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Infineon Technologies CY8C4145FNQ-PS423T
- Part No.:
- CY8C4145FNQ-PS423T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 45-XFBGA, WLCSP
- Datasheet:
-
CY8C4145FNQ-PS423T.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 45WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,143
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Product details
Overview
CY8C4145FNQ-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 for robust capacitive touch, and 38 GPIOs with Smart I/O capability - deployed in industrial HMI, consumer touch panels, and smart sensor nodes.
For engineers reviewing the CY8C4145FNQ-PS423T datasheet, CY8C4145FNQ-PS423T pinout, CY8C4145FNQ-PS423T application, or CY8C4145FNQ-PS423T equivalent, key selection criteria include integrated analog front-end configurability, Deep-Sleep current (2.5 µA), WCO support, and runtime-reconfigurable SCBs for I²C/SPI/UART.
Technical Context
The device implements a mixed-signal reconfigurable architecture where analog blocks (CTB opamps, VDACs, IDACs) and digital peripherals (TCPWM, SCBs) are routed via a programmable interconnect matrix. Its CAPSENSE™ CSD engine delivers >100 dB SNR and hardware-accelerated water-tolerant sensing without firmware overhead.
System-level timing relies on multiple clock sources: IMO (internal main oscillator, 48 MHz), ILO (low-power 32 kHz), and WCO (32.768 kHz crystal). The 8-channel descriptor-based DMA enables zero-CPU-cycle peripheral-to-memory transfers for real-time sensor data acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - deterministic real-time execution with Thumb-2 instruction set |
| Flash / SRAM | 32 KB flash with read accelerator + 4 KB SRAM - supports bootloader, firmware updates, and local sensor buffering |
| Analog Peripherals | 12-bit SAR ADC (1 Msps), 10-bit single-slope ADC, 4 opamps, 2×13-bit VDACs, 2×7-bit IDACs - enables full AFE implementation on-die |
| CAPSENSE™ | Sigma-Delta (CSD) engine with SmartSense™ auto-tuning - eliminates manual calibration for touch buttons/sliders under varying humidity |
| GPIO & Smart I/O | 38 programmable pins with drive strength/slew control + 8 Smart I/Os - allows pin-level Boolean logic (AND/OR/XOR) without CPU intervention |
| Low-Power Modes | Deep-Sleep at 2.5 µA (digital active) with WCO running - sustains real-time clock and wake-on-touch with sub-3 µs latency |
| Communication Blocks | 3× SCBs configurable as I²C/SPI/UART - supports concurrent multi-protocol connectivity (e.g., I²C sensor hub + UART debug) |
Pinout & Package
48-pin QFN (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions validated per Infineon datasheet Rev. *F (pp.16–19): all pins support GPIO, analog, CAPSENSE™, or LCD roles; dedicated XRES, VDDA/VSSA, VDDD/VSSD, WCO_IN/WCO_OUT, SWDCK/SWDIO.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XRES | Active-low reset input | Asynchronous hardware reset with internal pull-up; compatible with open-drain pushbutton or supervisor IC |
| VDDD / VDDA | Digital/analog power supply | Separate 1.71–5.5 V domains enable noise isolation between digital logic and precision analog paths |
| WCO_IN / WCO_OUT | 32.768 kHz crystal interface | Supports low-power RTC and Deep-Sleep wake-up with ±20 ppm stability over –40°C to +85°C |
| SWDIO / SWDCK | ARM Serial Wire Debug interface | 2-pin debug port enabling flash programming, breakpoint debugging, and real-time memory inspection |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO banks | Each pin assignable to digital, analog, CAPSENSE™, or LCD segment/common - configured via PSoC™ Creator |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | CTB opamps + VDACs + IDACs form user-defined AFEs (e.g., current-source transimpedance amplifier for photodiode sensing) |
| CAPSENSE™ CSD Engine | Hardware-accelerated sigma-delta modulation with >100 dB SNR - rejects 50/60 Hz noise and tolerates >2 mm water overlay |
| Smart I/O Logic | 8 pins support combinational logic (AND/OR/XOR/NOT) directly in IO cell - offloads simple state-machine tasks from CPU |
| Descriptor-Based DMA | 8-channel controller moves ADC samples or UART RX buffers to SRAM without CPU cycles - enables deterministic sensor fusion loops |
| Runtime-Configurable SCBs | Three serial blocks dynamically switch between I²C master/slave, SPI master/slave, or UART modes - simplifies multi-peripheral BOM consolidation |
Applications
| Industrial HMI Panels | Consumer Touch Appliances |
|---|---|
Use Scenario: Touch-enabled operator interface on PLC-mounted control panel with glove operation and condensation resistance. IC Role / Device Role / Timing Role: Primary MCU executing HMI firmware while CAPSENSE™ CSD handles wet-finger detection and button debouncing in hardware. Use Value: Eliminates external touch controller IC and reduces BOM cost by 30%; Deep-Sleep mode maintains RTC and wake-on-touch at <3 µA. | Use Scenario: Touch slider and buttons on kitchen oven display operating in high-humidity, temperature-cycled environment. IC Role / Device Role / Timing Role: System controller managing display backlight, relay drivers, and self-calibrating capacitive sensing via SmartSense™. Use Value: Single-chip solution replaces discrete MCU + touch ASIC + voltage references; achieves IPX4-rated touch reliability without shield layers. |
| Smart Sensor Nodes | Medical Wearables |
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and VOC with local edge processing. IC Role / Device Role / Timing Role: Data acquisition hub: SAR ADC reads analog sensors, TCPWM triggers periodic sampling, DMA streams results to SRAM. Use Value: 2.5 µA Deep-Sleep current extends CR2032 battery life to >2 years; integrated opamps condition thermistor signals without external amplifiers. | Use Scenario: ECG patch with dry-electrode contact detection and motion artifact filtering. IC Role / Device Role / Timing Role: Analog front-end controller: IDACs drive electrode excitation, CTB opamps implement active filter, CAPSENSE™ verifies skin contact. Use Value: On-chip programmable analog eliminates 5+ passive components per channel; Smart I/O validates electrode attachment before signal acquisition. |
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 |
|---|---|---|---|
| CY8C4146FNQ-PS423T | Same package and core, but with 64 KB flash and 8 KB SRAM - no change in analog/digital peripheral count or CAPSENSE™ capability | Required when firmware exceeds 32 KB or requires larger RAM buffers for sensor fusion algorithms | Select only if code size or runtime memory demand justifies higher cost and footprint compatibility |
| STM32G071CBT6 | Arm Cortex-M0+, 64 MHz, 128 KB flash, 36 KB SRAM; lacks integrated CAPSENSE™, programmable analog blocks, and Smart I/O | Suitable for non-touch applications needing higher compute throughput or larger memory, but requires external AFE and touch controller | Choose when prioritizing raw performance and ecosystem tooling over integrated analog/touch flexibility |
Compared with CY8C4145FNQ-PS423T, the CY8C4146 variant offers scalable memory without architectural change, while STM32G071 demands external components for touch and analog signal conditioning - making CY8C4145 optimal for cost-sensitive, touch-integrated embedded designs.
Availability
CY8C4145FNQ-PS423T is available at Aetrix Electronics and suitable for industrial HMI panels, consumer touch appliances, and smart sensor nodes requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.
Supply support for CY8C4145FNQ-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, sensing, and microcontroller solutions for industrial, automotive, and IoT markets.
The PSoC™ 4100PS product line delivers reconfigurable mixed-signal SoCs targeting cost-sensitive, touch-enabled embedded systems where analog integration, ultra-low-power operation, and rapid prototyping are critical design requirements.
FAQ
Does CY8C4145FNQ-PS423T support USB communication?
No. This device lacks a USB PHY and dedicated USB controller. Communication is limited to the three configurable SCBs supporting I²C, SPI, and UART protocols. For USB connectivity, external bridge ICs (e.g., CP2102N) or migration to PSoC™ 4 BLE or PSoC™ 6 families is required.
What development tools are required to program CY8C4145FNQ-PS423T?
PSoC™ Creator IDE (discontinued but still supported) or ModusToolbox™ 3.x with PSoC™ 4 Device Family Pack is required. Programming uses SWD interface via MiniProg3 or KitProg3 debug probes. No JTAG adapter is needed - SWDIO/SWDCK pins provide full flash, debug, and configuration access.
Can the 12-bit SAR ADC operate during Deep-Sleep mode?
No. The SAR ADC requires active CPU clock and power domain control; it is disabled in Deep-Sleep. However, the low-power comparators and CAPSENSE™ CSD engine remain functional and can trigger wake-up events, enabling touch-initiated resume with <3 µs latency.
Is the WCO circuit internally loaded, or must external load capacitors be added?
External 12 pF ceramic load capacitors are mandatory on both WCO_IN and WCO_OUT pins per Infineon layout guidelines. The internal oscillator circuit does not include programmable load capacitance - incorrect capacitor values cause frequency drift or startup failure across temperature and voltage ranges.
CY8C4145FNQ-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
- Speed:
- 48MHz
- Connectivity:
- FIFO, I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, DMA, LCD, POR, PWM, Temp Sensor, 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 SAR, 8x12b Sigma-Delta; D/A 2x7b, 2x8/13b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4145FNQ-PS423T FAQ
1.How can I place an order for CY8C4145FNQ-PS423T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4145FNQ-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 CY8C4145FNQ-PS423T reliable?
The price and inventory of CY8C4145FNQ-PS423T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4145FNQ-PS423T is usually 5 days.
3.What payment methods are accepted for CY8C4145FNQ-PS423T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4145FNQ-PS423T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4145FNQ-PS423T?
CY8C4145FNQ-PS423T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4145FNQ-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 CY8C4145FNQ-PS423T?
For technical support, including CY8C4145FNQ-PS423T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4145FNQ-PS423T requirements.
6.How does Aetrix verify that CY8C4145FNQ-PS423T is sourced from the original manufacturer or authorized distributors?
All CY8C4145FNQ-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 CY8C4145FNQ-PS423T meets industry standards.
7.What is the process for return or replacement of CY8C4145FNQ-PS423T?
All CY8C4145FNQ-PS423T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4145FNQ-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 CY8C4145FNQ-PS423T part is unused and in its original packaging.
Return procedure for CY8C4145FNQ-PS423T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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