My Inquiry
My Account
Infineon Technologies CY8C4025LQI-T411
- Part No.:
- CY8C4025LQI-T411
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 16-UFQFN
- Datasheet:
-
CY8C4025LQI-T411.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 16UFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:961
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4025LQI-T411 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller in the PSoC™ 4000T family, featuring fifth-generation CAPSENSE™ with multi-sense (capacitive + inductive) HMI technology, 48 MHz CPU, 32 KB flash, 4 KB SRAM, and ultra-low-power Deep Sleep mode consuming 6 µA while maintaining always-on touch sensing. It targets wearables, hearables, and IoT edge nodes requiring robust liquid-tolerant user interfaces and sub-200 µA active touch tracking.
For engineers reviewing the CY8C4025LQI-T411 datasheet, CY8C4025LQI-T411 pinout, CY8C4025LQI-T411 application, or CY8C4025LQI-T411 equivalent, key selection criteria include its integrated multi-sense converter (ENOB 13.5-bit, SNR >5:1), hardware-accelerated autonomous sensor scanning, dual reconfigurable SCBs for I²C/SPI/UART, and WLCSP-25 package compatibility with ModusToolbox™ DFU middleware support.
Technical Context
The CY8C4025LQI-T411 implements a dedicated multi-sense converter (MSC) block that performs ratio-metric capacitive and flyback inductive sensing simultaneously, enabling concurrent electrode scanning without CPU intervention. Its MSC supports 16 capacitive sensors or up to six inductive sensor pairs across 40 kHz–5.7 MHz excitation frequencies with spread-spectrum clocking for noise immunity.
System-level timing relies on a ±2% IMO and 40 kHz ILO, while low-power operation is enforced via hardware-triggered wake-from-Deep-Sleep on touch event detection. The device uses SWD for debug, with debug circuits enabled by default but firmware-controllable and permanently disableable for security-critical deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time HMI processing with single-cycle multiply for gesture math. |
| Flash / SRAM | 32 KB flash / 4 KB SRAM - sufficient for CAPSENSE™ middleware + BLE stack coexistence in compact wearables. |
| Power Modes | Deep Sleep: 6 µA with always-on touch; Active: 200 µA avg - enables multi-week battery life in coin-cell-powered hearables. |
| CAPSENSE™ ENOB | 13.5-bit effective resolution - delivers high-fidelity proximity and hover detection with <100 aF noise floor. |
| Inductive Sensing | 6 sensor pairs, 100 nH–200 µH range, 48 MHz system clock - supports metal-over-glass UIs and liquid-level sensing in sealed enclosures. |
| GPIO Count | 21 programmable pins - includes dedicated CAPSENSE™ analog routing and configurable digital I/O with internal pull-ups/downs. |
| Communication | 2 × SCBs - each independently configurable as I²C master/slave, SPI master/slave, or UART - simplifies sensor hub integration. |
Pinout & Package
Package: 25-pin Wafer-Level Chip Scale Package (WLCSP), 0.35 mm pitch, 2.13 mm × 2.13 mm footprint, 0.45 mm height. Compatible with standard SMT reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers all digital logic, analog blocks, and GPIO; requires local 100 nF decoupling. |
| VSS | Digital ground | Primary reference for digital I/O and CPU subsystem; must be connected to PCB ground plane with low-inductance path. |
| P0.0–P0.7 | Programmable GPIO | Support CAPSENSE™ CSD/CSX, SCB, TCPWM, and analog comparator functions; configurable pull-up/down. |
| P2.2 / P2.3 | I²C bootloader interface | Factory-configured SCL/SDA for DFU; address 0x0C; requires external 4.7 kΩ pull-ups per Infineon AN236282. |
| SWDIO / SWCLK | Debug interface | Standard Arm® Serial Wire Debug pins; enable full firmware programming, breakpoint debugging, and trace in production units. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous MSC scanning | Hardware offloads capacitive/inductive sensor acquisition during Deep Sleep - eliminates CPU polling, reducing active time by >90%. |
| Smart sensing algorithm | On-the-fly hardware tuning of sensor parameters (IDAC, scan speed, resolution) - removes manual calibration in mass production. |
| Class-B firmware library | Pre-certified functional safety routines for IEC 61508 SIL2 - accelerates compliance for medical and industrial HMI designs. |
| Hardware filters | Digital filtering (averaging, median, noise rejection) applied before CPU read - improves SNR without software overhead. |
| Bootloader metadata region | 256-byte reserved area at end of flash - stores device-specific product ID (Silicon ID + version) for secure image verification. |
Applications
| Wearable Fitness Tracker | Smart Earbud Touch Panel |
|---|---|
|
Use Scenario: Capacitive touch controls on curved plastic housing exposed to sweat and ambient moisture. IC Role / Device Role / Timing Role: Primary HMI controller performing always-on proximity detection and wet-finger tolerant button press recognition. Use Value: 6 µA Deep Sleep current extends battery life to 14+ days; liquid tolerance avoids false triggers during exercise. |
Use Scenario: Multi-function touchpad on earbud stem for play/pause, volume, and ANC toggle with no physical buttons. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ engine executing mutual-capacitance scans at 100 Hz while CPU remains in sleep. Use Value: Hardware-accelerated scanning reduces active CPU time to <5% duty cycle, preserving 20-hour playback runtime. |
| Industrial Control Knob | Liquid-Level Sensor Module |
|
Use Scenario: Sealed metal-front control panel in factory automation equipment requiring ESD-robust, glove-compatible rotation detection. IC Role / Device Role / Timing Role: Inductive sensing controller driving flyback coils to detect metal rotor position through stainless steel overlay. Use Value: 6 inductive sensor channels support multi-turn knob with 0.1° resolution; spread-spectrum excitation rejects 50/60 Hz EMI. |
Use Scenario: Non-invasive tank level monitoring in chemical dispensers using capacitive sensing through glass or plastic walls. IC Role / Device Role / Timing Role: Multi-sense converter performing simultaneous self-capacitance (level) and proximity (overflow guard) measurements. Use Value: Ratio-metric architecture cancels temperature drift; 13.5-bit ENOB enables ±0.5 mm level accuracy over 0–100 cm range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-power HMI microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4025LQI-S412 | Same die, 64 KB flash / 8 KB SRAM variant; identical pinout and peripherals. | Supports larger firmware images (e.g., dual-mode BLE + CAPSENSE™), but higher BOM cost and power in idle. | Select when future firmware expansion or OTA update headroom is required beyond 32 KB flash. |
| STM32G031K8T6 | No integrated CAPSENSE™; requires external touch controller or GPIO-based RC network; 64 MHz Cortex-M0+, 64 KB flash. | Suitable for basic button/slider UIs only; lacks liquid tolerance, inductive sensing, and hardware-accelerated scanning. | Choose only if design already uses STM32 ecosystem and HMI requirements are limited to dry-environment capacitive buttons. |
Compared with CY8C4025LQI-S412, the -T411 offers optimal cost/power balance for volume wearables; versus STM32G031K8T6, it delivers turnkey multi-sense HMI with zero external components and certified Class-B firmware - critical for rapid certification in consumer medical devices.
Availability
CY8C4025LQI-T411 is available at Aetrix Electronics and suitable for wearable fitness trackers, smart earbuds, industrial control knobs, and liquid-level sensor modules requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4025LQI-T411 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 AG is a German semiconductor manufacturer specializing in power management, sensing, and microcontroller solutions for industrial, automotive, and IoT markets.
The PSoC™ 4000T product line was engineered specifically to deliver ultra-low-power, multi-modal human-machine interfaces with integrated capacitive and inductive sensing - targeting next-generation wearables, hearables, and sealed industrial UIs.
FAQ
Does CY8C4025LQI-T411 support I²C bootloader updates in-system?
Yes. The device ships with a factory-installed I²C bootloader preconfigured on P2.2 (SCL) and P2.3 (SDA) at slave address 0x0C, supporting 400 kbps data rate and DFU via ModusToolbox™ middleware. External 4.7 kΩ pull-up resistors are mandatory, and the bootloader occupies the bottom 12.5 KB of flash (0x00000000–0x00003200).
What is the maximum number of electrodes supported in mutual-capacitance mode?
The CY8C4025LQI-T411 supports up to 16 electrodes in mutual-capacitance (CSX) configuration, enabling 4×4 touchpad grids or multi-button layouts. Each electrode pair is scanned autonomously by the MSC block without CPU involvement, achieving typical frame rates of 100 Hz at 13.5-bit resolution.
Can the inductive sensing channel operate concurrently with capacitive sensing?
Yes. The multi-sense converter executes capacitive and inductive sensing sequences in time-multiplexed fashion under hardware control. Concurrent operation is achieved by interleaving CSX scans and flyback inductive measurements within a single sensor frame, maintaining deterministic timing and shared resource arbitration.
Is SWD debug permanently enabled, and can it be disabled for security?
SWD debug circuits are enabled by default but can be disabled in firmware. Once disabled, re-enabling requires full chip erase (if not flash-protected), clearing protection bits, and reprogramming. All debug interfaces can also be permanently fused off during manufacturing to prevent unauthorized access or phishing attacks.
CY8C4025LQI-T411 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 16-UFQFN
- Series:
- PSOC™ 4000T
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, Microwire, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, POR, PWM, WDT
- Number of I/O:
- 11
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4025LQI-T411 FAQ
1.How can I place an order for CY8C4025LQI-T411 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4025LQI-T411 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 CY8C4025LQI-T411 reliable?
The price and inventory of CY8C4025LQI-T411 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4025LQI-T411 is usually 5 days.
3.What payment methods are accepted for CY8C4025LQI-T411?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4025LQI-T411 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4025LQI-T411?
CY8C4025LQI-T411 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4025LQI-T411 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 CY8C4025LQI-T411?
For technical support, including CY8C4025LQI-T411 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4025LQI-T411 requirements.
6.How does Aetrix verify that CY8C4025LQI-T411 is sourced from the original manufacturer or authorized distributors?
All CY8C4025LQI-T411 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 CY8C4025LQI-T411 meets industry standards.
7.What is the process for return or replacement of CY8C4025LQI-T411?
All CY8C4025LQI-T411 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4025LQI-T411, 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 CY8C4025LQI-T411 part is unused and in its original packaging.
Return procedure for CY8C4025LQI-T411:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4025LQI-T411 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
