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Infineon Technologies CY8C20110-SX2I
- Part No.:
- CY8C20110-SX2I
- Manufacturer:
- Infineon Technologies
- Category:
- Sensor, Capacitive Touch
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY8C20110-SX2I.pdf
- Description:
- IC CAPSENSE EXP 10 I/O 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,445
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Product details
Overview
CY8C20110-SX2I from Cypress Semiconductor is a 10-button capacitive touch controller with integrated LED dimming PWM, operating from 2.4–2.9 V, 3.1–3.6 V, or 4.75–5.25 V supply, delivering 1.5 mA active current and 4 µA deep sleep current, used in backlight control for LCD monitors and portable DVD players.
For engineers reviewing the CY8C20110-SX2I datasheet, CY8C20110-SX2I pinout, CY8C20110-SX2I application, or CY8C20110-SX2I equivalent, key selection criteria include I2C-configurable CapSense sensitivity, 15-step LED dimming per GPIO, nonvolatile register storage, interrupt-driven wake capability, and support for wide sensor capacitance (1–4.7 nF).
Technical Context
The device integrates a noise-immune capacitive sensing core with RF/AC immunity and low radiated EMC, coupled with an I2C-configurable control engine that stores settings in on-chip nonvolatile memory for automatic power-on initialization.
It supports four distinct LED dimming modes-intensity change on button toggle, flash on press, hold after transition, and intensity toggle-each programmable via I2C registers, with all 10 GPIOs capable of PWM output and configurable as CapSense inputs or digital I/O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitive Inputs | 10 configurable buttons with robust algorithm for high SNR and noise immunity |
| Operating Voltage Ranges | 2.4–2.9 V, 3.1–3.6 V, and 4.75–5.25 V - enables direct integration into multiple rail systems |
| Active Current | 1.5 mA continuous scan - supports real-time touch response without thermal penalty |
| Deep Sleep Current | 4 µA - sustains battery life in portable devices during standby |
| I2C Data Rate | Up to 400 kbps with clock stretching support - ensures reliable host communication under load |
| LED Dimming Resolution | 15 selectable PWM duty cycles - enables precise backlight intensity grading |
| Temperature Range | –40 °C to +85 °C - qualified for industrial and consumer embedded environments |
Pinout & Package
Available in 16-pin QFN (3 × 3 × 0.6 mm, no e-pad) and 16-pin SOIC packages. Pin functions are fully configurable via I2C; GP0[0]–GP0[4] and GP1[0]–GP1[4] serve dual roles as CapSense inputs or GPIOs with PWM capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GP0[0]–GP0[4], GP1[0]–GP1[4] | Configurable GPIO / CapSense Input | All 10 pins support PWM dimming and capacitive sensing; GP1[1]/GP1[2] excluded from LED drive due to factory power-up behavior |
| I2C SCL / I2C SDA | I2C Interface | Supports 1.8 V–5.25 V signaling with internal pull-up option and 400 kbps operation |
| XRES | Reset Input | Active-high external reset with internal pull-down - enables system-level synchronization |
| VDD / VSS | Power Supply | Wide-input voltage support across three discrete ranges; decoupling required per layout guidelines |
| CSint | Integrating Capacitor Input | External capacitor (1–4.7 nF) only needed if 5:1 SNR not achieved - minimizes BOM count |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile Configuration Storage | Settings retained across power cycles - eliminates host re-initialization overhead |
| Run-Time I2C Reconfiguration | Dynamic tuning of sensitivity, debounce, and LED behavior without reset - enables adaptive UI |
| Four LED Dimming Modes | Mode-selectable intensity response (toggle/flash/hold/change) - matches diverse user interface logic |
| RF/AC Noise Immunity | Validated against EN55022 Class B emissions and conducted RF susceptibility - reduces EMI filtering cost |
| No External Components Required | Single-chip solution with internal oscillator, regulators, and charge pump - simplifies PCB layout |
Applications
| Printer Control Panel | LCD Monitor Backlight |
|---|---|
Use Scenario: Touch-based function selection and status feedback on multifunction printer front panels. IC Role / Device Role / Timing Role: Capacitive button controller with synchronized LED indicators for job status and mode confirmation. Use Value: Eliminates mechanical switches and discrete LED drivers; reduces layer count and assembly steps. | Use Scenario: Adjustable brightness control for LCD monitor backlights using touch-sensitive up/down keys. IC Role / Device Role / Timing Role: Dual-role device: senses user input and drives backlight LEDs with 15-step PWM dimming. Use Value: Enables smooth, flicker-free intensity transitions without external PWM generator or microcontroller intervention. |
| Portable DVD Player UI | Cellular Handset Keypad |
Use Scenario: Compact touch interface for playback controls and menu navigation in space-constrained portable media devices. IC Role / Device Role / Timing Role: Low-power CapSense engine with deep sleep wake-on-interrupt - extends battery runtime. Use Value: Achieves 4 µA standby current while maintaining instant wake responsiveness - critical for portable battery life. | Use Scenario: Durable, sealed touch keypad replacing mechanical keys in entry-level mobile handsets. IC Role / Device Role / Timing Role: High-sensitivity capacitive controller immune to moisture, dust, and RF interference from cellular transceivers. Use Value: Maintains >5:1 SNR under GSM burst transmission - prevents false touches during call handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MTCH101-I/ST | 8-button capacity, no integrated LED dimming, 2.0–5.5 V operation, 2.5 µA deep sleep | Lacks PWM output; requires external LED driver for backlight control | Select when only touch sensing is needed and LED control is handled elsewhere |
| TTP223B-BA6 | Single-button fixed-function IC, no I2C, no nonvolatile storage, 2.0–5.5 V, 1.5 µA sleep | Not reconfigurable; limited to basic ON/OFF toggle with no dimming or multi-button support | Select for ultra-low-cost, single-key applications where flexibility is unnecessary |
Compared with MTCH101-I/ST and TTP223B-BA6, CY8C20110-SX2I uniquely combines 10-button sensing, 15-step LED dimming on all GPIOs, and field-reprogrammable configuration - making it optimal for integrated UI subsystems requiring both input and visual feedback.
Availability
CY8C20110-SX2I is available at Aetrix Electronics and suitable for LCD monitor backlight control, printer control panels, and portable DVD player UIs requiring stable component supply and long-term production continuity.
Supply support for CY8C20110-SX2I 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
Cypress Semiconductor (now part of Infineon Technologies) designs high-performance mixed-signal ICs for embedded systems, with expertise in programmable analog/digital architectures and human interface solutions.
The CapSense Express™ product line targets cost-sensitive, space-constrained consumer and industrial UIs requiring plug-and-play capacitive sensing without firmware development - optimized for rapid integration and minimal external components.
FAQ
What is the maximum number of capacitive buttons supported by CY8C20110-SX2I?
CY8C20110-SX2I supports up to 10 capacitive buttons. Its pinout provides 10 configurable GPIOs (GP0[0]–GP0[4] and GP1[0]–GP1[4]), all usable as CapSense inputs. The device's internal sensing engine is calibrated for 10-button operation, and its nonvolatile memory stores dedicated parameters for each channel.
Does CY8C20110-SX2I require an external crystal or resonator?
No. CY8C20110-SX2I uses an internal precision oscillator for timing; no external crystal, resonator, or clock source is required. The device achieves stable CapSense scanning and I2C communication using its on-chip RC oscillator, which is factory-trimmed for accuracy across voltage and temperature.
Can CY8C20110-SX2I drive LEDs directly without external transistors?
Yes - all 10 GPIOs support strong-drive LED output with built-in current capability sufficient for typical indicator LEDs (up to ~10 mA per pin). However, GP1[1] and GP1[2] must be avoided for LED drive due to factory power-up blinking behavior, as documented in the datasheet errata.
How is I2C address configured on CY8C20110-SX2I?
The I2C address is fully configurable via the I2C_ADDR register and stored in nonvolatile memory. No external strapping resistors are needed. The default address is 0x38, but users can assign any valid 7-bit address (0x00–0x7F) through I2C write commands during configuration or runtime.
CY8C20110-SX2I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- CAPSENSE™ Express™
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Verified
- Type:
- Buttons
- Proximity Detection:
- No
- Number of Inputs:
- Up to 10
- LED Driver Channels:
- Up to 10
- 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
CY8C20110-SX2I FAQ
1.How can I place an order for CY8C20110-SX2I through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C20110-SX2I 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 CY8C20110-SX2I reliable?
The price and inventory of CY8C20110-SX2I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C20110-SX2I is usually 5 days.
3.What payment methods are accepted for CY8C20110-SX2I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C20110-SX2I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C20110-SX2I?
CY8C20110-SX2I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C20110-SX2I 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 CY8C20110-SX2I?
For technical support, including CY8C20110-SX2I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C20110-SX2I requirements.
6.How does Aetrix verify that CY8C20110-SX2I is sourced from the original manufacturer or authorized distributors?
All CY8C20110-SX2I 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 CY8C20110-SX2I meets industry standards.
7.What is the process for return or replacement of CY8C20110-SX2I?
All CY8C20110-SX2I units undergo pre-shipment inspection (PSI). If there is an issue with CY8C20110-SX2I, 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 CY8C20110-SX2I part is unused and in its original packaging.
Return procedure for CY8C20110-SX2I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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