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Infineon Technologies CY8C4145FNI-PS433T
- Part No.:
- CY8C4145FNI-PS433T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 45-XFBGA, WLCSP
- Datasheet:
-
CY8C4145FNI-PS433T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 45WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,543
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Product details
Overview
CY8C4145FNI-PS433T from Infineon is a PSoC™ 4100PS programmable system-on-chip based on Arm® Cortex®-M0+ CPU, integrating 32 KB flash, 4 KB SRAM, dual ADCs (12-bit SAR + 10-bit single-slope), CAPSENSE™ sigma-delta capacitive sensing, and programmable analog/digital peripherals. It operates from 1.71 V to 5.5 V and supports Deep-Sleep mode with 2.5 µA digital current, targeting embedded human-interface and sensor-fusion applications in industrial control panels and smart appliances.
For engineers reviewing the CY8C4145FNI-PS433T datasheet, CY8C4145FNI-PS433T pinout, CY8C4145FNI-PS433T application, or CY8C4145FNI-PS433T equivalent, key selection considerations include its 48-pin QFN package, dual DAC architecture (13-bit VDAC + 7-bit IDAC), Smart I/O Boolean logic capability, and hardware-accelerated CAPSENSE™ with water-tolerant CSD engine.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ core (up to 48 MHz) manages firmware execution while dedicated hardware blocks handle real-time analog acquisition (SAR ADC with up to 1 MSPS), sigma-delta CAPSENSE™ sensing (with SmartSense™ auto-tuning), and configurable TCPWM timers for motor control or LED dimming. Its analog subsystem includes four continuous-time opamps, two low-power comparators, and a 38-channel analog mux enabling custom AFE topologies without external components.
Digital flexibility is delivered via three run-time reconfigurable Serial Communication Blocks (SCB) supporting I²C/SPI/UART simultaneously, eight 16-bit TCPWM units with center-aligned PWM and pseudo-random modulation modes, and eight-channel descriptor-based DMA for zero-CPU-overhead data movement between peripherals and memory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ up to 48 MHz - enables deterministic real-time control with Thumb-2 instruction set and NVIC interrupt handling |
| Flash / SRAM | 32 KB flash with read accelerator + 4 KB SRAM - supports moderate firmware complexity and runtime variable storage for sensor fusion algorithms |
| Analog Converters | 12-bit SAR ADC (1 MSPS) + 10-bit single-slope ADC - provides high-speed precision sampling and low-power background monitoring in parallel |
| CAPSENSE™ Engine | Sigma-Delta (CSD) with hardware SmartSense™ tuning - delivers >100:1 SNR and robust operation under wet/finger-contaminated conditions |
| DAC Outputs | Two 13-bit voltage DACs + two 7-bit current DACs - enables programmable biasing, sensor excitation, and analog output generation on any GPIO |
| GPIO Count | 38 programmable pins with analog/digital/CAPSENSE™/LCD functions - supports multi-modal I/O routing and Smart I/O Boolean logic per pin |
| Package | 48-pin QFN (7 × 7 mm, 0.5 mm pitch) - surface-mount compatible with standard reflow profiles and thermal pad for enhanced power dissipation |
Pinout & Package
CY8C4145FNI-PS433T is housed in a 48-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments are validated per Infineon datasheet 002-22097 Rev. *F Section 3 "Pinouts", confirming full compatibility with PSoC™ 4100PS family routing and power integrity requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main supply input (1.71–5.5 V) | Power domain for digital logic, CPU, and most analog blocks; requires local 100 nF + 10 µF decoupling |
| VSS | Digital ground reference | Common return path for digital signals and internal logic; must be connected to PCB ground plane |
| XRES | Active-low reset input | Asynchronous reset trigger; internal pull-up ensures valid state on power-up without external component |
| P0[0]–P0[7] | Programmable GPIO bank 0 | Support CAPSENSE™, analog input/output, or digital logic with configurable drive strength and slew rate |
| SCB0_SDA / SCB0_SCL | I²C interface pins | Configurable as open-drain I²C bus lines with internal pull-ups; support standard/fast-mode timing |
| WCO_IN / WCO_OUT | 32.768 kHz watch crystal oscillator terminals | Enable ultra-low-power RTC operation during Deep-Sleep with <1 µA oscillator current |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Subsystem | Four CTB opamps + two LP comparators + 38-channel analog mux - allows building custom sensor signal chains (e.g., PGA + filter + ADC) without external ICs |
| CAPSENSE™ CSD Engine | Hardware-accelerated sigma-delta modulator with automatic SmartSense™ calibration - eliminates manual tuning for button/slider/wheel designs across temperature/humidity |
| Smart I/O Logic | Eight pins support Boolean operations (AND/OR/XOR) on input/output signals - enables real-time pin-level signal conditioning without CPU intervention |
| Segment LCD Drive | All GPIOs support common/segment LCD driving with 4-bit memory retention in Deep-Sleep - reduces BOM count in display-integrated HMI devices |
| Descriptor-Based DMA | Eight-channel controller with scatter-gather support - moves ADC samples or UART RX buffers directly to SRAM without CPU cycles or interrupt overhead |
Applications
| Industrial Control Panel | Smart Home Appliance UI |
|---|---|
Use Scenario: Touch-enabled operator interface on PLC-mounted HMIs with environmental sealing requirements. IC Role / Device Role / Timing Role: Primary MCU executing control logic while managing CAPSENSE™ buttons/sliders and driving segmented LCD display. Use Value: Hardware CSD engine maintains >95% touch accuracy under condensation; Deep-Sleep + WCO enables battery-backed RTC with <2.5 µA system current. | Use Scenario: Wash-resistant touch controls on refrigerator door with ambient light compensation. IC Role / Device Role / Timing Role: Capacitive sensing hub with integrated analog front-end for proximity detection and LED backlight dimming via TCPWM. Use Value: Dual ADCs concurrently sample ambient light sensor and touch baseline; Smart I/O logic debounces mechanical switch inputs without firmware polling. |
| Medical Sensor Node | Automotive Cabin Control |
Use Scenario: Portable patient monitor with ECG electrode interface and touch navigation. IC Role / Device Role / Timing Role: Signal acquisition MCU with programmable analog gain stages, 12-bit SAR ADC sampling at 10 kSPS, and CAPSENSE™ for menu navigation. Use Value: CTB opamps configure as instrumentation amplifiers; VDACs provide precise electrode bias voltages; 38-channel analog mux routes multiple sensor inputs to shared ADC. | Use Scenario: HVAC control panel in vehicle cabin with glove-box lighting and touch-sensitive climate sliders. IC Role / Device Role / Timing Role: Mixed-signal controller interfacing with LIN bus (via SCB), driving RGB LEDs (TCPWM), and detecting finger presence (CAPSENSE™). Use Value: Three SCBs operate simultaneously as LIN transceiver, I²C sensor interface, and SPI display driver; IDACs enable self-capacitance measurement on non-dedicated pins. |
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-PS433T | Same package and core, but with 64 KB flash and 8 KB SRAM - no change in analog/digital peripheral count or CAPSENSE™ capability | Better suited for firmware-intensive applications requiring larger code space or complex bootloader + application partitioning | Select when firmware size exceeds 32 KB or secure boot features are required |
| CY8C4045FNI-PS433T | Same footprint and peripheral set, but with 16 KB flash, 2 KB SRAM, and no 12-bit SAR ADC (only 10-bit single-slope) | Targeted at cost-sensitive designs with simpler sensing or lower-resolution analog acquisition needs | Select when 12-bit precision is unnecessary and BOM cost reduction is prioritized over future firmware scalability |
Compared with CY8C4146FNI-PS433T, this part trades flash/SRAM headroom for lower unit cost while retaining identical analog performance and CAPSENSE™ fidelity; versus CY8C4045FNI-PS433T, it adds critical 12-bit SAR conversion capability essential for medical-grade sensor interfaces and higher-accuracy industrial feedback loops.
Availability
CY8C4145FNI-PS433T is available at Aetrix Electronics and suitable for industrial control panels, smart home appliance UIs, medical sensor nodes, and automotive cabin controls requiring stable component supply, long-term lifecycle assurance, and qualified reflow-compatible packaging.
Supply support for CY8C4145FNI-PS433T 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 embedded controllers, with global R&D and manufacturing infrastructure.
This device belongs to the PSoC™ 4100PS product line, designed specifically for cost-optimized, mixed-signal embedded applications requiring integrated capacitive sensing, programmable analog, and Arm®-based firmware execution in compact form factors.
FAQ
Does CY8C4145FNI-PS433T support USB connectivity?
No. This device does not include a USB physical layer or USB controller. Communication is limited to SCB-configured interfaces: I²C, SPI, and UART. For USB host/device functionality, designers must use an external USB-to-UART bridge or select a PSoC™ 4000S or PSoC™ 6 device with native USB support.
What development tools are required to program CY8C4145FNI-PS433T?
Programming and debugging require the MiniProg3 programmer/debugger and Infineon's free PSoC™ Creator IDE (Windows only). The IDE provides schematic-based hardware design entry, automatic analog/digital routing, and integrated firmware development with Arm® SWD interface support.
Can the 12-bit SAR ADC perform simultaneous sampling on multiple channels?
No. The 12-bit SAR ADC has a single sample-and-hold circuit and supports sequential channel scanning via hardware sequencer, but not true simultaneous sampling. For synchronized multi-channel acquisition, external analog multiplexing or a device with dual independent SAR ADCs (e.g., PSoC™ 6) is required.
Is the exposed thermal pad on the QFN package electrically connected?
Yes. The exposed thermal pad is internally connected to VSS and must be soldered to a PCB copper pour tied to the main ground plane. Thermal performance and electrical noise immunity depend on proper pad connection and adequate via stitching (minimum 4× 0.3 mm vias recommended per Infineon layout guidelines).
CY8C4145FNI-PS433T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 45-XFBGA, WLCSP
- Series:
- PSOC™ 4 CY8C4100PS
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- 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, CapSense, 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-PS433T FAQ
1.How can I place an order for CY8C4145FNI-PS433T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4145FNI-PS433T 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-PS433T reliable?
The price and inventory of CY8C4145FNI-PS433T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4145FNI-PS433T is usually 5 days.
3.What payment methods are accepted for CY8C4145FNI-PS433T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4145FNI-PS433T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4145FNI-PS433T?
CY8C4145FNI-PS433T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4145FNI-PS433T 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-PS433T?
For technical support, including CY8C4145FNI-PS433T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4145FNI-PS433T requirements.
6.How does Aetrix verify that CY8C4145FNI-PS433T is sourced from the original manufacturer or authorized distributors?
All CY8C4145FNI-PS433T 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-PS433T meets industry standards.
7.What is the process for return or replacement of CY8C4145FNI-PS433T?
All CY8C4145FNI-PS433T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4145FNI-PS433T, 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-PS433T part is unused and in its original packaging.
Return procedure for CY8C4145FNI-PS433T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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