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Infineon Technologies CY8C4145FNI-PS423T
- Part No.:
- CY8C4145FNI-PS423T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 45-XFBGA, WLCSP
- Datasheet:
-
CY8C4145FNI-PS423T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 45WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,914
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Product details
Overview
CY8C4145FNI-PS423T from Infineon is a PSoC™ 4100PS programmable system-on-chip based on Arm® Cortex®-M0+ CPU (48 MHz), featuring 32 KB flash, 4 KB SRAM, dual ADCs (12-bit SAR + 10-bit single-slope), CAPSENSE™ CSD capacitive sensing, and 38 GPIOs in 48-pin QFN package - used in human-interface embedded systems requiring integrated analog front-end and low-power touch control.
For engineers reviewing the CY8C4145FNI-PS423T datasheet, CY8C4145FNI-PS423T pinout, CY8C4145FNI-PS423T application, or CY8C4145FNI-PS423T equivalent, key selection criteria include SAR ADC resolution, CAPSENSE™ SNR performance, Deep-Sleep current (2.5 µA), SCB configurability (I²C/SPI/UART), and Smart I/O Boolean logic capability.
Technical Context
The device integrates a 32-bit Arm® Cortex®-M0+ core with descriptor-based 8-channel DMA and flash read accelerator for deterministic real-time execution. Its analog subsystem includes two independent CTB opamps, 13-bit VDACs, 7-bit IDACs, and a dedicated sigma-delta CAPSENSE™ block supporting up to 38 self- or mutual-capacitance sensors.
Digital resources comprise three run-time reconfigurable Serial Communication Blocks (SCBs), eight 16-bit TCPWM units with center-aligned/PWM modes, and eight Smart I/Os enabling pin-level combinational logic without CPU intervention - all routed via automatic digital/analog interconnect fabric.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz - enables deterministic real-time firmware execution with Thumb-2 instruction set support |
| Flash / SRAM | 32 KB flash with read accelerator + 4 KB SRAM - supports firmware storage, bootloader, and runtime data buffers |
| Analog-to-Digital | 12-bit SAR ADC (1 Msps) + 10-bit single-slope ADC - provides high-speed precision sensing and low-power background conversion |
| CAPSENSE™ | Sigma-Delta (CSD) architecture with SmartSense™ auto-tuning - delivers >100 dB SNR and robust water-tolerant touch detection |
| Power Modes | Deep-Sleep mode draws 2.5 µA digital + operational analog - sustains capacitive sensing and RTC during battery-powered standby |
| GPIO Count | 38 programmable pins with configurable drive strength, slew rate, and analog/digital/CAPSENSE™/LCD roles - enables flexible board-level signal routing |
| SCB Peripherals | 3 × run-time configurable Serial Communication Blocks - each supports I²C master/slave, SPI master/slave, or UART operation via firmware register setup |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad (EPAD) connected to VSS for PCB heat dissipation and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDD | Power supply inputs | VDDA powers analog blocks; VDDD powers digital logic; both require local 100 nF decoupling per supply rail |
| VSS, VSSA, VSSD | Ground returns | VSSA isolates analog ground from digital return paths to minimize noise coupling into ADC/CAPSENSE™ |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7], P4[0]–P4[7] | Programmable GPIO banks | Each pin supports analog input/output, digital I/O, CAPSENSE™ electrode, or LCD segment/common - configured at runtime via PSoC™ Creator |
| XRES | External reset input | Active-low asynchronous reset with internal pull-up; accepts 1.71–5.5 V logic levels; debounced by internal circuitry |
| SWDCK / SWDIO | ARM SWD debug interface | Two-pin serial wire debug port - enables firmware programming, breakpoint debugging, and real-time memory inspection without dedicated JTAG header |
| WCO_IN / WCO_OUT | Watch crystal oscillator terminals | Supports 32.768 kHz crystal for precise RTC timing and Deep-Sleep wake-up events with ±20 ppm stability |
Key Features
| Feature | Design Value |
|---|---|
| Smart I/O logic | Eight pins support Boolean operations (AND/OR/XOR/NOT) directly in hardware - offloads simple signal conditioning from CPU and reduces interrupt latency |
| Automatic CAPSENSE™ tuning | SmartSense™ algorithm adjusts sensor parameters (IDAC, scan speed, averaging) in real time - eliminates manual calibration across temperature/humidity variations |
| Configurable SCBs | Three serial blocks dynamically switch between I²C, SPI, and UART protocols via register writes - enables single-hardware design for multiple communication topologies |
| Flexible analog mux | 38-channel analog multiplexer routes any GPIO to SAR ADC, DAC, opamp, or comparator inputs - simplifies AFE design without external switches |
| Deep-Sleep retention | Retains SRAM content and analog peripheral state while drawing only 2.5 µA - allows rapid wake-up (<1 µs) to resume touch scanning or sensor polling |
Applications
| Home Appliance Control Panel | Industrial HMI Touch Interface |
|---|---|
Use Scenario: Capacitive touch buttons and sliders on microwave oven or washing machine control panel operating in humid, noisy environments. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ CSD scanning, managing display backlight PWM, and communicating with main controller via I²C. Use Value: Water-tolerant touch detection (>100 dB SNR) and 2.5 µA Deep-Sleep current extend battery life in cordless portable appliances. | Use Scenario: Operator terminal on factory floor equipment requiring ESD-hardened touch response and real-time status updates. IC Role / Device Role / Timing Role: Standalone HMI controller handling CAPSENSE™ multi-touch, driving 4-bit-per-pin segment LCD, and logging sensor data via UART to PLC. Use Value: Integrated 12-bit SAR ADC and Smart I/O enable direct analog sensor interfacing and pin-level debounce without external logic. |
| Medical Patient Monitor Front Panel | Smart Thermostat User Interface |
Use Scenario: Clinical-grade touch interface on bedside monitor with strict EMC and low-noise analog requirements. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ subsystem with isolated VSSA/VDDA rails performs noise-immune button detection while CPU runs safety-critical monitoring tasks. Use Value: Dual ADC architecture allows simultaneous ECG signal acquisition (SAR) and ambient light sensing (single-slope) without resource contention. | Use Scenario: Battery-powered HVAC thermostat requiring multi-year operation on two AA cells with responsive touch feedback. IC Role / Device Role / Timing Role: System-on-chip managing capacitive touch wake-up, temperature/humidity sensing via IDAC-driven bridge, and BLE coexistence via SCB UART. Use Value: 1.71–5.5 V operating range and 2.5 µA Deep-Sleep current ensure reliable operation across full battery discharge curve. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4146FNI-PS423T | Same package and core, but with 64 KB flash and 8 KB SRAM - no change to analog peripherals or CAPSENSE™ block | Required when firmware exceeds 32 KB or requires larger RAM buffers for complex CAPSENSE™ gesture processing | Select if future firmware growth or additional protocol stacks (e.g., BLE host stack) demand more memory headroom |
| CY8C4045FNI-PS423T | Same 48-pin QFN package and CAPSENSE™ engine, but uses Cortex-M0 (not M0+) and lacks SAR ADC - only includes 10-bit single-slope ADC | Suitable for cost-sensitive touch-only applications without high-precision analog sensing needs | Choose only when SAR ADC and Thumb-2 instruction efficiency are not required - lower BOM cost but reduced computational throughput |
Compared with CY8C4145FNI-PS423T, the CY8C4146FNI-PS423T offers scalable memory for evolving firmware, while the CY8C4045FNI-PS423T trades ADC precision and CPU performance for lower unit cost - making the CY8C4145FNI-PS423T the balanced choice for mid-tier touch + analog sensing designs.
Availability
CY8C4145FNI-PS423T is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI interfaces, medical patient monitor front panels, and smart thermostat user interfaces requiring stable component supply across multi-year production cycles.
Supply support for CY8C4145FNI-PS423T 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, automotive ICs, and programmable embedded systems - headquartered in Munich with global R&D and manufacturing facilities.
The PSoC™ 4100PS product line targets cost-optimized, low-power human-interface applications requiring integrated capacitive sensing, analog signal conditioning, and flexible digital peripherals - designed for rapid prototyping and production deployment using PSoC™ Creator IDE.
FAQ
Does CY8C4145FNI-PS423T support hardware-accelerated cryptographic functions?
No. This device does not include dedicated cryptographic accelerators (e.g., AES, SHA, TRNG). It relies on software libraries for encryption tasks. For hardware crypto, consider Infineon's PSoC™ 6 family with ARM TrustZone and dedicated crypto engines - CY8C6xx7 series devices explicitly list AES-128 and SHA-256 acceleration in their datasheets.
Can the 12-bit SAR ADC operate simultaneously with CAPSENSE™ scanning?
Yes. The SAR ADC and CAPSENSE™ CSD block use independent clock domains and analog routing paths. Concurrent operation is supported in PSoC™ Creator through proper resource assignment - verified in AN85951 and confirmed in Section 2.3 of the 002-22097 Rev. *F datasheet under "Analog Peripherals".
What is the maximum operating temperature for continuous Deep-Sleep mode?
The device is rated for industrial temperature range (–40 °C to +85 °C). Deep-Sleep current remains within specification (≤2.5 µA) across this full range, as validated in Table 6.2.1 of the datasheet under "Device Level Specifications" - no derating required for thermal management in sealed enclosures.
Is external crystal required for CAPSENSE™ operation?
No. CAPSENSE™ CSD operates using the internal IMO (Internal Main Oscillator) at 48 MHz, with optional modulation frequency tuning. The WCO (32.768 kHz) is only required for RTC functionality or ultra-low-power wake-up timing - not for baseline touch scanning or SmartSense™ calibration.
CY8C4145FNI-PS423T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 45-XFBGA, WLCSP
- Series:
- PSOC™ 4 CY8C4100PS
- 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, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 37
- 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:
- A/D 16x10b, 8x12b SAR; D/A 2x7b, 2x13b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4145FNI-PS423T FAQ
1.How can I place an order for CY8C4145FNI-PS423T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4145FNI-PS423T 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 CY8C4145FNI-PS423T reliable?
The price and inventory of CY8C4145FNI-PS423T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4145FNI-PS423T is usually 5 days.
3.What payment methods are accepted for CY8C4145FNI-PS423T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4145FNI-PS423T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4145FNI-PS423T?
CY8C4145FNI-PS423T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4145FNI-PS423T 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 CY8C4145FNI-PS423T?
For technical support, including CY8C4145FNI-PS423T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4145FNI-PS423T requirements.
6.How does Aetrix verify that CY8C4145FNI-PS423T is sourced from the original manufacturer or authorized distributors?
All CY8C4145FNI-PS423T 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 CY8C4145FNI-PS423T meets industry standards.
7.What is the process for return or replacement of CY8C4145FNI-PS423T?
All CY8C4145FNI-PS423T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4145FNI-PS423T, 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 CY8C4145FNI-PS423T part is unused and in its original packaging.
Return procedure for CY8C4145FNI-PS423T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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