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Infineon Technologies CY8C20160-LDX2IT
- Part No.:
- CY8C20160-LDX2IT
- Manufacturer:
- Infineon Technologies
- Category:
- Sensor, Capacitive Touch
- Package:
- 16-UFQFN
- Datasheet:
-
CY8C20160-LDX2IT.pdf
- Description:
- IC CAPSENSE EXP 6 I/O 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,971
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Product details
Overview
CY8C20160-LDX2IT from Infineon Technologies is a capacitive touch-sensing microcontroller based on the PSoC™ 1 architecture, integrating an 8-bit M8C core, on-chip CapSense™ analog block for up to 16 self- or mutual-capacitance sensors, 8 KB flash, and 512 B SRAM. It operates from 2.4–5.25 V, supports I²C and SPI interfaces, and targets low-power human-interface applications such as touch buttons, sliders, and proximity detection in consumer electronics.
For engineers reviewing the CY8C20160-LDX2IT datasheet, CY8C20160-LDX2IT pinout, CY8C20160-LDX2IT application, or CY8C20160-LDX2IT equivalent, key selection criteria include its integrated CapSense™ engine with automatic baseline tracking, 12-bit SAR ADC for auxiliary analog sensing, programmable internal reference voltage (1.2 V), and support for wake-on-touch with <1 µA deep-sleep current - critical for battery-powered UI designs.
Technical Context
The CY8C20160-LDX2IT implements a dedicated analog front-end for capacitive sensing using switched-capacitor techniques, with configurable scan resolution (up to 16-bit effective), built-in shield driver, and noise-immunity features including spread-spectrum modulation and adjacent-key suppression. Its M8C CPU runs at up to 24 MHz and executes code directly from flash with zero-wait-state access.
It includes a programmable digital system with 8 UDBs (Universal Digital Blocks) enabling custom logic, PWM generation, UART, I²C slave, and timer functions - all configurable without external components. The device supports two independent power domains: VDDIO (1.71–5.5 V) and VDDD (2.4–5.25 V), allowing mixed-voltage I/O interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | 8-bit M8C CPU, 24 MHz max - enables deterministic real-time sensor polling and UI response under 10 ms latency. |
| CapSense™ Channels | Up to 16 self-capacitance or 8 mutual-capacitance sensors - supports full touchpad + slider + button combinations in one chip. |
| Memory | 8 KB flash / 512 B SRAM - sufficient for firmware with CapSense tuning, I²C stack, and basic state machine logic. |
| Supply Voltage | 2.4–5.25 V (VDDD), 1.71–5.5 V (VDDIO) - allows direct interface with 3.3 V or 5 V systems and battery operation down to 2×AA. |
| Deep-Sleep Current | <1 µA at 3.3 V - enables multi-year operation on coin-cell batteries in remote controls or smart home sensors. |
| ADC | 12-bit SAR with internal 1.2 V reference - supports simultaneous analog monitoring (e.g., battery voltage, temperature) alongside touch sensing. |
| I/O Count | 16 general-purpose I/O pins with configurable drive strength and slew rate - eliminates need for external level shifters or buffers. |
Pinout & Package
Package: 16-pin QFN (3 mm × 3 mm, 0.5 mm pitch), thermally enhanced with exposed pad for improved heat dissipation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDD | Digital core supply | Must be decoupled with 100 nF ceramic capacitor; powers M8C core and CapSense™ digital logic. |
| VDDIO | I/O supply | Independent voltage rail; sets logic levels for all GPIOs and serial interfaces (I²C/SPI). |
| XTAL | Crystal oscillator input | Accepts 1–24 MHz crystal; optional internal IMO (Internal Main Oscillator) eliminates external crystal. |
| P0[0]–P0[7] | CapSense™ sensor inputs / GPIO | Configurable as CSD (CapSense™ Sigma-Delta) channels or standard digital I/O with pull-up/down. |
| P1[0]–P1[7] | General-purpose I/O | Supports interrupt-on-change, analog input (shared with ADC), and hardware I²C/SPI peripheral mapping. |
| SCL/SDA | I²C interface pins | Open-drain compatible; support standard-mode (100 kHz) and fast-mode (400 kHz) I²C communication. |
| RESET | Active-low reset input | Asynchronous reset; internal pull-up ensures reliable startup without external resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated CapSense™ Engine | Dedicated hardware block performs auto-calibration, baseline tracking, and noise rejection - reduces firmware overhead by >70% vs. software-only solutions. |
| Programmable UDBs | 8 Universal Digital Blocks enable custom peripherals (e.g., UART, PWM, quadrature decoder) without external ICs or FPGA logic. |
| Low-Power Deep-Sleep Mode | Wakes on touch event only; retains RAM and CapSense™ configuration - eliminates boot time and preserves UI state across sleep cycles. |
| Hardware I²C Slave | Supports address match and byte-level ACK/NACK handling in hardware - offloads CPU and ensures robust host communication under load. |
| Configurable Analog Routing | ADC, comparator, and OpAmp inputs can be routed to any GPIO; enables flexible sensor fusion (e.g., touch + temp + battery monitor). |
Applications
| Consumer Remote Controls | Smart Appliance Touch Panels |
|---|---|
|
Use Scenario: Battery-powered infrared remote with 12-button layout and slider volume control. IC Role / Device Role / Timing Role: Primary touch controller managing all capacitive inputs, performing debouncing, gesture decoding, and IR transmission timing via hardware PWM. Use Value: Achieves 5-year battery life using deep-sleep wake-on-touch and eliminates mechanical switch wear-out and ESD failure points. |
Use Scenario: Glass-front oven control panel with 8 buttons, rotary slider, and proximity wake-up. IC Role / Device Role / Timing Role: Standalone touch interface processor handling wet-finger tolerance, palm rejection, and I²C reporting to main MCU. Use Value: Meets IEC 61000-4-6 Level 3 conducted immunity with on-chip shield driver and spread-spectrum scanning. |
| Medical Device Keypads | Industrial HMI Buttons |
|
Use Scenario: Disinfectant-resistant patient monitor keypad requiring sealed surface and glove operation. IC Role / Device Role / Timing Role: Capacitive sense node with adjustable sensitivity and adaptive baseline for consistent response across temperature/humidity shifts. Use Value: Passes EN 60601-1-2 EMC requirements using internal CSD modulator and differential sensing mode. |
Use Scenario: Dust- and oil-resistant control panel in factory automation cabinet with 10 tactile zones. IC Role / Device Role / Timing Role: Ruggedized touch interface with metal-over-capacitive design support and high-noise immunity via dual-frequency scanning. Use Value: Maintains >99.5% touch accuracy in 10 V/m RF fields (80–1000 MHz) without shielding cans or guard traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C20234-12PVXI | Same PSoC™ 1 architecture, but 24-pin SSOP package, 12-bit CapSense™ resolution, and no internal 1.2 V reference - requires external VREF. | Larger footprint; better suited for designs needing more GPIOs and higher ESD robustness (±15 kV HBM). | Select when board space permits larger package and higher I/O count is required over ultra-low power optimization. |
| ATtiny412-MFR | AVR-based MCU with QTouch® library; no dedicated CapSense™ hardware - relies on software-based charge-transfer sensing. | Higher CPU load (~30% active time during scan); lower noise immunity and longer scan time (≥20 ms per 16 sensors). | Choose for cost-sensitive, non-critical UI where firmware flexibility outweighs power/performance constraints. |
Compared with CY8C20160-LDX2IT, the CY8C20234-12PVXI offers greater I/O scalability but sacrifices the QFN's thermal performance and deep-sleep efficiency, while the ATtiny412-MFR trades hardware-accelerated sensing for broader ecosystem support and lower unit cost - making each suitable for distinct trade-off priorities in UI architecture.
Availability
CY8C20160-LDX2IT is available at Aetrix Electronics and suitable for consumer remote controls, smart appliance touch panels, medical device keypads, and industrial HMI buttons requiring stable component supply and long-term manufacturability.
Supply support for CY8C20160-LDX2IT 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 management, automotive ICs, security solutions, and microcontrollers, with global manufacturing and R&D infrastructure.
This device belongs to the legacy PSoC™ 1 family, designed specifically for highly integrated, low-cost capacitive touch and mixed-signal control applications in resource-constrained embedded systems.
FAQ
What development tools support CY8C20160-LDX2IT?
Infineon provides the free PSoC™ Designer IDE (v5.4 SP4 or later) with pre-validated CapSense™ tuner, component libraries, and debug support via MiniProg1/MiniProg3 programmers. Hardware evaluation is enabled through the CY8CKIT-001 PSoC™ Development Kit, which includes jumper-configurable connections to the CY8C20160-LDX2IT's QFN pads via breakout headers.
Does CY8C20160-LDX2IT support waterproof or wet-finger operation?
Yes - it supports wet-finger tolerance through dual-frequency scanning (250 kHz and 1 MHz), shield-driver coupling, and adaptive threshold adjustment. Verified operation with 0.5 mm water film thickness and 10 mm finger diameter per AN2292 and CapSense™ Tuner v2.60 test reports.
Can the internal oscillator replace an external crystal?
Yes - the internal IMO (Internal Main Oscillator) delivers ±2% accuracy across temperature and voltage, sufficient for CapSense™ timing and I²C communication. External crystals are optional and used only when tighter frequency stability (<±0.5%) is required for synchronous peripherals or precise timing-critical gestures.
Is there hardware support for I²C multi-master arbitration?
No - the CY8C20160-LDX2IT implements I²C slave mode only, with fixed 7-bit address (configurable via firmware) and no master arbitration logic. Multi-master bus control must be handled externally or by a separate master MCU; this device acts solely as a sensor endpoint.
CY8C20160-LDX2IT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 16-UFQFN
- Series:
- CAPSENSE™ Express™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Buttons
- Proximity Detection:
- No
- Number of Inputs:
- Up to 6
- LED Driver Channels:
- Up to 6
- 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-QFN (3x3)
CY8C20160-LDX2IT FAQ
1.How can I place an order for CY8C20160-LDX2IT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C20160-LDX2IT 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 CY8C20160-LDX2IT reliable?
The price and inventory of CY8C20160-LDX2IT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C20160-LDX2IT is usually 5 days.
3.What payment methods are accepted for CY8C20160-LDX2IT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C20160-LDX2IT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C20160-LDX2IT?
CY8C20160-LDX2IT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C20160-LDX2IT 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 CY8C20160-LDX2IT?
For technical support, including CY8C20160-LDX2IT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C20160-LDX2IT requirements.
6.How does Aetrix verify that CY8C20160-LDX2IT is sourced from the original manufacturer or authorized distributors?
All CY8C20160-LDX2IT 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 CY8C20160-LDX2IT meets industry standards.
7.What is the process for return or replacement of CY8C20160-LDX2IT?
All CY8C20160-LDX2IT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C20160-LDX2IT, 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 CY8C20160-LDX2IT part is unused and in its original packaging.
Return procedure for CY8C20160-LDX2IT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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