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Infineon Technologies CY8C4145LQI-PS423
- Part No.:
- CY8C4145LQI-PS423
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
CY8C4145LQI-PS423.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,765
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Product details
Overview
CY8C4145LQI-PS423 from Infineon is a PSoC™ 4100PS programmable system-on-chip based on Arm® Cortex®-M0+ core, 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 home appliances.
For engineers reviewing the CY8C4145LQI-PS423 datasheet, CY8C4145LQI-PS423 pinout, CY8C4145LQI-PS423 application, or CY8C4145LQI-PS423 equivalent, key selection criteria include its 48-pin QFN package, dual DAC support (13-bit VDAC + 7-bit IDAC), Smart I/O Boolean logic capability, and hardware-accelerated CAPSENSE™ with water-tolerant CSD architecture.
Technical Context
The device implements a 32-bit Arm® Cortex®-M0+ CPU running at up to 48 MHz, paired with an eight-channel descriptor-based DMA controller and configurable serial communication blocks (SCBs) supporting I²C/SPI/UART modes. Its analog subsystem includes two continuous-time opamps, two low-power comparators, and a 38-channel analog mux for custom AFE construction.
CAPSENSE™ uses fourth-generation sigma-delta (CSD) modulation with automatic SmartSense™ tuning, delivering >90 dB SNR and robust operation under wet conditions. The segment LCD driver supports up to four bits per pin in Deep-Sleep, enabling ultra-low-power display interfaces without external controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz - enables real-time deterministic control with Thumb-2 instruction set and NVIC interrupt handling |
| Flash / SRAM | 32 KB flash with read accelerator + 4 KB SRAM - supports firmware updates and local sensor data buffering without external memory |
| Analog Peripherals | 12-bit SAR ADC (1 Msps), 10-bit single-slope ADC, two 13-bit VDACs, two 7-bit IDACs - enables high-resolution sensor signal conditioning and actuator drive |
| CAPSENSE™ | Sigma-Delta (CSD) with SmartSense™ auto-tuning - delivers production-ready touch performance on any GPIO without manual calibration |
| Power Modes | Deep-Sleep @ 2.5 µA digital + operational analog - sustains capacitive sensing or RTC functions while minimizing battery drain |
| Package | 48-pin QFN (7 × 7 mm, 0.5 mm pitch) - provides compact footprint with thermal pad for industrial ambient operation up to 85°C |
| GPIO | 38 programmable pins with analog/digital/CAPSENSE™/LCD roles, eight Smart I/Os - allows pin-level logic operations (AND/OR/XOR) without CPU intervention |
Pinout & Package
CY8C4145LQI-PS423 is housed in a 48-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully configurable via PSoC™ Creator; default alternate functions include SCB0–SCB2 (I²C/SPI/UART), TCPWM0–TCPWM7 (timer/PWM/counter), VREF/VDDA/VSSA analog supply rails, and dedicated CAPSENSE™ shield and sense lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Digital power supply / ground | Primary 1.71–5.5 V domain powering CPU, digital logic, and I/O buffers |
| VDDA / VSSA | Analog power supply / ground | Independent 1.71–5.5 V rail for precision analog blocks; decoupling required for ADC/DAC accuracy |
| XRES | Active-low reset input | Asynchronous hardware reset with internal pull-up; compatible with pushbutton or supervisor IC assertion |
| SWDCK / SWDIO | ARM Serial Wire Debug interface | Two-pin debug port supporting programming, breakpointing, and real-time variable inspection via MiniProg3 or CMSIS-DAP |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7], P4[0]–P4[7] | Programmable GPIO bank | 38 total pins supporting CAPSENSE™ sense/shield, analog mux inputs, PWM outputs, or Smart I/O Boolean logic |
Key Features
| Feature | Design Value |
|---|---|
| Configurable SCBs | Three serial communication blocks runtime-switchable between I²C, SPI, and UART - eliminates need for discrete protocol translators in multi-interface systems |
| Smart I/O | Eight pins support combinational logic (AND/OR/XOR/NOT) directly in I/O cell - offloads simple state-machine tasks from CPU to reduce latency and power |
| Hardware CAPSENSE™ | Dedicated sigma-delta modulator with integrated IDACs and SmartSense™ auto-calibration - achieves >90 dB SNR and tolerates >1 mm water layer without firmware tuning |
| Segment LCD Driver | Drives up to 128 segments using any GPIO as common/segment line, active in Deep-Sleep - enables always-on display in battery-powered devices |
| Programmable Analog Mux | 38-channel analog switch matrix routing signals to ADC, DAC, opamp, or comparator - simplifies AFE design without external multiplexers |
Applications
| Industrial HMI Panels | Smart Thermostats |
|---|---|
Use Scenario: Touch-enabled control interface on factory floor HMIs with glove operation and condensation resistance. IC Role / Device Role / Timing Role: Primary MCU executing UI logic, CAPSENSE™ CSD engine for wet-tolerant touch detection, and TCPWM-driven backlight dimming. Use Value: Eliminates mechanical buttons and external touch controllers; maintains reliable operation at 85°C ambient and under 1 mm water film. | Use Scenario: Battery-powered HVAC controller requiring multi-year operation on AA cells with local temperature/humidity sensing. IC Role / Device Role / Timing Role: System-on-chip managing sensor acquisition (SAR ADC + temperature sensor), wireless comms (SCB as UART to BLE module), and LCD display. Use Value: Deep-Sleep current of 2.5 µA extends battery life beyond 5 years; integrated VDAC drives analog sensor bias without external components. |
| Medical Patient Monitors | Appliance Control Boards |
Use Scenario: Front-panel interface for portable ECG monitors needing IEC 60601-compliant isolation and low-noise analog front-end. IC Role / Device Role / Timing Role: Signal processing unit acquiring analog biopotentials via CTB opamps and 12-bit SAR ADC, then transmitting processed data via SCB-I²C to host MCU. Use Value: On-chip PGA gain stages and matched VDAC references reduce external component count and improve channel-to-channel matching. | Use Scenario: Washing machine main control board implementing motor phase control, water level sensing, and LED/LCD status display. IC Role / Device Role / Timing Role: Real-time controller generating six-phase PWM for BLDC motor drive (TCPWM), reading pressure transducer (IDAC + ADC), and driving segmented display. Use Value: Smart I/O logic synchronizes LED blink patterns with motor states without CPU polling; integrated LCD driver reduces BOM cost by $0.18. |
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 |
|---|---|---|---|
| CY8C4146LQI-PS423 | Same package and core, but with 64 KB flash and 8 KB SRAM - no change to analog/digital peripheral count or CAPSENSE™ capability | Preferred where firmware complexity or bootloader size exceeds 32 KB limit; identical pinout and peripheral mapping | Select when future firmware expansion or secure boot requirements demand larger code space without redesigning PCB layout |
| CY8C4245LTI-PS423 | Same PSoC™ 4100PS family, but in 48-pin TQFP package - identical electrical specs, clocking, and peripheral set | Better suited for prototyping or through-hole assembly; slightly larger footprint and no thermal pad | Choose for hand-soldered development or legacy TQFP-compatible boards; same firmware and PSoC™ Creator project compatibility |
Compared with CY8C4145LQI-PS423, CY8C4146LQI-PS423 offers scalable flash headroom for feature-rich firmware, while CY8C4245LTI-PS423 trades QFN thermal performance for TQFP manufacturability - both retain identical analog signal chain fidelity and CAPSENSE™ behavior.
Availability
CY8C4145LQI-PS423 is available at Aetrix Electronics and suitable for industrial HMI panels, smart thermostats, medical patient monitors, and appliance control boards requiring stable component supply across multi-year production cycles.
Supply support for CY8C4145LQI-PS423 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 wafer fabs.
CY8C4145LQI-PS423 belongs to the PSoC™ 4100PS product line, designed specifically for cost-sensitive, low-power embedded systems requiring integrated capacitive touch, analog signal conditioning, and flexible digital peripherals in a single chip.
FAQ
What debug interface does CY8C4145LQI-PS423 support?
CY8C4145LQI-PS423 uses ARM Serial Wire Debug (SWD) with two dedicated pins: SWDCK (clock) and SWDIO (bidirectional data). It is fully compatible with Infineon's MiniProg3 programmer/debugger and third-party CMSIS-DAP tools. No JTAG header is required, and debug sessions support breakpoints, memory inspection, and real-time variable monitoring without halting peripheral operation.
Does CY8C4145LQI-PS423 require external crystals for full functionality?
No. CY8C4145LQI-PS423 integrates an Internal Main Oscillator (IMO) calibrated to ±2% accuracy and an Internal Low-Speed Oscillator (ILO) for watchdog and sleep timing. A 32.768 kHz watch crystal (WCO) is optional and only needed for precise real-time clock (RTC) operation or sub-millisecond wake-from-Deep-Sleep timing; all other peripherals operate reliably using IMO/ILO sources.
Can CAPSENSE™ on CY8C4145LQI-PS423 operate during Deep-Sleep mode?
Yes. CAPSENSE™ CSD hardware remains active in Deep-Sleep mode with digital current reduced to 2.5 µA. The sigma-delta modulator, IDACs, and scanning logic continue autonomous operation, generating interrupts on touch events. This enables true "always-on" touch wake-up without CPU involvement, preserving battery life in portable and remote-sensor applications.
How many independent PWM outputs can CY8C4145LQI-PS423 generate simultaneously?
CY8C4145LQI-PS423 contains eight independent TCPWM blocks, each capable of generating one PWM output with configurable period, compare value, dead-time insertion, and center-aligned or edge-aligned modes. All eight can operate concurrently - for example, driving three-phase BLDC motor control (6 outputs) plus auxiliary fan and LED dimming (2 outputs) - with no resource contention or shared timer registers.
CY8C4145LQI-PS423 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100PS
- Packaging:
- Tray
- 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, CapSense, LCD, LVD, POR, PWM, WDT
- Number of I/O:
- 38
- 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 Slope, 8x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4145LQI-PS423 FAQ
1.How can I place an order for CY8C4145LQI-PS423 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4145LQI-PS423 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 CY8C4145LQI-PS423 reliable?
The price and inventory of CY8C4145LQI-PS423 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4145LQI-PS423 is usually 5 days.
3.What payment methods are accepted for CY8C4145LQI-PS423?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4145LQI-PS423 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4145LQI-PS423?
CY8C4145LQI-PS423 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4145LQI-PS423 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 CY8C4145LQI-PS423?
For technical support, including CY8C4145LQI-PS423 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4145LQI-PS423 requirements.
6.How does Aetrix verify that CY8C4145LQI-PS423 is sourced from the original manufacturer or authorized distributors?
All CY8C4145LQI-PS423 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 CY8C4145LQI-PS423 meets industry standards.
7.What is the process for return or replacement of CY8C4145LQI-PS423?
All CY8C4145LQI-PS423 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4145LQI-PS423, 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 CY8C4145LQI-PS423 part is unused and in its original packaging.
Return procedure for CY8C4145LQI-PS423:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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