My Inquiry
My Account
Infineon Technologies CY8C4146LQI-S432T
- Part No.:
- CY8C4146LQI-S432T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQI-S432T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,741
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4146LQI-S432T 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, 12-bit 1-Msps SAR ADC, and three reconfigurable serial communication blocks (I²C/SPI/UART). It supports deep-sleep operation at 2.5 µA and delivers high-noise-immunity touch control for human-machine interface applications.
For engineers reviewing the CY8C4146LQI-S432T datasheet, CY8C4146LQI-S432T pinout, CY8C4146LQI-S432T application, or CY8C4146LQI-S432T equivalent, key selection considerations include its dual opamp + comparator analog subsystem, SmartSense auto-tuning for water-tolerant touch, TCPWM-based motor control kill signaling, and GPIO-flexible CAPSENSE™ channel allocation across 36 pins.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with programmable analog (CTB opamps, SAR ADC, CSD sigma-delta engine) and digital (TCPWM, SCB, PLD) resources, enabling hardware-level reconfiguration without FPGA-style toolchains. Its clock system combines ±2% IMO, 32 kHz ILO, and WCO for precision timing in low-power modes.
Analog signal chain flexibility includes opamp use as ADC input buffers or standalone comparators, IDACs configurable per-pin for CAPSENSE™ or current sourcing, and SAR ADC supporting differential acquisition with hardware averaging. The CSD block achieves >5:1 SNR and automatic hardware tuning via SmartSense.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time control loops and firmware-based sensor fusion without external co-processors. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - supports complex embedded applications with bootloader, secure firmware updates, and runtime data buffering. |
| ADC | 12-bit SAR ADC @ 1 Msps, differential/single-ended, sequencer with signal averaging - delivers precise analog measurement for battery monitoring or industrial sensing. |
| CAPSENSE™ | Sigma-delta CSD with >5:1 SNR and SmartSense auto-tuning - provides robust, water-tolerant touch detection on any GPIO without manual calibration. |
| Power | 1.71–5.5 V supply; Deep Sleep current = 2.5 µA with analog active - enables multi-year battery life in IoT endpoint devices with wake-on-touch capability. |
| GPIO | 36 programmable pins with configurable drive strength, slew rate, and CAPSENSE™/analog/digital roles - eliminates external level shifters and simplifies PCB routing. |
| Serial Interfaces | 3 × SCBs supporting I²C, SPI, or UART concurrently - allows simultaneous sensor bus, display interface, and debug port without resource contention. |
Pinout & Package
This device is packaged in a 44-lead TQFP (7 mm × 7 mm, 0.8 mm pitch) with exposed thermal pad. Pin functions are fully reconfigurable via firmware, including analog inputs, CAPSENSE™ electrodes, SCB signals, and TCPWM outputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Supports 1.71–5.5 V operation; VSS must be connected to low-impedance ground plane for analog integrity and CAPSENSE™ noise immunity. |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7], P4[0]–P4[3] | Programmable GPIO | All 36 pins support CAPSENSE™ electrode, analog input/output, or digital logic; each configurable for drive mode, slew rate, and interrupt capability. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up ensures reliable startup without external components unless debounced externally. |
| SWDIO / SWCLK | Debug interface | Two-pin Serial Wire Debug (SWD) interface enables programming, real-time tracing, and low-overhead firmware debugging without dedicated UART pins. |
| XTAL32K / XTAL32K_N | 32 kHz crystal oscillator terminals | Connects to external watch crystal for accurate RTC and low-power timer operation; optional bypass for internal ILO-only use. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning and maintains performance across temperature/humidity variations and electrode aging. |
| Reconfigurable SCBs | Three independent serial blocks dynamically assigned as I²C master/slave, SPI master/slave, or UART - reduces BOM count and design iterations. |
| TCPWM kill input | Comparator-triggered hardware kill signal disables PWM outputs within one clock cycle - critical for safe motor control and overcurrent protection. |
| Deep Sleep analog retention | Opamps, comparators, and CSD remain operational in Deep Sleep at 2.5 µA - enables continuous touch wake-up without full MCU wake. |
| Programmable CTB opamps | Two continuous-time opamps usable as ADC buffers, transimpedance amplifiers, or high-drive output stages - replaces discrete analog front-ends. |
Applications
| Home Appliance Control Panel | Industrial HMI Terminal |
|---|---|
Use Scenario: Touch-enabled oven control panel requiring water-resistant buttons and backlight dimming. IC Role / Device Role / Timing Role: CAPSENSE™ controller with SmartSense, TCPWM for LED dimming, and SCB for display interface. Use Value: Eliminates mechanical switches and external touch controllers; >5:1 SNR ensures reliable operation with wet fingers or condensation. |
Use Scenario: Ruggedized factory floor terminal with rotary encoder emulation and status LEDs. IC Role / Device Role / Timing Role: Quadrature decoder + TCPWM for LED pulse control + SCB for Modbus RTU communication. Use Value: Single-chip solution replaces microcontroller + dedicated encoder IC + LED driver, reducing board area and qualification effort. |
| Portable Medical Device UI | Battery-Powered Smart Lock |
Use Scenario: Handheld glucose meter with capacitive touch keys and low-power display backlight. IC Role / Device Role / Timing Role: Deep Sleep-capable CAPSENSE™ + SAR ADC for sensor reading + IDAC for precision current sourcing. Use Value: 2.5 µA Deep Sleep with active analog enables multi-month battery life while maintaining instant wake-on-touch responsiveness. |
Use Scenario: BLE-connected door lock with tamper detection and low-battery alert. IC Role / Device Role / Timing Role: CAPSENSE™ for keypad + SAR ADC for battery voltage monitoring + SCB for UART-to-BLE bridge. Use Value: Integrated analog front-end avoids external ADC and voltage reference, shrinking bill-of-materials and PCB footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller with integrated capacitive sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4046LQI-S412 | Same PSoC™ 4100S architecture but with 32 KB flash, 4 KB SRAM, and no SmartSense auto-tuning - requires manual CAPSENSE™ tuning. | Limited to simpler touch interfaces without environmental compensation; unsuitable for outdoor or high-humidity deployments. | Select when cost sensitivity outweighs need for adaptive touch performance and firmware memory headroom is constrained. |
| STM32G031F8P6 | Arm® Cortex®-M0+ MCU with 64 KB flash but no integrated CAPSENSE™ or programmable analog; requires external touch controller and opamp circuitry. | Demands additional BOM components and layout space for touch functionality; lacks hardware-accelerated sigma-delta sensing. | Choose only if existing STM32 toolchain familiarity and ecosystem integration outweigh benefits of single-chip analog/digital reconfigurability. |
Compared with CY8C4146LQI-S432T, CY8C4046LQI-S412 trades SmartSense and memory for lower unit cost, while STM32G031F8P6 shifts analog sensing complexity to external components - making the CY8C4146LQI-S432T optimal for rapid, robust touch-enabled product development with minimal external circuitry.
Availability
CY8C4146LQI-S432T is available at Aetrix Electronics and suitable for home appliance control panels, industrial HMI terminals, portable medical device UIs, and battery-powered smart locks requiring stable component supply and long-term production continuity.
Supply support for CY8C4146LQI-S432T 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 ICs, and embedded controllers, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949 standards.
CY8C4146LQI-S432T belongs to the PSoC™ 4100S 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
Does CY8C4146LQI-S432T support USB connectivity?
No, CY8C4146LQI-S432T does not include a USB PHY or controller. It relies on its three SCB modules for I²C, SPI, or UART communication. For USB host or device functionality, an external USB-to-UART bridge (e.g., CP2102N) or companion MCU with USB support is required.
Can the SAR ADC perform simultaneous sampling on multiple channels?
No, the 12-bit SAR ADC is single-channel with a hardware sequencer that cycles through up to 16 configured inputs. It does not support true simultaneous sampling; channel switching occurs at up to 1 Msps aggregate rate with programmable inter-channel delay.
Is the 44-lead TQFP package RoHS and REACH compliant?
Yes, CY8C4146LQI-S432T in 44LD TQFP packaging meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free matte tin finish and halogen-free molding compound as specified in Infineon's official compliance documentation.
What development tools are officially supported for firmware deployment?
Infineon officially supports ModusToolbox™ (v3.x+) and legacy PSoC™ Creator (v4.4) for firmware development, debugging, and programming. Both tools provide full access to PDL drivers, CAPSENSE™ Tuner, and TCPWM configuration GUIs - no third-party IDE patches or workarounds are needed.
CY8C4146LQI-S432T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-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:
- 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-S432T FAQ
1.How can I place an order for CY8C4146LQI-S432T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQI-S432T 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-S432T reliable?
The price and inventory of CY8C4146LQI-S432T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQI-S432T is usually 5 days.
3.What payment methods are accepted for CY8C4146LQI-S432T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQI-S432T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQI-S432T?
CY8C4146LQI-S432T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQI-S432T 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-S432T?
For technical support, including CY8C4146LQI-S432T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQI-S432T requirements.
6.How does Aetrix verify that CY8C4146LQI-S432T is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQI-S432T 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-S432T meets industry standards.
7.What is the process for return or replacement of CY8C4146LQI-S432T?
All CY8C4146LQI-S432T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQI-S432T, 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-S432T part is unused and in its original packaging.
Return procedure for CY8C4146LQI-S432T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4146LQI-S432T Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
