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Infineon Technologies CY8C4146LQI-S433T
- Part No.:
- CY8C4146LQI-S433T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQI-S433T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,380
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Product details
Overview
CY8C4146LQI-S433T from Infineon is a PSoC™ 4100S-series programmable system-on-chip integrating an Arm® Cortex®-M0+ CPU (48 MHz), 64 KB flash, 8 KB SRAM, and dedicated CAPSENSE™ capacitive sensing with >5:1 SNR. It supports reconfigurable analog (dual opamps, 12-bit 1-Msps SAR ADC, dual IDACs) and digital blocks (TCPWM, SCB, Smart I/O), targeting human-interface and low-power embedded control applications including touch-enabled industrial HMI and battery-powered sensor nodes.
For engineers reviewing the CY8C4146LQI-S433T datasheet, CY8C4146LQI-S433T pinout, CY8C4146LQI-S433T application, or CY8C4146LQI-S433T equivalent, key selection criteria include deep-sleep current (2.5 µA), CAPSENSE™ water tolerance, reconfigurable serial communication (I²C/SPI/UART), and GPIO flexibility (36 pins, all CAPSENSE™-capable).
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Cortex®-M0+ core coordinates programmable analog blocks (CTB opamps, SAR ADC, CSD sigma-delta engine) and digital peripherals (TCPWM, SCB, Smart I/O). All analog resources-including opamps and comparators-remain operational in Deep Sleep mode at 2.5 µA system current.
Its clock system integrates three independent sources: ±2% IMO, 32 kHz ILO, and external WCO, enabling precise timing for CAPSENSE™ auto-tuning (SmartSense) and synchronous serial communication. The 36-GPIO TQFP-48 package routes signals through flexible interconnect fabric supporting concurrent analog acquisition, digital logic, and touch scanning without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time sensor fusion and deterministic interrupt response in resource-constrained systems. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - supports firmware updates and local data buffering without external memory. |
| Analog-to-Digital | 12-bit 1-Msps SAR ADC with sequencer and averaging - delivers high-resolution, low-latency acquisition for multi-channel sensor monitoring. |
| CAPSENSE™ Performance | Sigma-delta CSD with >5:1 SNR and hardware-based water tolerance - eliminates false triggers in humid or wet environments without firmware compensation. |
| Low-Power Operation | 2.5 µA Deep Sleep current with active analog (opamps, comparators, CSD) - extends battery life in always-on touch interfaces. |
| Serial Interfaces | Three reconfigurable SCBs supporting I²C, SPI, or UART simultaneously - simplifies connectivity to displays, sensors, and host controllers using shared pin resources. |
| GPIO Flexibility | 36 pins, all configurable as CAPSENSE™, analog input/output, or digital I/O with programmable drive strength and slew rate - reduces BOM count and PCB layer count. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers digital logic, analog blocks, and GPIO; supports single-supply operation across industrial voltage ranges. |
| VSS | Digital ground | Reference return for digital circuitry; must be connected to low-impedance ground plane to maintain signal integrity and noise immunity. |
| P0[0]–P0[7] | Programmable GPIO | Eight pins supporting CAPSENSE™, analog input (SAR ADC), opamp output, or digital I/O; configurable drive modes enable direct LED/LCD segment driving. |
| P1[0]–P1[7] | Programmable GPIO | Eight pins with Smart I/O capability - perform pre-processing (AND/OR/XOR) on incoming signals before CPU intervention, reducing latency and load. |
| SWDCLK / SWDIO | Debug interface | Two-pin Serial Wire Debug interface for programming and real-time debugging; operates independently of application code execution. |
| XRES | External reset | Active-low asynchronous reset input; debounced internally; allows system-level fault recovery without power cycle. |
| WCO_IN / WCO_OUT | 32 kHz crystal interface | Connects to external watch crystal for precision timing of CAPSENSE™ auto-tuning and low-power RTC functions. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable SCBs | Three serial blocks dynamically switch between I²C, SPI, and UART protocols at runtime - eliminates need for multiple fixed-function peripherals and simplifies firmware adaptation. |
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration adjusts sensor parameters automatically during operation - removes manual tuning effort and ensures consistent performance across temperature/humidity variations. |
| Deep Sleep Analog Retention | Opamps, comparators, and CSD remain fully functional at 2.5 µA system current - enables continuous touch wake-up detection without CPU wake-up overhead. |
| Programmable CTB Opamps | Dual continuous-time opamps support high-drive external mode (25 mA) or high-bandwidth internal mode (10 MHz GBW) - accommodates both actuator driving and precision signal conditioning in one chip. |
| TCPWM Flexibility | Five 16-bit timer/counter/PWM units with center-aligned, edge-aligned, and pseudo-random modulation - supports motor control, LED dimming, and encoder interfacing with minimal firmware overhead. |
Applications
| Industrial HMI Panels | Smart Home Sensors |
|---|---|
|
Use Scenario: Touch-enabled control panel for HVAC or PLC interface operating in factory environments with EMI and humidity. IC Role / Device Role / Timing Role: Primary MCU and CAPSENSE™ controller; manages touch scan, display update, and serial communication to host controller. Use Value: Hardware-based water tolerance and >5:1 SNR eliminate false touches during condensation; 2.5 µA Deep Sleep extends uptime between maintenance cycles. |
Use Scenario: Battery-powered occupancy/motion sensor with ambient light and temperature monitoring. IC Role / Device Role / Timing Role: System-on-chip sensor hub; acquires analog sensor data, processes motion via CAPSENSE™, and transmits via UART/I²C to gateway. Use Value: Integrated 12-bit SAR ADC and dual IDACs enable direct connection of thermistors and photodiodes; ultra-low Deep Sleep current achieves >5-year battery life. |
| Medical Wearables | Appliance User Interfaces |
|
Use Scenario: Contactless touch interface on portable glucose monitor or pulse oximeter with strict ESD and low-power requirements. IC Role / Device Role / Timing Role: CAPSENSE™ front-end and application processor; handles button emulation, data logging, and BLE interface coordination. Use Value: Dual low-power comparators operate in Deep Sleep to detect user interaction; integrated opamps buffer biopotential signals without external amplifiers. |
Use Scenario: Touch-control overlay on microwave oven or washing machine with splash resistance and EMI robustness. IC Role / Device Role / Timing Role: Dedicated touch controller and system manager; drives LCD segments, scans capacitive keys, and controls relay drivers via GPIO. Use Value: LCD segment drive capability on any GPIO reduces external driver IC count; SmartSense auto-tuning maintains responsiveness despite grease or moisture buildup. |
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 |
|---|---|---|---|
| CY8C4146AZI-S433 | Same core and analog features but in 40-pin QFN package (5 mm × 5 mm); lacks WCO pins and has fewer GPIOs (32 vs 36). | Preferred for space-constrained designs where crystal-less operation is acceptable and LCD driving is not required. | Select when board area is critical and external 32 kHz timing is unnecessary. |
| CY8C4247LQI-BL483 | Higher-performance variant: 80 MHz CPU, 256 KB flash, Bluetooth LE radio, same CAPSENSE™ engine and GPIO count. | Required for wireless-connected HMI or OTA-updatable devices; adds RF design complexity and higher power in active mode. | Choose when BLE connectivity and larger firmware footprint justify added cost and RF layout effort. |
Compared with CY8C4146LQI-S433T, CY8C4146AZI-S433 trades package size and WCO support for compactness, while CY8C4247LQI-BL483 adds wireless capability at the expense of power efficiency and design simplicity - making the S433T optimal for cost-sensitive, wired, low-power touch control.
Availability
CY8C4146LQI-S433T is available at Aetrix Electronics and suitable for industrial HMI panels, smart home sensors, and medical wearables requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for CY8C4146LQI-S433T 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 microcontrollers, with global manufacturing and quality certifications including ISO 9001 and IATF 16949.
The PSoC™ 4100S product line targets cost-optimized, low-power embedded control with integrated capacitive sensing - designed specifically for human-interface applications where reliability, ease of touch tuning, and minimal external components are essential.
FAQ
Does CY8C4146LQI-S433T support hardware-based CAPSENSE™ auto-tuning?
Yes. It includes SmartSense™ hardware acceleration for automatic CAPSENSE™ parameter adjustment during operation. This feature dynamically calibrates baseline, finger threshold, and noise thresholds without CPU intervention, ensuring consistent touch performance across environmental changes such as temperature drift or surface contamination.
What is the maximum operating frequency of the SAR ADC and its supported input modes?
The 12-bit SAR ADC operates at up to 1 Msps with differential and single-ended input configurations. It includes a 16-channel sequencer with hardware averaging (up to 64 samples per channel), enabling synchronized multi-sensor acquisition and noise reduction for precision analog measurements in noisy industrial environments.
Can the opamps in CY8C4146LQI-S433T drive external loads directly?
Yes. Each of the two continuous-time opamps supports high-drive external mode with up to 25 mA output current and rail-to-rail operation. This allows direct driving of LEDs, small solenoids, or analog front-end stages without external buffers - verified in Infineon's electrical specifications section 5.3.1.
Is the SWD debug interface accessible in all power modes?
Yes. The Serial Wire Debug (SWDCLK/SWDIO) interface remains active in all power modes except Hibernate. It supports full programming, breakpoint setting, and real-time variable inspection even during Deep Sleep with analog blocks active - confirmed in the device's system resources documentation (section 5.6.2).
CY8C4146LQI-S433T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100S
- 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, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, POR, PWM, WDT
- Number of I/O:
- 34
- 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-S433T FAQ
1.How can I place an order for CY8C4146LQI-S433T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQI-S433T 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-S433T reliable?
The price and inventory of CY8C4146LQI-S433T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQI-S433T is usually 5 days.
3.What payment methods are accepted for CY8C4146LQI-S433T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQI-S433T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQI-S433T?
CY8C4146LQI-S433T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQI-S433T 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-S433T?
For technical support, including CY8C4146LQI-S433T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQI-S433T requirements.
6.How does Aetrix verify that CY8C4146LQI-S433T is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQI-S433T 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-S433T meets industry standards.
7.What is the process for return or replacement of CY8C4146LQI-S433T?
All CY8C4146LQI-S433T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQI-S433T, 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-S433T part is unused and in its original packaging.
Return procedure for CY8C4146LQI-S433T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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