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Infineon Technologies CY8C4146LQI-S432
- Part No.:
- CY8C4146LQI-S432
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQI-S432.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,294
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Product details
Overview
CY8C4146LQI-S432 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 - deployed in industrial HMI, touch-enabled consumer devices, and low-power embedded control systems.
For engineers reviewing the CY8C4146LQI-S432 datasheet, CY8C4146LQI-S432 pinout, CY8C4146LQI-S432 application, or CY8C4146LQI-S432 equivalent, key selection criteria include deep-sleep current (2.5 µA), CAPSENSE™ SNR (>5:1), programmable drive strength per GPIO, SmartSense auto-tuning capability, and ModusToolbox™/PSoC™ Creator toolchain support.
Technical Context
The CY8C4146LQI-S432 implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ core orchestrates configurable analog resources (CTB opamps, SAR ADC, CSD block) and digital peripherals (TCPWM, SCB, PLD). Its clock system integrates IMO (±2%), ILO (32 kHz), and WCO for precision timing across sleep/wake cycles.
Analog signal chain flexibility includes opamp operation in Deep Sleep mode, comparator-triggered TCPWM kill signals for motor safety, and hardware-accelerated sigma-delta CAPSENSE™ with water tolerance. All GPIOs support CAPSENSE™, analog input, or programmable digital functions with configurable slew rate and drive strength.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ at 48 MHz - enables real-time deterministic control with single-cycle multiply for sensor fusion or motor commutation. |
| Memory | 64 KB flash + 8 KB SRAM - sufficient for firmware with CAPSENSE™ middleware, communication stacks, and application logic without external memory. |
| ADC | 12-bit SAR ADC @ 1 Msps with sequencer & averaging - supports high-fidelity analog monitoring (e.g., battery voltage, temperature) with noise rejection. |
| CAPSENSE™ | Sigma-delta CSD with >5:1 SNR and SmartSense auto-tuning - delivers robust touch detection under wet conditions and varying environmental capacitance. |
| Low-Power Mode | Deep Sleep current = 2.5 µA with operational analog - enables multi-year battery life in always-on touch interfaces or IoT edge nodes. |
| GPIO Flexibility | Up to 36 pins, each configurable as CAPSENSE™, analog input, or digital I/O with programmable drive strength - eliminates external level shifters or dedicated touch controllers. |
| Serial Interfaces | Three SCBs supporting concurrent I²C, SPI, UART - allows simultaneous sensor hub (I²C), display interface (SPI), and debug/UART communication. |
Pinout & Package
Package: 44-pin TQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | General-purpose I/O / CAPSENSE™ CSD channel | Supports mutual/capacitive sensing, analog input, or digital function; programmable drive strength (0.5–20 mA) and slew rate. |
| P1[0]–P1[7] | General-purpose I/O / SCB0/1/2 signal routing | Configurable as I²C SDA/SCL, SPI MOSI/MISO/SCLK/SS, or UART TX/RX - no fixed peripheral binding. |
| P2[0]–P2[7] | Analog input / Opamp output / IDAC sink | Connects directly to SAR ADC input, CTB opamp output, or IDAC current source - enables sensor front-end integration. |
| XRES | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts 1.71–5.5 V logic levels - simplifies external reset circuitry. |
| VDD/VSS | Power supply / Ground | Single 1.71–5.5 V supply rail; decoupling required per datasheet layout guidelines to maintain analog integrity and low-noise CAPSENSE™ operation. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | Two CTB opamps operate in Deep Sleep; support ADC input buffering, comparator mode, and high-drive external output - reduces BOM count for signal conditioning. |
| Hardware-Accelerated CAPSENSE™ | Sigma-delta CSD block with >5:1 SNR and automatic SmartSense tuning - eliminates manual calibration effort and improves production yield on curved or coated touch surfaces. |
| Reconfigurable Serial Peripherals | Three SCBs dynamically assigned as I²C/SPI/UART at runtime - enables flexible peripheral mapping without PCB redesign when interface requirements change. |
| Integrated Timing Resources | Five TCPWM blocks with center-aligned PWM, quadrature decode, and comparator-triggered kill signals - supports BLDC motor control and encoder-based position feedback. |
| Unified Development Flow | Full support for PSoC™ Creator schematic entry and ModusToolbox™ IDE with CAPSENSE™ and PDL libraries - accelerates prototyping and firmware reuse across PSoC™ 4100S variants. |
Applications
| Industrial HMI Panels | Smart Home Appliances |
|---|---|
|
Use Scenario: Touch-enabled control panel on HVAC units or PLC operator interfaces operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Primary MCU handling CAPSENSE™ button/slider detection, local sensor readout (temp/humidity), and RS-485/UART communication to host controller. Use Value: Deep Sleep current of 2.5 µA enables energy harvesting compatibility; >5:1 CAPSENSE™ SNR ensures reliable operation near variable-frequency drives. |
Use Scenario: Touch-sensitive cooktop or refrigerator door interface exposed to condensation and cleaning agents. IC Role / Device Role / Timing Role: Dedicated touch controller with water-tolerant CAPSENSE™, driving LED indicators via GPIO PWM, and managing local EEPROM over I²C. Use Value: SmartSense auto-tuning adapts to changing dielectric conditions (e.g., water film); programmable GPIO drive strength avoids false triggers from ESD events. |
| Wearable Health Monitors | IoT Edge Sensor Nodes |
|
Use Scenario: Compact pulse oximeter or skin temperature patch requiring ultra-low power and analog signal conditioning. IC Role / Device Role / Timing Role: Signal acquisition MCU using SAR ADC for photodiode inputs, CTB opamps for transimpedance amplification, and Bluetooth UART bridge. Use Value: Integrated opamps eliminate external amplifiers; 2.5 µA Deep Sleep extends coin-cell battery life beyond 12 months. |
Use Scenario: Battery-powered environmental sensor node measuring air quality, light, and motion in smart building deployments. IC Role / Device Role / Timing Role: Central data aggregator using three SCBs for I²C gas sensors, SPI ambient light IC, and UART debug/log interface. Use Value: Reconfigurable SCBs allow firmware-driven interface remapping - one PCB supports multiple sensor configurations without hardware changes. |
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 |
|---|---|---|---|
| CY8C4147AZI-S445 | Same PSoC™ 4100S family, but 48-pin QFN package, higher flash (128 KB), and additional SCB - no WCO integrated. | Better suited for space-constrained designs needing more memory and serial interfaces, but requires external 32.768 kHz crystal for RTC. | Select when board layout favors QFN, firmware size exceeds 64 KB, or RTC accuracy < ±20 ppm is mandatory. |
| STM32G071KBT6 | Arm® Cortex®-M0+, 64 MHz, 128 KB flash, 36 KB SRAM, but no integrated CAPSENSE™ or programmable analog blocks. | Requires external touch controller and signal-conditioning ICs for comparable capacitive sensing performance. | Select when cost sensitivity outweighs design integration benefits, and analog signal paths are simple or handled externally. |
Compared with CY8C4146LQI-S432, CY8C4147AZI-S445 offers greater memory and interface density in QFN, while STM32G071KBT6 trades programmable analog flexibility for lower unit cost and broader ecosystem tooling - choice depends on whether CAPSENSE™ integration and analog configurability justify the PSoC™ architecture premium.
Availability
CY8C4146LQI-S432 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, wearable health monitors, and IoT edge sensor nodes requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4146LQI-S432 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 and manufacturing infrastructure.
CY8C4146LQI-S432 belongs to the PSoC™ 4100S product line - designed specifically for cost-sensitive, low-power embedded systems requiring integrated capacitive touch, analog signal processing, and field-programmable digital logic without external components.
FAQ
Does CY8C4146LQI-S432 support USB device functionality?
No. The CY8C4146LQI-S432 does not include a USB PHY or USB controller. It relies on external USB-to-UART bridges (e.g., CP2102) or host-side USB enumeration for connectivity. Its three SCBs support only I²C, SPI, and UART protocols - USB is outside its integrated peripheral scope.
What is the maximum operating temperature for CY8C4146LQI-S432?
The CY8C4146LQI-S432 is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in Section 5.2.1 of the official datasheet (002-00122 Rev. *Q), with thermal derating applied above 70 °C for sustained 48 MHz operation and full GPIO drive strength.
Can the SAR ADC perform simultaneous sampling on multiple channels?
No. The 12-bit SAR ADC has a single conversion core with a channel sequencer that supports automated scanning and signal averaging, but it does not support true simultaneous sampling across multiple inputs. Sample-and-hold is sequential per channel, with minimum inter-channel delay of 1 µs in high-speed mode.
Is the WCO (Watch Crystal Oscillator) mandatory for real-time clock functionality?
Yes. The WCO is required for accurate RTC operation below ±20 ppm drift. While the internal ILO provides 32 kHz timing, its ±50% accuracy makes it unsuitable for timekeeping; the WCO (32.768 kHz crystal) must be connected to XIN/XOUT pins to enable precise calendar/time functions in Deep Sleep mode.
CY8C4146LQI-S432 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100S
- 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, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, POR, PWM, WDT
- Number of I/O:
- 27
- 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:
CY8C4146LQI-S432 FAQ
1.How can I place an order for CY8C4146LQI-S432 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQI-S432 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 CY8C4146LQI-S432 reliable?
The price and inventory of CY8C4146LQI-S432 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQI-S432 is usually 5 days.
3.What payment methods are accepted for CY8C4146LQI-S432?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQI-S432 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQI-S432?
CY8C4146LQI-S432 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQI-S432 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 CY8C4146LQI-S432?
For technical support, including CY8C4146LQI-S432 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQI-S432 requirements.
6.How does Aetrix verify that CY8C4146LQI-S432 is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQI-S432 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 CY8C4146LQI-S432 meets industry standards.
7.What is the process for return or replacement of CY8C4146LQI-S432?
All CY8C4146LQI-S432 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQI-S432, 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 CY8C4146LQI-S432 part is unused and in its original packaging.
Return procedure for CY8C4146LQI-S432:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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