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Infineon Technologies CY8C4046LQI-T411
- Part No.:
- CY8C4046LQI-T411
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 16-UFQFN
- Datasheet:
-
CY8C4046LQI-T411.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 16UFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:967
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Product details
Overview
CY8C4046LQI-T411 from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with fifth-generation CAPSENSE™ and multi-sense HMI technology, operating from 1.71 V to 5.5 V, featuring 48 MHz CPU speed, 64 KB flash, 8 KB SRAM, and hardware-accelerated capacitive/inductive sensing for ultra-low-power touch interfaces in wearables and IoT edge devices.
For engineers reviewing the CY8C4046LQI-T411 datasheet, CY8C4046LQI-T411 pinout, CY8C4046LQI-T411 application, or CY8C4046LQI-T411 equivalent, key selection criteria include deep-sleep current (6 µA), ENOB (13.5-bit), SNR (>5:1), liquid-tolerant sensing architecture, and dual SCB serial interface reconfigurability for I²C/SPI/UART.
Technical Context
The CY8C4046LQI-T411 integrates an Arm® Cortex®-M0+ core with dedicated hardware blocks for ratio-metric capacitive sensing and flyback inductive sensing - both autonomous from CPU execution. Its MSCLP (Multi-Sense Converter Low-Power) subsystem enables simultaneous self/mutual-capacitance scanning and inductive channel excitation across 40 kHz–5.7 MHz.
It supports two runtime-reconfigurable Serial Communication Blocks (SCBs), each independently assignable as I²C master/slave, SPI master/slave, or UART; plus two 16-bit TCPWM modules with quadrature decode, center-aligned PWM, and comparator-triggered kill signals for motor or power control timing integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - delivers deterministic real-time response for HMI event handling without OS overhead. |
| Flash / SRAM | 64 KB flash with read accelerator / 8 KB SRAM - sufficient for CAPSENSE™ middleware + application logic in compact wearable firmware images. |
| Deep Sleep Current | 6 µA with "Always-on" touch detection - enables battery-powered devices to sustain multi-week operation on coin cells. |
| CAPSENSE™ ENOB | 13.5-bit effective resolution - ensures high-fidelity proximity and hover detection even under noisy EMI conditions. |
| Inductive Sensing Range | 100 nH to 200 µH sensor inductance - supports robust metal-detection and liquid-level sensing across diverse mechanical form factors. |
| GPIO Count | 21 programmable pins - includes dedicated CAPSENSE™ analog routing, SCB signal assignment, and TCPWM capture/compare functions. |
| Operating Voltage | 1.71 V to 5.5 V - allows direct interfacing with Li-ion, coin-cell, or 3.3/5 V system rails without external regulators. |
Pinout & Package
Package: 24-pin QFN (4 mm × 4 mm, 0.5 mm pitch), thermally enhanced with exposed pad for low-impedance ground path and thermal dissipation in space-constrained HMI modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | Accepts 1.71–5.5 V; powers digital core, analog sensing blocks, and GPIO drivers. |
| GND | Digital/analog ground reference | Shared return path; requires low-inductance connection to exposed thermal pad for noise immunity. |
| P0.0–P0.7 | Programmable GPIO / CAPSENSE™ electrode | Support mutual/self-capacitance sensing; configurable as analog input or digital I/O with slew-rate control. |
| P1.0–P1.7 | Programmable GPIO / SCB/TCPWM signal | Assignable to I²C SDA/SCL, SPI MOSI/MISO, UART TX/RX, or TCPWM capture/trigger inputs. |
| P2.0–P2.7 | Programmable GPIO / Inductive sensing driver | Drive flyback inductive coils; support spread-spectrum excitation and hardware-based demodulation. |
| SWDCLK / SWDIO | Arm® Serial Wire Debug interface | Enable full-chip programming, real-time debugging, and trace without additional debug probes. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous CAPSENSE™ scanning | Hardware-accelerated electrode scanning during Deep Sleep - eliminates CPU wakeups, preserving 6 µA standby current. |
| MSCLP multi-sense converter | Single hardware block supporting both capacitive and inductive sensing - reduces BOM count and PCB area vs. dual-sensor SoCs. |
| Smart sensing algorithm | On-the-fly automatic tuning of sensor baseline and thresholds - eliminates manual calibration in production line testing. |
| Class-B firmware library | Pre-certified functional safety routines for IEC 61508 SIL-2 - accelerates compliance for industrial HMI applications. |
| Reconfigurable SCBs | Two independent serial blocks, each dynamically switchable between I²C/SPI/UART - simplifies interface adaptation across sensor hub, display, and host MCU links. |
Applications
| Wearable Touch Controls | Smart Home Liquid-Level Sensors |
|---|---|
Use Scenario: Buttonless wristband with gesture-enabled navigation and water-resistant surface. IC Role / Device Role / Timing Role: Primary MCU and CAPSENSE™ controller - executes touch firmware, manages BLE connectivity, and performs real-time proximity/hover detection. Use Value: 6 µA Deep Sleep + hardware wake-on-touch enables >30-day battery life; 13.5-bit ENOB ensures reliable detection through silicone casing and sweat. | Use Scenario: Contactless water tank level monitoring in humid basements or outdoor enclosures. IC Role / Device Role / Timing Role: Inductive sensing front-end and system controller - drives coil excitation, digitizes return signal, and transmits level data via UART to gateway MCU. Use Value: Flyback inductive sensing tolerates condensation and conductive contaminants; wide 100 nH–200 µH range accommodates custom coil geometries. |
| Industrial Control Panel | Hearable Proximity Interface |
Use Scenario: Dust- and splash-resistant HMI panel for factory equipment with glove-operable controls. IC Role / Device Role / Timing Role: Dedicated HMI processor - handles multi-electrode button grid, LED feedback PWM, and isolated CAN/I²C communication to PLC. Use Value: Liquid tolerance and >5:1 SNR prevent false triggers from coolant splashes; TCPWM quadrature decode supports rotary encoder integration. | Use Scenario: True wireless earbud with ear-detection and tap-to-control using minimal internal volume. IC Role / Device Role / Timing Role: Ultra-low-power sensing co-processor - runs CAPSENSE™ firmware autonomously while main audio SoC remains asleep. Use Value: Self-capacitance sensing with <100 aF noise floor detects subtle ear insertion; ILO-driven timing ensures consistent 40 kHz sampling without crystal load. |
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 |
|---|---|---|---|
| CY8C4045LQI-S412 | Same package and CAPSENSE™ IP, but 32 KB flash / 4 KB SRAM and no inductive sensing support. | Limited to pure capacitive-only designs; insufficient memory for complex hover/gesture algorithms. | Select when cost-sensitive, single-modality (capacitive-only) HMI is sufficient and firmware footprint <24 KB. |
| STM32G031K8T6 | No integrated CAPSENSE™; requires external touch controller IC and additional firmware stack for equivalent sensing performance. | Higher BOM count, larger PCB area, and longer development cycle for certified touch functionality. | Select only if existing STM32 toolchain familiarity outweighs CAPSENSE™ time-to-market advantage and total system cost. |
Compared with CY8C4045LQI-S412 and STM32G031K8T6, the CY8C4046LQI-T411 uniquely delivers integrated multi-sense capability, hardware-accelerated ultra-low-power scanning, and Class-B-ready firmware - reducing design risk, certification effort, and component count in next-gen wearables and industrial HMIs.
Availability
CY8C4046LQI-T411 is available at Aetrix Electronics and suitable for wearable user interfaces, smart home liquid-level sensors, industrial control panels, and hearable proximity interfaces requiring stable component supply and long-term lifecycle assurance.
Supply support for CY8C4046LQI-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 is a German semiconductor manufacturer specializing in power management, automotive MCUs, and human-machine interface solutions, with global R&D centers and ISO/TS 16949-certified manufacturing.
The PSoC™ 4000T product line targets ultra-low-power, multi-modal HMI applications - integrating capacitive, inductive, and proximity sensing into a single Arm®-based MCU to replace discrete sensor + controller architectures in wearables and IoT edge nodes.
FAQ
Does CY8C4046LQI-T411 support hardware-based wake-from-Deep-Sleep on touch detection?
Yes. The device implements dedicated CAPSENSE™ hardware that scans electrodes autonomously in Deep Sleep mode and asserts a wake signal upon threshold-crossing - enabling full-system wake without CPU intervention. This feature is enabled by default and requires no firmware polling, maintaining the specified 6 µA quiescent current.
What is the maximum number of inductive sensors supported, and how are they configured?
The CY8C4046LQI-T411 supports up to six inductive sensor pairs using its MSCLP subsystem. Each pair uses two GPIO pins (driver + sense) and is excited via flyback topology with programmable frequency (40 kHz–5.7 MHz), spread spectrum, and linear output characteristics - all controlled by dedicated hardware registers, not CPU loops.
Can the two SCBs operate simultaneously as different protocols - e.g., one as I²C master and the other as SPI slave?
Yes. Each SCB is fully independent and can be configured at runtime via register writes: SCB0 may run as I²C master communicating with a sensor, while SCB1 operates as SPI slave serving a display controller. No shared resources or arbitration conflicts occur, and configuration changes take effect within one clock cycle.
Is the WLCSP bootloader compatible with CY8C4046LQI-T411's QFN package?
No. The WLCSP bootloader package referenced in the datasheet applies only to WLCSP variants (e.g., CY8C4046LZI-T411). The CY8C4046LQI-T411 uses a 24-pin QFN package and ships with factory-programmed bootloaders supporting I²C (address 0x0C) or SWD/JTAG - both accessible via standard ModusToolbox™ DFU tools without hardware modification.
CY8C4046LQI-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:
- 48MHz
- Connectivity:
- I2C, Microwire, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, POR, PWM, WDT
- Number of I/O:
- 11
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K 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:
CY8C4046LQI-T411 FAQ
1.How can I place an order for CY8C4046LQI-T411 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4046LQI-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 CY8C4046LQI-T411 reliable?
The price and inventory of CY8C4046LQI-T411 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4046LQI-T411 is usually 5 days.
3.What payment methods are accepted for CY8C4046LQI-T411?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4046LQI-T411 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4046LQI-T411?
CY8C4046LQI-T411 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4046LQI-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 CY8C4046LQI-T411?
For technical support, including CY8C4046LQI-T411 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4046LQI-T411 requirements.
6.How does Aetrix verify that CY8C4046LQI-T411 is sourced from the original manufacturer or authorized distributors?
All CY8C4046LQI-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 CY8C4046LQI-T411 meets industry standards.
7.What is the process for return or replacement of CY8C4046LQI-T411?
All CY8C4046LQI-T411 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4046LQI-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 CY8C4046LQI-T411 part is unused and in its original packaging.
Return procedure for CY8C4046LQI-T411:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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