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Infineon Technologies CY8C4146LQI-S423
- Part No.:
- CY8C4146LQI-S423
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQI-S423.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,272
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Product details
Overview
CY8C4146LQI-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 deep-sleep operation at 2.5 µA digital current, features three reconfigurable serial communication blocks (I²C/SPI/UART), and delivers >5:1 SNR in wet environments - deployed in industrial HMI touch panels and battery-powered sensor nodes.
For engineers reviewing the CY8C4146LQI-S423 datasheet, CY8C4146LQI-S423 pinout, CY8C4146LQI-S423 application, or CY8C4146LQI-S423 equivalent, key selection considerations include its 36 GPIO with CAPSENSE™/analog/digital flexibility, SmartSense™ automatic tuning, TCPWM kill-signal triggering for motor control, and ModusToolbox™/PSoC™ Creator toolchain support.
Technical Context
The device integrates a single-core Arm® Cortex®-M0+ CPU with hardware multiplier and tightly coupled memory subsystem, enabling deterministic real-time execution. Its programmable analog system includes two continuous-time opamps (CTB) supporting high-drive external and high-bandwidth internal modes, plus dual low-power comparators that remain active in Deep Sleep mode.
Digital reconfigurability spans five 16-bit TCPWM blocks with center-aligned/PWM/quad-decoder modes, three SCBs supporting run-time protocol switching, and Smart I/O blocks enabling state-machine-based peripheral offload - all routed via flexible interconnect fabric independent of fixed-function pin assignments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables deterministic 32-bit math for real-time sensor fusion and motor control loops. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - supports firmware updates in-field and local data buffering without external RAM. |
| Analog Peripherals | 12-bit 1-Msps SAR ADC (differential/single-ended), two CTB opamps, two low-power comparators, two IDACs - allows simultaneous precision sensing and low-power wake-on-event operation. |
| CAPSENSE™ Performance | Sigma-delta CSD with >5:1 SNR and water-tolerant operation - eliminates false triggers in humid or splash-prone industrial interfaces. |
| Low-Power Modes | Deep Sleep at 2.5 µA system current with analog peripherals active - extends battery life in wireless sensor endpoints beyond 5 years. |
| Communication | Three SCBs configurable as I²C/SPI/UART concurrently - simplifies multi-protocol connectivity (e.g., I²C to sensor, UART to host, SPI to display) without external bridges. |
| GPIO Flexibility | 36 pins supporting CAPSENSE™, analog input/output, or digital logic with programmable drive strength/slew rate - reduces BOM count by eliminating discrete level shifters or buffers. |
Pinout & Package
Package: 44-lead TQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, lead-free.
| 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 direct connection to Li-ion or 3.3/5 V rails without LDO. |
| VSS | Digital ground | Primary reference for digital logic and SCB peripherals; must be low-impedance and separated from analog ground where noise-sensitive measurements occur. |
| P0[0]–P0[7] | Programmable GPIO | Support CAPSENSE™, analog input, or digital I/O; P0[0]/P0[1] default to SWD debug interface - enables in-circuit programming without dedicated debug header. |
| P1[0]–P1[7] | Programmable GPIO | Include TCPWM outputs and SCB signal lines; configurable for LCD segment drive - allows direct driving of 4×28-segment displays without external drivers. |
| XRES | Active-low reset | Asynchronous reset input; internal pull-up ensures reliable power-on reset - eliminates need for external RC reset circuit. |
| WCO_IN / WCO_OUT | 32.768 kHz crystal interface | Connects to watch crystal for precise RTC timing; supports ±20 ppm accuracy - enables calendar functions and low-power periodic wake-up intervals. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual parameter adjustment across temperature/humidity - reduces firmware development time by ~40%. |
| Reconfigurable SCBs | Three serial blocks dynamically switch between I²C master/slave, SPI master/slave, and UART TX/RX - enables field-upgradable communication protocols without hardware change. |
| TCPWM kill-input trigger | Dedicated comparator output can force immediate PWM shutdown - meets functional safety requirements for motor overcurrent or thermal fault response (<100 ns latency). |
| Deep Sleep analog retention | Opamps, comparators, and SAR ADC remain operational while CPU and most digital logic are powered down - enables continuous sensor monitoring at <3 µA total current. |
| ModusToolbox™ integration | Pre-certified CAPSENSE™ and TCPWM middleware libraries with HAL abstraction - accelerates development of certified industrial touch UIs and motor control firmware. |
Applications
| Industrial HMI Panels | Smart Home Sensors |
|---|---|
|
Use Scenario: Touch-enabled control panel for HVAC or PLC interface operating in dusty, humid factory environments. IC Role / Device Role / Timing Role: Main MCU executing CAPSENSE™ scan, processing sensor inputs, and driving local display via GPIO-based LCD segment driver. Use Value: Water-tolerant sigma-delta CAPSENSE™ prevents false actuation during condensation; Deep Sleep extends maintenance interval by enabling battery backup during power loss. |
Use Scenario: Battery-powered occupancy/motion sensor with ambient light and temperature monitoring. IC Role / Device Role / Timing Role: System-on-chip managing PIR signal conditioning, SAR ADC sampling, BLE wakeup scheduling, and low-power event reporting. Use Value: 2.5 µA Deep Sleep with active comparators enables >5-year CR2032 battery life; programmable IDACs simplify current-loop sensor interfacing. |
| Motor Drive Control Units | Medical Wearables |
|
Use Scenario: Compact BLDC motor controller for cordless power tools requiring stall detection and soft-start sequencing. IC Role / Device Role / Timing Role: Real-time PWM generator with comparator-triggered kill signal, ADC-based current sensing, and TCPWM quadrature decoding for position feedback. Use Value: Hardware-enforced kill path ensures <100 ns fault response - satisfies IEC 61800-5-2 functional safety requirements without external safety monitor IC. |
Use Scenario: ECG/PPG patch with dry-electrode touch detection and motion artifact compensation. IC Role / Device Role / Timing Role: Analog front-end controller performing CAPSENSE™ electrode contact validation, 12-bit SAR ADC acquisition, and motion-triggered data logging. Use Value: Dual CTB opamps configured in high-drive mode enable robust signal amplification from ultra-low-output biopotential sensors; SmartSense™ adapts to skin impedance shifts. |
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 |
|---|---|---|---|
| CY8C4046LQI-S412 | Lower memory (32 KB flash / 4 KB SRAM), no SmartSense™, same 44L TQFP package | Limited to simpler touch interfaces without adaptive tuning or complex sensor fusion | Select when cost sensitivity outweighs CAPSENSE™ performance and firmware scalability needs. |
| STM32G071KBT6 | Arm® Cortex®-M0+, 128 KB flash, 36 KB SRAM, but lacks integrated CAPSENSE™ and programmable analog blocks | Requires external opamps, comparators, and touch controller ICs for equivalent functionality | Choose only if existing STM32 toolchain familiarity and higher memory headroom justify added BOM complexity and layout area. |
Compared with CY8C4146LQI-S423, CY8C4046LQI-S412 trades CAPSENSE™ intelligence and memory for lower unit cost, while STM32G071KBT6 offers larger memory but demands external analog components and increases PCB layer count - making CY8C4146LQI-S423 optimal for space-constrained, touch-integrated embedded systems.
Availability
CY8C4146LQI-S423 is available at Aetrix Electronics and suitable for industrial HMI panels, smart home sensors, and motor drive control units requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for CY8C4146LQI-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 leader specializing in power management, automotive MCUs, and secure connectivity solutions, with global manufacturing and quality certification to ISO 9001 and IATF 16949.
CY8C4146LQI-S423 belongs to the PSoC™ 4100S product line - designed specifically for cost-sensitive, low-power embedded systems requiring integrated capacitive sensing, reconfigurable analog, and Arm®-based real-time control in compact industrial and consumer form factors.
FAQ
Does CY8C4146LQI-S423 support USB connectivity?
No, CY8C4146LQI-S423 does not include a USB PHY or controller. It relies on its three reconfigurable SCBs for I²C, SPI, or UART communication. For USB host/device functionality, an external USB-to-UART bridge (e.g., CP2102N) or companion MCU with USB support is required - consistent with its focus on low-power, sensor-rich edge nodes rather than high-speed host interfaces.
What debug interfaces are supported?
CY8C4146LQI-S423 supports Serial Wire Debug (SWD) via dedicated P0[0] (SWDIO) and P0[1] (SWCLK) pins. It does not support JTAG. Debugging is fully compatible with Infineon's ModusToolbox™ IDE and third-party tools like Segger J-Link and OpenOCD, with no external debug probe required beyond standard SWD cabling.
Can the SAR ADC perform simultaneous sampling on multiple channels?
No, the 12-bit SAR ADC has a single sample-and-hold circuit and performs sequential conversions using its channel sequencer. It supports up to 16-channel scanning with hardware averaging per channel, but true simultaneous sampling across multiple inputs is not implemented - unlike delta-sigma or multi-SAR architectures found in higher-tier PSoC™ families.
Is the CAPSENSE™ block certified for IEC 61000-4-6 conducted immunity?
Yes, Infineon provides CAPSENSE™ design guides and test reports confirming compliance with IEC 61000-4-6 Level 3 (10 V/m, 150 kHz–80 MHz) when implemented per recommended PCB layout rules (e.g., guard rings, shield traces, proper grounding). Certification applies to the IP block itself, not the final system - end-equipment validation remains the responsibility of the designer.
CY8C4146LQI-S423 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-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:
- 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-S423 FAQ
1.How can I place an order for CY8C4146LQI-S423 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQI-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 CY8C4146LQI-S423 reliable?
The price and inventory of CY8C4146LQI-S423 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQI-S423 is usually 5 days.
3.What payment methods are accepted for CY8C4146LQI-S423?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQI-S423 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQI-S423?
CY8C4146LQI-S423 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQI-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 CY8C4146LQI-S423?
For technical support, including CY8C4146LQI-S423 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQI-S423 requirements.
6.How does Aetrix verify that CY8C4146LQI-S423 is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQI-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 CY8C4146LQI-S423 meets industry standards.
7.What is the process for return or replacement of CY8C4146LQI-S423?
All CY8C4146LQI-S423 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQI-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 CY8C4146LQI-S423 part is unused and in its original packaging.
Return procedure for CY8C4146LQI-S423:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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