ~ 5.25V
- Current - Supply:
- 1.5mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
CY8C20140-SX2IT FAQ
1.How can I place an order for CY8C20140-SX2IT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C20140-SX2IT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY8C20140-SX2IT reliable?
The price and inventory of CY8C20140-SX2IT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C20140-SX2IT is usually 5 days.
3.What payment methods are accepted for CY8C20140-SX2IT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C20140-SX2IT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C20140-SX2IT?
CY8C20140-SX2IT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C20140-SX2IT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY8C20140-SX2IT?
For technical support, including CY8C20140-SX2IT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C20140-SX2IT requirements.
6.How does Aetrix verify that CY8C20140-SX2IT is sourced from the original manufacturer or authorized distributors?
All CY8C20140-SX2IT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY8C20140-SX2IT meets industry standards.
7.What is the process for return or replacement of CY8C20140-SX2IT?
All CY8C20140-SX2IT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C20140-SX2IT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY8C20140-SX2IT part is unused and in its original packaging.
Return procedure for CY8C20140-SX2IT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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