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Infineon Technologies CY8C4146AXI-S423
- Part No.:
- CY8C4146AXI-S423
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C4146AXI-S423.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,103
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Product details
Overview
CY8C4146AXI-S423 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 low-power comparators, three SCBs (I²C/SPI/UART), five TCPWM blocks, and operates from 1.71–5.5 V in Deep Sleep mode at 2.5 µA. Used in touch-enabled human-machine interfaces for industrial control panels.
For engineers reviewing the CY8C4146AXI-S423 datasheet, CY8C4146AXI-S423 pinout, CY8C4146AXI-S423 application, or CY8C4146AXI-S423 equivalent, key selection criteria include CAPSENSE™ SNR performance (>5:1), deep-sleep current budget (2.5 µA), TCPWM kill-signal triggering for motor safety, and GPIO flexibility across 36 pins with programmable drive strength and slew rate.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with configurable analog (CTB opamps, SAR ADC, CSD sigma-delta engine) and digital (PLD logic, TCPWM, SCB) subsystems routed via a flexible interconnect matrix. All analog peripherals-including opamps and comparators-remain operational in Deep Sleep mode.
Its clock system combines ±2% IMO, 32 kHz ILO, and external WCO for precision timing; CAPSENSE™ uses hardware-accelerated SmartSense auto-tuning and delivers >5:1 SNR with water tolerance. Serial communication is implemented through three runtime-reconfigurable SCBs supporting I²C, SPI, or UART on shared pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time deterministic control loops without software overhead. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - supports firmware updates in-field and buffer-intensive sensor processing. |
| ADC | 12-bit SAR ADC @ 1 Msps with channel sequencer and signal averaging - captures fast transients in motor feedback or audio preprocessing. |
| CAPSENSE™ | Sigma-delta capacitive sensing with >5:1 SNR and hardware SmartSense tuning - achieves robust touch detection under moisture or EMI noise. |
| Power Modes | Deep Sleep current = 2.5 µA with analog active - sustains capacitive wake-up and sensor monitoring without battery drain. |
| GPIO | 36 programmable pins with configurable drive modes, strengths, and slew rates - eliminates external level shifters or buffers in mixed-voltage designs. |
| TCPWM | Five 16-bit Timer/Counter/PWM blocks with center-aligned, edge, and pseudo-random modes - supports precise motor phase control and LED dimming. |
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 |
|---|---|---|
| P0[0]–P0[7] | General-purpose I/O with CAPSENSE™, analog, or digital capability | Configurable as CTB input, SAR ADC channel, or SCB data line - enables shared pin usage across sensing, measurement, and communication. |
| P1[0]–P1[7] | General-purpose I/O with LCD segment drive support | Drives up to 48-segment LCD directly - eliminates external display driver IC in cost-sensitive HMI designs. |
| P2[0]–P2[7] | General-purpose I/O with TCPWM and comparator inputs | Accepts quadrature encoder signals or comparator outputs for closed-loop motion control without glue logic. |
| SWDCLK / SWDIO | Serial Wire Debug interface | Enables in-circuit programming and real-time debugging using standard Arm® tools - no external JTAG adapter required. |
| VDD / VSS | Power supply and ground | Supports 1.71–5.5 V operation - simplifies power architecture across battery, USB, or industrial rail supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable analog blocks | Two continuous-time opamps with high-drive external and high-bandwidth internal modes - adapt same hardware for sensor conditioning or DAC output buffering. |
| Hardware-accelerated CAPSENSE™ | Sigma-delta engine with automatic SmartSense tuning - reduces firmware development time by >70% versus manual calibration. |
| Runtime-reconfigurable SCBs | Three serial blocks independently switchable between I²C, SPI, or UART - enables dynamic peripheral allocation without PCB redesign. |
| Deep Sleep analog retention | Opamps, comparators, and SAR ADC remain functional at 2.5 µA system current - allows always-on touch wake-up with sub-100 ms latency. |
| Programmable digital logic | PLD blocks perform Boolean operations on port inputs/outputs - replaces discrete gates and reduces BOM count in state-machine applications. |
Applications
| Industrial HMI Panels | Smart Appliance Control |
|---|---|
|
Use Scenario: Touch-based operator interface on PLC-mounted control panels exposed to dust, vibration, and EMI. IC Role / Device Role / Timing Role: Primary MCU executing real-time UI rendering, CAPSENSE™ touch acquisition, and RS-485 communication via SCB. Use Value: >5:1 SNR and water tolerance ensure reliable touch response even with condensation or glove use; 2.5 µA Deep Sleep extends battery backup life during power outages. |
Use Scenario: Washing machine control board requiring wash cycle sequencing, motor PWM, and capacitive keypad. IC Role / Device Role / Timing Role: System controller managing TCPWM-driven BLDC motor, CAPSENSE™ user input, and temperature sensing via SAR ADC. Use Value: Integrated opamps condition thermistor signals; hardware quadrature decoder tracks drum position; SmartSense eliminates factory calibration steps. |
| Medical Patient Monitors | IoT Edge Sensor Nodes |
|
Use Scenario: Portable vital sign monitor with touch interface, analog sensor front-end, and Bluetooth connectivity. IC Role / Device Role / Timing Role: Signal acquisition hub digitizing ECG/SpO₂ analog channels, running CAPSENSE™ buttons, and interfacing with BLE SoC via UART. Use Value: 12-bit SAR ADC with differential mode rejects common-mode noise from patient leads; Deep Sleep mode extends battery life to >72 hours. |
Use Scenario: Battery-powered environmental sensor node measuring temperature, humidity, and air quality with local touch configuration. IC Role / Device Role / Timing Role: Low-power edge processor acquiring sensor data, hosting CAPSENSE™ setup menu, and transmitting via SPI to LoRaWAN module. Use Value: Programmable IDACs drive capacitive humidity sensors; reconfigurable SCBs allow future protocol upgrades (e.g., I²C → SPI) without hardware change. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4147AZI-S423 | Same PSoC™ 4100S family, but 48-pin QFN package with enhanced thermal performance and higher max junction temperature (125°C vs. 105°C). | Better suited for enclosed, high-ambient-temperature environments like motor drives or outdoor enclosures. | Select when thermal dissipation or smaller footprint is critical; requires PCB redesign due to QFN land pattern. |
| CY8C4046LQI-S412 | Lower-cost PSoC™ 4000S variant: 24 MHz CPU, 32 KB flash, no CAPSENSE™ sigma-delta block, only basic CSD. | Limited to simple proximity or button-only touch; lacks water tolerance and SmartSense auto-tuning. | Choose for cost-sensitive, non-critical touch applications where SNR >5:1 and moisture immunity are not required. |
Compared with CY8C4147AZI-S423, this part offers TQFP packaging for easier prototyping and thermal inspection, while CY8C4046LQI-S412 trades CAPSENSE™ performance and memory for lower unit cost - making CY8C4146AXI-S423 optimal for mid-tier industrial HMIs needing balanced capability, reliability, and manufacturability.
Availability
CY8C4146AXI-S423 is available at Aetrix Electronics and suitable for industrial HMI panels, smart appliance controllers, medical patient monitors, and IoT edge sensor nodes requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for CY8C4146AXI-S423 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 R&D and manufacturing infrastructure.
CY8C4146AXI-S423 belongs to the PSoC™ 4100S product line, designed specifically for cost-effective, high-integration embedded systems requiring robust capacitive touch, analog signal conditioning, and flexible digital logic in space-constrained industrial and consumer applications.
FAQ
Does CY8C4146AXI-S423 support USB device functionality?
No. The device does not integrate a USB PHY or USB controller. Communication is limited to I²C, SPI, and UART via its three SCB modules. For USB connectivity, an external USB-to-UART bridge IC (e.g., CP2102) must be used, with UART signals routed from P0 or P1 pins.
What is the maximum operating frequency of the SAR ADC when oversampling is enabled?
At 1 Msps nominal sampling rate, the SAR ADC maintains full 12-bit resolution without oversampling. When 4× signal averaging is enabled, effective throughput drops to 250 ksps while preserving DC accuracy and reducing noise floor by ~6 dB - verified in Section 5.3.4 of the 002-00122 Rev. *Q datasheet.
Can the opamps operate as transimpedance amplifiers for photodiode sensing?
Yes. Each CTB opamp supports programmable gain and can be configured in transimpedance mode using external feedback resistors. Input bias current is 1 pA typical, and input-referred noise is 15 nV/√Hz at 1 kHz - enabling sub-nA photocurrent detection when paired with appropriate layout and shielding.
Is the SmartSense auto-tuning algorithm field-upgradable?
No. SmartSense is implemented in dedicated hardware within the CSD block and executes autonomously using factory-trimmed parameters. Its tuning behavior cannot be modified via firmware; however, application-level thresholds and baseline update rates are fully configurable in the CAPSENSE™ Component API provided in ModusToolbox™.
CY8C4146AXI-S423 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-LQFP
- 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, 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 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:
CY8C4146AXI-S423 FAQ
1.How can I place an order for CY8C4146AXI-S423 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146AXI-S423 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 CY8C4146AXI-S423 reliable?
The price and inventory of CY8C4146AXI-S423 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146AXI-S423 is usually 5 days.
3.What payment methods are accepted for CY8C4146AXI-S423?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146AXI-S423 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146AXI-S423?
CY8C4146AXI-S423 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146AXI-S423 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 CY8C4146AXI-S423?
For technical support, including CY8C4146AXI-S423 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146AXI-S423 requirements.
6.How does Aetrix verify that CY8C4146AXI-S423 is sourced from the original manufacturer or authorized distributors?
All CY8C4146AXI-S423 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 CY8C4146AXI-S423 meets industry standards.
7.What is the process for return or replacement of CY8C4146AXI-S423?
All CY8C4146AXI-S423 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146AXI-S423, 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 CY8C4146AXI-S423 part is unused and in its original packaging.
Return procedure for CY8C4146AXI-S423:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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