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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Infineon Technologies CY8C4146AXQ-S433

Name: CY8C4146AXQ-S433
Brand: Infineon Technologies
SKU: CY8C4146AXQ-S433
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY8C4146AXQ-S433

Manufacturer:: Infineon Technologies

Category:: Microcontrollers

Package:: 44-LQFP

Datasheet:: CY8C4146AXQ-S433.pdf

Description:: IC MCU 32BIT 64KB FLASH 44TQFP

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Product details

Overview

CY8C4146AXQ-S433 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, dual opamps, two IDACs, five TCPWM blocks, and three SCBs configurable as I²C/SPI/UART - deployed in human-machine interface (HMI) systems requiring robust touch control under moisture.

For engineers reviewing the CY8C4146AXQ-S433 datasheet, CY8C4146AXQ-S433 pinout, CY8C4146AXQ-S433 application, or CY8C4146AXQ-S433 equivalent, key selection considerations include deep-sleep current (2.5 µA), CAPSENSE™ SNR (>5:1), SmartSense auto-tuning capability, GPIO flexibility (36 pins, all CAPSENSE™-capable), and ModusToolbox™/PSoC™ Creator toolchain integration.

Technical Context

The device implements a tightly coupled subsystem where the Cortex®-M0+ core executes firmware while programmable analog blocks (CTB opamps, SAR ADC, CSD sigma-delta engine) and digital logic (TCPWM, SCB, PLD) operate concurrently under shared clock domains (IMO, ILO, WCO). All analog peripherals remain functional in Deep Sleep mode.

Its reconfigurable architecture enables runtime peripheral remapping: SCBs dynamically switch between I²C master/slave, SPI master/slave, or UART modes; TCPWM blocks support center-aligned PWM for motor control with comparator-triggered kill signals; and GPIO drive strength, slew rate, and analog/digital/CAPSENSE™ function are software-selectable per pin.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm® Cortex®-M0+ @ 48 MHz - single-cycle multiply enables real-time signal processing in HMI and sensor fusion tasks.
Memory	64 KB flash (with read accelerator) + 8 KB SRAM - sufficient for CAPSENSE™ firmware, communication stacks, and application logic without external memory.
Analog-to-Digital	12-bit SAR ADC @ 1 Msps with sequencer & averaging - supports multi-channel sensor acquisition with noise suppression in noisy industrial environments.
CAPSENSE™ Engine	Sigma-delta CSD with >5:1 SNR and water tolerance - enables reliable touch buttons/sliders on consumer appliances exposed to condensation or splashes.
Low-Power Operation	2.5 µA Deep Sleep current with active analog - allows battery-powered devices (e.g., smart remotes, wearables) to achieve multi-year operation on coin cells.
GPIO Flexibility	36 programmable pins, all supporting CAPSENSE™, analog, or digital functions - eliminates board redesign when migrating between touch, sensing, and control use cases.
Communication	3 × SCBs (I²C/SPI/UART reconfigurable) - simplifies interface consolidation across displays, sensors, and host MCUs without hardware changes.

Pinout & Package

This device is housed in a 48-lead TQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments support full system integration including SWD debug, VDD/VSS distribution, analog reference routing, and dedicated XRES reset input.

Pin/Terminal	Circuit Role	Design Meaning
P0[0]–P0[7]	General-purpose I/O with CAPSENSE™/analog/digital capability	Configurable as touch sense electrodes, ADC inputs, or digital control outputs - no fixed-function pin constraints.
P1[0]–P1[7]	General-purpose I/O with CAPSENSE™/analog/digital capability	Supports high-drive LCD segment drive or low-power comparator inputs - enables mixed-signal HMI subsystems on one chip.
P2[0]–P2[7]	General-purpose I/O with CAPSENSE™/analog/digital capability	Can route TCPWM outputs, SCB signals, or IDAC current sources - eliminates external glue logic for motor feedback or LED dimming.
P3[0]–P3[7]	General-purpose I/O with CAPSENSE™/analog/digital capability	Includes dedicated SWDIO/SWCLK pins for debugging - ensures non-intrusive firmware development and field updates.
XRES	Active-low reset input	Asynchronous hardware reset with internal pull-up - guarantees deterministic startup after power-on or brownout recovery.
VDD, VSS	Power supply and ground	Supports 1.71–5.5 V operation - allows direct connection to 3.3 V or 5 V rails without level-shifting components.

Key Features

Feature	Design Value
SmartSense Auto-Tuning	Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning of finger threshold and baseline drift - reduces firmware development time by ~40%.
Reconfigurable SCBs	Three serial blocks independently assignable to I²C, SPI, or UART at runtime - enables dynamic protocol switching for multi-sensor hubs without pin remapping.
Deep Sleep Analog Retention	Opamps, comparators, and SAR ADC remain operational during 2.5 µA Deep Sleep - supports wake-on-touch or wake-on-sensor-event with sub-100 µs latency.
Programmable Drive Modes	Each GPIO supports 12 drive strength options, slew rate control, and open-drain/push-pull configurations - prevents EMI in mixed-signal PCB layouts.
Capacitive Sigma-Delta (CSD)	Dedicated hardware block delivering >5:1 SNR and water tolerance - achieves Class A touch performance per IEC 61000-4-6 without shielding or guard rings.

Applications

Home Appliance Control Panel

Industrial HMI Terminal

Use Scenario: Touch-enabled oven/microwave control panel exposed to steam and cleaning agents.

IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing display backlight via PWM, and communicating with main controller over I²C.

Use Value: Water-tolerant sigma-delta sensing eliminates false triggers during condensation; 2.5 µA Deep Sleep extends battery backup duration during power outages.

Use Scenario: Ruggedized factory-floor operator terminal with metal bezel and glove operation.

IC Role / Device Role / Timing Role: System-on-chip handling touch decoding, LED status indicators, RS-485 interface (via SCB + transceiver), and watchdog supervision.

Use Value: Programmable GPIO drive strength ensures reliable signal integrity over long cables; TCPWM quadrature decoder supports encoder-based jog wheels.

Smart Thermostat Interface

Medical Device Keypad

Use Scenario: Wall-mounted HVAC controller with ambient light adaptive display and temperature compensation.

IC Role / Device Role / Timing Role: Sensor hub aggregating thermistor readings (SAR ADC), capacitive buttons, and ambient light data (IDAC-based photodiode bias).

Use Value: Integrated 12-bit SAR ADC with channel sequencer and averaging reduces external component count; SmartSense maintains button sensitivity across -20°C to +70°C.

Use Scenario: Portable diagnostic instrument requiring sterile, sealed front panel with tactile feedback.

IC Role / Device Role / Timing Role: Safety-critical touch controller validating user inputs before actuating solenoids or displays, with independent comparator-based fault detection.

Use Value: Dual low-power comparators operating in Deep Sleep enable immediate response to emergency stop commands; CAPSENSE™ meets IEC 60601-1 leakage current limits.

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable MCU applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY8C4046LQ-S412	Lower memory (32 KB flash / 4 KB SRAM); no SmartSense; 32-pin QFN package	Suitable for cost-sensitive, space-constrained designs with basic touch requirements	Select when CAPSENSE™ SNR >5:1 and auto-tuning are not required, and footprint must be minimized.
CY8C4247AZI-S423	Higher performance (48 MHz M0+, 128 KB flash, 16 KB SRAM); includes USBFS block; 68-pin QFN	Targeted at USB-connected HMI devices requiring firmware updates or HID-class interfaces	Select when USB connectivity, larger code space, or enhanced analog resources (e.g., additional opamps) are mandatory.

Compared with CY8C4146AXQ-S433, CY8C4046LQ-S412 trades CAPSENSE™ robustness and memory for lower BOM cost and smaller footprint, while CY8C4247AZI-S423 adds USB and memory headroom at the expense of larger package and higher unit price - making CY8C4146AXQ-S433 the optimal balance for mid-tier industrial and appliance HMIs.

Availability

CY8C4146AXQ-S433 is available at Aetrix Electronics and suitable for human-machine interface (HMI) panels, smart home controllers, and industrial operator terminals requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.

Supply support for CY8C4146AXQ-S433 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, sensing, and microcontroller solutions for industrial, automotive, and IoT applications.

CY8C4146AXQ-S433 belongs to the PSoC™ 4100S product line - designed specifically for cost-effective, high-reliability capacitive touch and mixed-signal control applications where programmability, low power, and design reuse are critical.

FAQ

Does CY8C4146AXQ-S433 support USB communication?

No. This part lacks a USB physical layer (PHY) or USBFS block. It supports only I²C, SPI, and UART via its three reconfigurable serial communication blocks (SCBs). For USB-capable variants, consider CY8C4247AZI-S423 or CY8C4248LQI-S492, which integrate USBFS peripherals and associated firmware libraries.

What debug interface does CY8C4146AXQ-S433 use?

It uses the standard 2-pin Serial Wire Debug (SWD) interface (SWDIO and SWCLK pins), compatible with Infineon's KitProg3, MiniProg4, and third-party Arm®-compliant debug probes. No JTAG support is provided - SWD offers identical functionality with reduced pin count and lower EMI.

Can all 36 GPIOs be used simultaneously for CAPSENSE™?

Yes - all GPIOs are CAPSENSE™-capable, but practical electrode count depends on scan time and SNR requirements. The CSD block supports up to 32 electrodes with full hardware acceleration; using more than 32 requires time-multiplexed scanning, increasing total frame time and potentially reducing update rate.

Is the 48 MHz CPU frequency achievable across the full 1.71–5.5 V supply range?

Yes. The internal main oscillator (IMO) delivers ±2% accuracy at 48 MHz across the entire specified voltage and temperature range (–40°C to +85°C), with no external crystal required. Frequency stability is maintained via internal regulation - enabling single-supply operation without clock source derating.

CY8C4146AXQ-S433 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Package/Case:: 44-LQFP

Series:: PSOC™ 4 CY8C4100S Plus

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Core Processor:: ARM® Cortex®-M0+

Core Size:: 32-Bit

Speed:: 48MHz

Connectivity:: I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART

Peripherals:: Brown-out Detect/Reset, CapSense, LCD, POR, PWM, WDT

Number of I/O:: 36

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, 20x12b SAR; D/A 2x7/8b

Oscillator Type:: External, Internal

Operating Temperature:: -40°C ~ 105°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

CY8C4146AXQ-S433 FAQ

1.How can I place an order for CY8C4146AXQ-S433 through Aetrix?

Please submit a Request for Quotation (RFQ) for CY8C4146AXQ-S433 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 CY8C4146AXQ-S433 reliable?

The price and inventory of CY8C4146AXQ-S433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146AXQ-S433 is usually 5 days.

3.What payment methods are accepted for CY8C4146AXQ-S433?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146AXQ-S433 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY8C4146AXQ-S433?

CY8C4146AXQ-S433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY8C4146AXQ-S433 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 CY8C4146AXQ-S433?

For technical support, including CY8C4146AXQ-S433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146AXQ-S433 requirements.

6.How does Aetrix verify that CY8C4146AXQ-S433 is sourced from the original manufacturer or authorized distributors?

All CY8C4146AXQ-S433 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 CY8C4146AXQ-S433 meets industry standards.

7.What is the process for return or replacement of CY8C4146AXQ-S433?

All CY8C4146AXQ-S433 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146AXQ-S433, 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 CY8C4146AXQ-S433 part is unused and in its original packaging.

Return procedure for CY8C4146AXQ-S433:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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