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Infineon Technologies CY8C4146FNI-S423T
- Part No.:
- CY8C4146FNI-S423T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 35-XFBGA, WLCSP
- Datasheet:
-
CY8C4146FNI-S423T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 35WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,778
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Product details
Overview
CY8C4146FNI-S423T from Infineon is a programmable 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 64 KB flash, 8 KB SRAM, integrated CAPSENSE™ capacitive sensing, and reconfigurable analog/digital blocks. It supports 1-Msps 12-bit SAR ADC, two opamps, two low-power comparators, three SCBs (I²C/SPI/UART), five TCPWM blocks, and up to 36 GPIOs in a 48-pin TQFP package - deployed in industrial HMI touch panels, smart appliance control interfaces, and battery-powered IoT sensor nodes.
For engineers reviewing the CY8C4146FNI-S423T datasheet, CY8C4146FNI-S423T pinout, CY8C4146FNI-S423T application, or CY8C4146FNI-S423T equivalent, key selection criteria include deep-sleep current (2.5 µA), CAPSENSE™ SNR (>5:1), programmable drive strength per GPIO, and hardware-accelerated SmartSense auto-tuning for wet-environment touch reliability.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with configurable analog peripherals including continuous-time opamps supporting high-drive external and high-bandwidth internal modes, plus a dedicated capacitance-sensing delta-sigma block delivering >5:1 SNR. Its digital subsystem includes five TCPWM blocks with quadrature decoding and comparator-triggered kill signals for motor safety logic.
Three reconfigurable Serial Communication Blocks (SCBs) support runtime switching between I²C, SPI, and UART protocols without firmware reload. Clocking combines ±2% IMO, 32 kHz WCO, and 32 kHz ILO - enabling precise timing across active, sleep, and deep-sleep modes while maintaining analog functionality at 2.5 µA system current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz - single-cycle multiply enables real-time control loops without software overhead. |
| Memory | 64 KB flash + 8 KB SRAM - sufficient for embedded GUI stacks, sensor fusion, and CAPSENSE™ firmware with over-the-air update headroom. |
| ADC | 12-bit SAR @ 1 Msps with sequencer & averaging - supports multi-channel analog monitoring (e.g., temperature, voltage, current) with noise rejection. |
| CAPSENSE™ | Sigma-delta CSD with >5:1 SNR and SmartSense auto-tuning - delivers reliable touch detection under water or condensation without manual calibration. |
| Low-Power Mode | Deep Sleep @ 2.5 µA with operational analog - maintains touch wake-up capability and RTC while preserving battery life in portable devices. |
| GPIO | Up to 36 pins with programmable drive strength, slew rate, and analog/digital/CAPSENSE™ assignment - eliminates external level shifters or signal conditioning ICs. |
| Communication | 3 × SCBs supporting I²C/SPI/UART concurrently - enables simultaneous sensor bus, display interface, and debug channel without resource conflict. |
Pinout & Package
Package: 48-lead TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers all digital logic, analog blocks, and GPIOs - supports direct connection to Li-ion or USB 5 V rails. |
| VSS | Digital ground | Primary reference for digital I/O and CPU subsystem - must be low-impedance and separated from analog ground where precision sensing is required. |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, analog input/output, or digital functions; each pin configurable for drive strength (2–8 mA) and slew rate (fast/slow). |
| P1[0]–P1[7] | Programmable GPIO | Same capabilities as P0; P1[2]/P1[3] support SWD debug interface - enables in-circuit programming and real-time trace without dedicated debug header. |
| XRES | Active-low reset | Asynchronous reset input; internal pull-up ensures reliable power-on initialization without external RC network. |
| WCO_IN / WCO_OUT | 32.768 kHz crystal interface | Connects to external watch crystal for accurate RTC and low-power timer operation - essential for time-stamped CAPSENSE™ events. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable analog blocks | Two opamps operate in Deep Sleep mode with selectable drive modes - enables always-on sensor front-end without waking CPU. |
| Hardware CAPSENSE™ engine | Dedicated sigma-delta modulator with automatic SmartSense tuning - reduces firmware development time by >70% vs. software-based touch algorithms. |
| Programmable digital logic | PLD-style logic blocks perform Boolean operations on port signals - implements custom glue logic (e.g., interrupt arbitration, status encoding) without CPU intervention. |
| Flexible clock system | IMO (±2%), WCO, and ILO sources with dynamic switching - allows precise timing for communication (I²C/SPI) while minimizing jitter in PWM motor control. |
| LCD segment drive | Direct GPIO-based LCD segment output - drives up to 32 segments without external driver IC, reducing BOM count in small displays. |
Applications
| Industrial HMI Panels | Smart Appliance Interfaces |
|---|---|
|
Use Scenario: Touch-enabled operator interface on PLC-mounted control panels exposed to dust, oil, and occasional moisture. IC Role / Device Role / Timing Role: Primary MCU handling CAPSENSE™ button detection, serial communication with PLC backplane, and local LED/LCD feedback. Use Value: >5:1 SNR and SmartSense auto-tuning maintain touch accuracy despite surface contaminants - eliminating false triggers and field service calls. |
Use Scenario: User interface for washing machine control board requiring waterproof touch keys and real-time motor PWM control. IC Role / Device Role / Timing Role: System-on-chip managing CAPSENSE™, five TCPWM blocks for motor phase control, and I²C temperature/humidity sensor interface. Use Value: Integrated opamps and comparators enable analog signal conditioning for motor current sensing - removing need for external amplifiers and saving PCB area. |
| Battery-Powered IoT Sensors | Medical Device Keypads |
|
Use Scenario: Wireless environmental monitor with capacitive buttons, ambient light/temperature sensing, and BLE connectivity. IC Role / Device Role / Timing Role: Low-power MCU executing CAPSENSE™ wake-up, SAR ADC acquisition, and data preprocessing before BLE transmission. Use Value: 2.5 µA Deep Sleep current with active analog allows sub-10 µA average system current - extending coin-cell battery life to >2 years. |
Use Scenario: Touch keypad on infusion pump requiring fail-safe button response, ESD immunity, and regulatory-compliant design. IC Role / Device Role / Timing Role: Safety-critical controller validating CAPSENSE™ inputs against debounce thresholds and triggering hardware kill signals via TCPWM comparators. Use Value: Comparator-based TCPWM kill signal generation provides <100 ns response latency - meeting IEC 62304 Class C timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4147FNI-S433 | Same architecture with 128 KB flash, 16 KB SRAM, and identical peripheral set - no change in pinout or package. | Required when firmware exceeds 64 KB or requires larger RAM buffers for audio processing or extended sensor fusion. | Select for future-proofing firmware growth or adding ModusToolbox™ middleware components like Bluetooth LE stack. |
| STM32G071KBT6 | Arm® Cortex®-M0+, 64 KB flash, 36 KB SRAM, but lacks integrated CAPSENSE™ and programmable analog blocks - requires external touch controller and opamp ICs. | Suitable for cost-sensitive designs where touch is implemented via resistive overlay or external IC, and analog signal chain is simple. | Choose only if CAPSENSE™ is not needed and BOM simplification via external analog components is acceptable. |
Compared with CY8C4146FNI-S423T, CY8C4147FNI-S433 offers scalable memory without hardware redesign, while STM32G071KBT6 trades integrated analog flexibility for lower unit cost and higher SRAM - making it viable only when CAPSENSE™ and opamp integration are unnecessary.
Availability
CY8C4146FNI-S423T is available at Aetrix Electronics and suitable for industrial HMI panels, smart appliance interfaces, and battery-powered IoT sensor nodes requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for CY8C4146FNI-S423T 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 secure connectivity solutions - with global R&D centers and ISO/TS 16949-certified manufacturing.
CY8C41xx belongs to the PSoC™ 4100S product line - designed specifically for cost-effective, low-power embedded systems requiring integrated capacitive touch, programmable analog, and flexible digital logic in a single chip.
FAQ
Does CY8C4146FNI-S423T support USB device functionality?
No. The CY8C4146FNI-S423T does not include a USB PHY or USB controller. It supports only I²C, SPI, and UART through its three Serial Communication Blocks (SCBs). For USB connectivity, an external USB-to-UART bridge IC or migration to a PSoC™ 4 family member with USBFS (e.g., CY8C4247LQI-BL483) is required.
What is the maximum operating temperature for this device?
The CY8C4146FNI-S423T is rated for industrial temperature range: –40 °C to +85 °C. This specification is validated per Infineon's datasheet (002-00122 Rev. *Q, Section 5.2), and applies across all operating modes including Deep Sleep and full-speed CPU execution at 48 MHz.
Can the internal opamps drive a 50 Ω load directly?
No. The continuous-time opamps (CTB) are specified for 100 Ω minimum load impedance in high-drive mode (datasheet Section 5.3.1). Driving a 50 Ω load would cause gain error and thermal stress beyond safe operating limits - an external buffer amplifier is required for such low-impedance interfacing.
Is SmartSense auto-tuning supported in PSoC™ Creator and ModusToolbox™?
Yes. SmartSense auto-tuning is fully supported in both PSoC™ Creator (v4.4+) and ModusToolbox™ (v3.1+). It is implemented as a runtime firmware library that dynamically adjusts CAPSENSE™ parameters (IDAC, resolution, scan speed) based on environmental changes - no manual recalibration is needed after initial setup.
CY8C4146FNI-S423T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 35-XFBGA, WLCSP
- Series:
- PSOC™ 4 CY8C4100S
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, POR, PWM, WDT
- Number of I/O:
- 31
- 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:
- A/D 16x10b Slope, 16x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4146FNI-S423T FAQ
1.How can I place an order for CY8C4146FNI-S423T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146FNI-S423T 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 CY8C4146FNI-S423T reliable?
The price and inventory of CY8C4146FNI-S423T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146FNI-S423T is usually 5 days.
3.What payment methods are accepted for CY8C4146FNI-S423T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146FNI-S423T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146FNI-S423T?
CY8C4146FNI-S423T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146FNI-S423T 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 CY8C4146FNI-S423T?
For technical support, including CY8C4146FNI-S423T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146FNI-S423T requirements.
6.How does Aetrix verify that CY8C4146FNI-S423T is sourced from the original manufacturer or authorized distributors?
All CY8C4146FNI-S423T 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 CY8C4146FNI-S423T meets industry standards.
7.What is the process for return or replacement of CY8C4146FNI-S423T?
All CY8C4146FNI-S423T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146FNI-S423T, 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 CY8C4146FNI-S423T part is unused and in its original packaging.
Return procedure for CY8C4146FNI-S423T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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