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Infineon Technologies CY8C4025LQI-T412
- Part No.:
- CY8C4025LQI-T412
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8C4025LQI-T412.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 24UFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:895
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Product details
Overview
CY8C4025LQI-T412 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller in the PSoC™ 4000T family, featuring fifth-generation CAPSENSE™ with multi-sense converter, 48 MHz CPU, 32 KB flash, 4 KB SRAM, and ultra-low-power deep sleep mode (6 µA) with hardware-accelerated touch wake-up. It integrates capacitive and inductive sensing for robust HMI in wearables and IoT edge devices.
For engineers reviewing the CY8C4025LQI-T412 datasheet, CY8C4025LQI-T412 pinout, CY8C4025LQI-T412 application, or CY8C4025LQI-T412 equivalent, key selection criteria include its 16-sensor capacitive + 6-channel inductive sensing capability, 1.71–5.5 V operation range, dual reconfigurable SCBs (I²C/SPI/UART), TCPWM timing blocks, and WLCSP-25 package compatibility with ModusToolbox™ DFU support.
Technical Context
The CY8C4025LQI-T412 implements a dedicated multi-sense converter (MSCLP) with ratio-metric architecture enabling simultaneous capacitive and inductive sensing without CPU intervention. Its Deep Sleep mode maintains full CAPSENSE™ scanning at 6 µA using the 40 kHz ILO and hardware-based wake-on-touch detection.
It features two independent serial communication blocks (SCBs) supporting runtime-reconfigurable I²C, SPI, or UART protocols, plus two 16-bit TCPWM blocks with quadrature decode, center-aligned PWM, and comparator-triggered kill signals - all synchronized to the 48 MHz IMO or external clock sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time sensor fusion and low-latency HMI response without external co-processor |
| Flash / SRAM | 32 KB flash / 4 KB SRAM - sufficient for CAPSENSE™ middleware, bootloader, and application logic in compact wearable firmware |
| Operating Voltage | 1.71 V to 5.5 V - supports single-cell Li-ion, coin cell, or USB-powered designs without LDO overhead |
| Deep Sleep Current | 6 µA with active CAPSENSE™ - enables years of battery life in always-on touch interfaces (e.g., smart earbuds) |
| Sensing Channels | 16 capacitive + 6 inductive sensors - allows hybrid UIs (e.g., wet-proof touch + metal proximity detection on appliance panels) |
| Package | 25-pin WLCSP, 0.35 mm pitch - enables <3.5 mm² PCB footprint for space-constrained hearables and medical patches |
| Debug Interface | Arm® SWD - provides full on-chip debug and trace without additional pins or debug headers |
Pinout & Package
CY8C4025LQI-T412 uses a 25-ball Wafer-Level Chip Scale Package (WLCSP) with 0.35 mm pitch and 2.13 mm × 2.13 mm body size. Ball assignments follow JEDEC MO-220 standard with defined power, ground, analog, digital, and CAPSENSE™-optimized routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main supply input | Accepts 1.71–5.5 V; powers core, analog, and I/O; requires local 100 nF decoupling |
| VSS | Ground reference | Dual ground balls (B1, E5) minimize noise coupling between analog and digital domains |
| P0.0–P0.7 | Programmable GPIO | Support CAPSENSE™ CSD/CSX, SCB, TCPWM, or digital functions; configurable pull-up/down |
| P1.0–P1.7 | Programmable GPIO | Include dedicated inductive sensing excitation (P1.4/P1.5) and return (P1.6/P1.7) pairs |
| P2.2 / P2.3 | I²C bootloader interface | Factory-configured SCL/SDA (address 0x0C) for DFU; require external 4.7 kΩ pull-ups |
| SWDIO / SWCLK | Debug interface | Shared with P0.4/P0.5; enables full programming, breakpoint, and memory inspection via MiniProg4 |
Key Features
| Feature | Design Value |
|---|---|
| Multi-Sense Converter (MSCLP) | Hardware-accelerated concurrent capacitive + inductive sensing with >5:1 SNR and <100 aF noise floor |
| Always-On Touch Detection | Deep Sleep wake-on-touch with autonomous channel scan - eliminates CPU polling overhead |
| Reconfigurable SCBs | Two independent blocks supporting I²C master/slave, SPI master/slave, or UART - no fixed peripheral pinout lock-in |
| Class-B Firmware Library | Pre-certified CAPSENSE™ safety routines compliant with IEC 61508 SIL2 and UL 60730 Annex H |
| Smart Sensing Algorithm | On-the-fly hardware tuning of sensor baseline, sensitivity, and noise rejection - reduces calibration effort |
Applications
| Smart Wearables | Industrial Control Panels |
|---|---|
|
Use Scenario: Touch-sensitive earbud case lid detection and gesture control under sweat/water exposure. IC Role / Device Role / Timing Role: Primary HMI controller performing simultaneous capacitive lid open/close detection and inductive proximity wake-up. Use Value: 6 µA deep sleep current extends 200 mAh battery life to >18 months; liquid-tolerant sensing avoids false triggers during condensation. |
Use Scenario: Operator interface on sealed IP66-rated HVAC control panel with metal overlay and glove operation. IC Role / Device Role / Timing Role: Dual-mode HMI processor handling mutual-capacitance touch through stainless steel and inductive metal proximity for safety interlock. Use Value: 13.5-bit ENOB resolution ensures reliable detection through 2 mm metal; spread-spectrum excitation rejects EMI from nearby motors. |
| Smart Home Appliances | Medical Patient Monitors |
|
Use Scenario: Waterproof touch controls on induction cooktop surface with boil-over tolerance. IC Role / Device Role / Timing Role: CAPSENSE™ subsystem managing 12 self-capacitive buttons and 4 mutual-capacitive sliders while rejecting water film interference. Use Value: Ratio-metric MSCLP architecture achieves >5:1 SNR in wet conditions; automatic recalibration maintains accuracy across temperature drift. |
Use Scenario: Low-power patient-worn patch monitoring respiration rate via chest motion sensing. IC Role / Device Role / Timing Role: Ultra-low-power sensor hub acquiring analog bio-signals, running CAPSENSE™ proximity wake, and transmitting via BLE SoC companion. Use Value: 200 µA average active current enables continuous 7-day monitoring on CR2032; Class-B library simplifies FDA 510(k) software validation. |
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-S402 | Same die, 48 MHz IMO trimmed to ±1% (vs ±2%), 32 KB flash/4 KB SRAM, identical WLCSP-25 package | Targeted at precision timing-critical HMI where tighter oscillator tolerance improves touch response consistency | Select when system-level timing jitter must be minimized in synchronous multi-device touch networks |
| CY8C4014LQI-S412 | Legacy PSoC™ 4000S variant: 24 MHz CPU, 16 KB flash/2 KB SRAM, no inductive sensing, same WLCSP-25 | Cost-optimized entry-level touch MCU for basic button/slider UIs without liquid tolerance or proximity requirements | Choose only if design does not require multi-sense capability, deep sleep <10 µA, or >32 KB code space |
Compared with CY8C4025LQI-S402, this part trades ±1% oscillator accuracy for broader voltage tolerance and lower cost; versus CY8C4014LQI-S412, it delivers 2× CPU performance, 2× memory, and adds inductive sensing - critical for next-gen ruggedized HMI.
Availability
CY8C4025LQI-T412 is available at Aetrix Electronics and suitable for smart wearables, industrial HMI panels, and medical patient monitors requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4025LQI-T412 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.
CY8C4025LQI-T412 belongs to the PSoC™ 4000T product line, engineered specifically to deliver ultra-low-power, liquid-tolerant human-machine interface solutions for space-constrained, battery-operated edge devices.
FAQ
Does CY8C4025LQI-T412 support in-system programming via I²C bootloader?
Yes. The device ships with a factory-installed I²C bootloader configured for address 0x0C, 400 kbps data rate, and default SCL/SDA on P2.2/P2.3. It occupies the bottom 12.5 KB of flash (0x00000000–0x00003200) and supports single-application loading starting at 0x00003200. External 4.7 kΩ pull-up resistors are required on both lines.
What is the maximum number of electrodes supported in mutual-capacitance mode?
CY8C4025LQI-T412 supports up to 16 electrodes in self-capacitance mode and up to 8 electrodes (4 transmit + 4 receive) in mutual-capacitance configuration. This enables 4×4 touch matrix implementation for sliders, wheels, or multi-button arrays with hardware-accelerated scan and noise filtering.
Can the inductive sensing channels operate simultaneously with capacitive sensing?
Yes. The multi-sense converter (MSCLP) executes capacitive and inductive sensing sequences autonomously in parallel, using separate hardware resources. Inductive excitation (40 kHz–5.7 MHz) and capacitive measurement occur concurrently without CPU intervention or timing conflict, verified in AN239751.
Is SWD debug functionality permanently enabled on CY8C4025LQI-T412?
No. SWD is enabled by default at power-on but can be disabled in firmware via the Debug Select register. Once disabled, re-enabling requires full chip erase (if not flash-protected), clearing protection bits, and reprogramming with debug-enabled firmware - providing secure debug lockdown for production units.
CY8C4025LQI-T412 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 24-UFQFN Exposed Pad
- 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:
- 19
- 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-T412 FAQ
1.How can I place an order for CY8C4025LQI-T412 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4025LQI-T412 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-T412 reliable?
The price and inventory of CY8C4025LQI-T412 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4025LQI-T412 is usually 5 days.
3.What payment methods are accepted for CY8C4025LQI-T412?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4025LQI-T412 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4025LQI-T412?
CY8C4025LQI-T412 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4025LQI-T412 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-T412?
For technical support, including CY8C4025LQI-T412 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4025LQI-T412 requirements.
6.How does Aetrix verify that CY8C4025LQI-T412 is sourced from the original manufacturer or authorized distributors?
All CY8C4025LQI-T412 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-T412 meets industry standards.
7.What is the process for return or replacement of CY8C4025LQI-T412?
All CY8C4025LQI-T412 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4025LQI-T412, 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-T412 part is unused and in its original packaging.
Return procedure for CY8C4025LQI-T412:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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