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Infineon Technologies CY8C4046FNI-T412T
- Part No.:
- CY8C4046FNI-T412T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 25-XFBGA, WLCSP
- Datasheet:
-
CY8C4046FNI-T412T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 25XFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,770
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Product details
Overview
CY8C4046FNI-T412T from Infineon is a 32-bit Arm® Cortex®-M0+ microcontroller with fifth-generation CAPSENSE™ and multi-sense HMI technology, operating at 48 MHz, featuring 64 KB flash, 8 KB SRAM, and ultra-low-power Deep Sleep mode (6 µA) with hardware-accelerated "Always-on" touch sensing - deployed in wearables, hearables, and liquid-tolerant IoT user interfaces.
For engineers reviewing the CY8C4046FNI-T412T datasheet, CY8C4046FNI-T412T pinout, CY8C4046FNI-T412T application, or CY8C4046FNI-T412T equivalent, this device delivers verified multi-sense converter support (capacitive + inductive), 21 GPIOs, dual reconfigurable SCBs (I²C/SPI/UART), and Class-B firmware library compliance for safety-critical HMI designs.
Technical Context
The CY8C4046FNI-T412T integrates an Arm® Cortex®-M0+ CPU with single-cycle multiply and a dedicated multi-sense converter (MSCLP) supporting ratio-metric capacitive and flyback inductive sensing - enabling autonomous channel scanning without CPU intervention. It features two independent serial communication blocks (SCBs) with runtime-reconfigurable I²C/SPI/UART modes and master/slave I²C capability in one block.
Its timing subsystem includes two 16-bit TCPWM blocks with quadrature decode, center-aligned PWM, and comparator-triggered kill signals. Clock sources comprise a ±2% 48-MHz IMO and a 40-kHz ILO, while power management supports 1.71–5.5 V operation with Deep Sleep current of 6 µA and active touch detection at 200 µA average.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz with single-cycle multiply - enables real-time sensor fusion and deterministic HMI response. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - sufficient for CAPSENSE™ middleware, DFU stack, and application logic. |
| Power Consumption | 6 µA Deep Sleep with hardware wake-on-touch - enables years of battery life in coin-cell-powered wearables. |
| Sensing Capability | Fifth-gen CAPSENSE™ with MSCLP: >5:1 SNR, 13.5-bit ENOB, <100 aF noise floor - ensures reliable touch under water, gloves, or contaminants. |
| Inductive Sensing | Up to 6 inductive sensors (100 nH–200 µH range, 40 kHz–5.7 MHz excitation) - supports metal proximity, liquid-level, and hover detection. |
| GPIO & Peripherals | 21 programmable GPIOs; dual SCBs (I²C/SPI/UART); two 16-bit TCPWM blocks - supports mixed-signal HMI + system control in single chip. |
Pinout & Package
Package: 25-pin WLCSP (0.35 mm pitch), ball-grid layout with 0.25 mm ball diameter and 0.35 mm pitch - optimized for space-constrained wearable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | Accepts 1.71–5.5 V; powers digital logic, analog sensing blocks, and GPIOs. |
| VSS | Digital ground | Reference return for digital circuitry and SCB peripherals. |
| P0.0–P0.7 | Programmable GPIO / CAPSENSE™ electrode | Support self/mutual capacitance sensing; configurable as digital I/O or analog input. |
| P2.2 / P2.3 | I²C SCL / SDA (bootloader default) | Hardwired to factory-installed I²C bootloader (address 0x0C, 400 kbps). |
| SWDIO / SWCLK | Serial Wire Debug interface | Enables full on-chip debug, flash programming, and trace without external pods. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous Multi-Sense Converter (MSCLP) | Hardware-accelerated capacitive + inductive sensing with CPU-independent scanning - reduces active time and extends battery life. |
| Class-B Firmware Library Support | Pre-certified software modules for IEC 61508 SIL-2 and UL 60730 compliance - accelerates functional safety certification. |
| Smart Sensing Algorithm | Automatic hardware tuning of sensor parameters (frequency, resolution, filters) - eliminates manual calibration during production. |
| Reconfigurable Serial Blocks (SCBs) | Two runtime-switchable blocks supporting I²C master/slave, SPI master/slave, or UART - simplifies interface consolidation and BOM reduction. |
| Ultra-Low-Power Deep Sleep | 6 µA with always-on touch detection and hardware wake - enables true "instant-on" UI without compromising standby duration. |
Applications
| Wearable Fitness Tracker | Smart Earbud Touch Panel |
|---|---|
Use Scenario: Capacitive touch controls on curved, sweat-prone earbud housing requiring reliable actuation through moisture and skin oils. IC Role / Device Role / Timing Role: Primary HMI controller executing CAPSENSE™ firmware, managing Bluetooth HCI interface via SCB, and maintaining low-power state transitions. Use Value: 6 µA Deep Sleep + hardware wake enables >1-year battery life; liquid tolerance prevents false triggers during exercise. |
Use Scenario: Tap-and-hold gesture recognition on compact earbud stem with no exposed buttons or mechanical switches. IC Role / Device Role / Timing Role: Dedicated touch MCU handling mutual-capacitance electrode array, filtering noise from RF interference, and communicating results over I²C to main SoC. Use Value: 13.5-bit ENOB and <100 aF noise floor ensure sub-millisecond gesture latency and immunity to RF coupling from adjacent Bluetooth radio. |
| Liquid-Level Sensor Module | Industrial Control Panel |
Use Scenario: Non-contact liquid height measurement in sealed stainless-steel tanks using inductive sensing coils mounted externally. IC Role / Device Role / Timing Role: Inductive sensing controller driving flyback excitation (40 kHz–5.7 MHz), digitizing coil impedance shifts, and outputting calibrated level data via UART. Use Value: Wide inductance range (100 nH–200 µH) and spread-spectrum clocking enable stable operation across temperature and fill-level variations. |
Use Scenario: Ruggedized HMI panel in factory automation equipment requiring ESD-hardened touch response and fail-safe operation under oil mist and vibration. IC Role / Device Role / Timing Role: Safety-certified HMI processor running Class-B firmware, monitoring emergency stop inputs, and driving status LEDs via TCPWM. Use Value: Built-in hardware filters and CAPSENSE™ Class-B library reduce validation effort for UL 60730 compliance in industrial environments. |
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 |
|---|---|---|---|
| CY8C4045FNI-T412 | Same die, 32 KB flash / 4 KB SRAM - lacks bootloader region and DFU-ready configuration. | Not suitable for field-upgradable devices requiring secure OTA updates. | Select only for cost-sensitive, fixed-function designs without firmware update requirements. |
| STM32G031K8T6 | No integrated CAPSENSE™ or inductive sensing; requires external ADC, op-amps, and custom firmware for comparable HMI performance. | Higher BOM count and longer development cycle for touch functionality. | Choose only when leveraging existing STM32 ecosystem and accepting added design complexity for sensing. |
Compared with CY8C4045FNI-T412 and STM32G031K8T6, the CY8C4046FNI-T412T uniquely integrates certified multi-sense hardware, factory bootloader, and Class-B firmware - reducing time-to-certification and eliminating external sensing components.
Availability
CY8C4046FNI-T412T is available at Aetrix Electronics and suitable for wearable electronics, hearable devices, and industrial HMI panels requiring stable component supply, long-lifecycle availability, and qualified low-power sensing performance.
Supply support for CY8C4046FNI-T412T 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, and embedded security solutions, with global manufacturing and R&D infrastructure.
This device belongs to the PSoC™ 4000T product line - engineered specifically for ultra-low-power human-machine interface applications demanding integrated capacitive and inductive sensing, safety certification readiness, and minimal external component count.
FAQ
Does CY8C4046FNI-T412T support JTAG debugging?
No - it uses Arm® Serial Wire Debug (SWD) exclusively. The SWDIO and SWCLK pins provide full programming, debug, and trace capability compatible with industry-standard tools like Segger J-Link and OpenOCD. JTAG is not implemented on this silicon revision.
What is the factory bootloader's default I²C address and memory footprint?
The factory-installed I²C bootloader occupies 12.5 KB (0x00000000–0x00003200), operates at 400 kbps, and uses slave address 0x0C on P2.2 (SDA) and P2.3 (SCL). It supports single-application loading starting at 0x00003200, with 256 bytes reserved for metadata.
Can the multi-sense converter operate simultaneously for capacitive and inductive sensing?
No - the MSCLP hardware shares resources between sensing domains. Capacitive and inductive channels must be scanned sequentially under firmware control, though both can be scheduled within the same low-power cycle using autonomous scanning triggers.
Is the WLCSP package solderable with standard reflow profiles?
Yes - the 25-pin WLCSP (0.35 mm pitch) is qualified for IPC/JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260°C. Board design must follow Infineon's recommended pad layout (0.25 mm ball diameter, NSMD pads) and stencil aperture guidelines to ensure void-free solder joints.
CY8C4046FNI-T412T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 25-XFBGA, WLCSP
- Series:
- PSOC™ 4 CY8C4000S
- Packaging:
- Tape & Reel (TR)
- 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:
- 21
- 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:
CY8C4046FNI-T412T FAQ
1.How can I place an order for CY8C4046FNI-T412T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4046FNI-T412T 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 CY8C4046FNI-T412T reliable?
The price and inventory of CY8C4046FNI-T412T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4046FNI-T412T is usually 5 days.
3.What payment methods are accepted for CY8C4046FNI-T412T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4046FNI-T412T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4046FNI-T412T?
CY8C4046FNI-T412T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4046FNI-T412T 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 CY8C4046FNI-T412T?
For technical support, including CY8C4046FNI-T412T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4046FNI-T412T requirements.
6.How does Aetrix verify that CY8C4046FNI-T412T is sourced from the original manufacturer or authorized distributors?
All CY8C4046FNI-T412T 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 CY8C4046FNI-T412T meets industry standards.
7.What is the process for return or replacement of CY8C4046FNI-T412T?
All CY8C4046FNI-T412T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4046FNI-T412T, 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 CY8C4046FNI-T412T part is unused and in its original packaging.
Return procedure for CY8C4046FNI-T412T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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