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Infineon Technologies CY8C4146LQS-S423
- Part No.:
- CY8C4146LQS-S423
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQS-S423.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40UFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,900
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Product details
Overview
CY8C4146LQS-S423 from Infineon is an AEC-Q100 Grade 2 automotive-qualified 32-bit PSoC™ Automotive 4100S microcontroller featuring an Arm® Cortex®-M0+ CPU running at 48 MHz, 64 KB flash, 8 KB SRAM, and integrated CAPSENSE™ capacitive sensing with >5:1 SNR. It supports LIN slave, I²C/SPI/UART via reconfigurable SCBs, and operates from –40°C to +105°C in a 40-pin QFN package for body control modules and smart sensors.
For engineers reviewing the CY8C4146LQS-S422 datasheet, CY8C4146LQS-S423 pinout, CY8C4146LQS-S423 application, or CY8C4146LQS-S423 equivalent, key selection criteria include AEC-Q100 S-grade temperature rating, programmable analog (2 opamps, 12-bit SAR ADC), TCPWM kill-signal triggering for motor safety, and CAPSENSE™ water-tolerant touch interface design.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ core interfaces directly with configurable digital logic blocks (PLD-style UDBs) and analog resources including continuous-time opamps with Deep Sleep operation and a dedicated capacitance-sensing sigma-delta (CSD) block. All analog and digital peripherals are routed through a flexible interconnect matrix enabling runtime reconfiguration without hardware changes.
Its timing subsystem integrates five 16-bit TCPWM blocks supporting center-aligned PWM, comparator-triggered kill signals, and hardware-based dead-time insertion-critical for automotive motor control. The three serial communication blocks (SCBs) support concurrent I²C master/slave, SPI, UART, and LIN slave modes with independent clocking and DMA support.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz - deterministic real-time execution with Thumb-2 instruction set and NVIC for low-latency interrupt handling. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - sufficient for AUTOSAR-compliant boot code, sensor fusion algorithms, and LIN protocol stack. |
| Analog Peripherals | 12-bit 1-Msps SAR ADC (differential/single-ended), 2 opamps (Deep Sleep capable), 2 IDACs - enables simultaneous battery voltage monitoring, thermistor reading, and CAPSENSE™ electrode biasing. |
| Digital Peripherals | 5 × 16-bit TCPWM, 3 × SCB (I²C/SPI/UART/LIN), programmable logic (UDB) - supports multi-channel motor phase control, diagnostics bus, and custom glue logic without external ICs. |
| Capacitive Sensing | CAPSENSE™ CSD with >5:1 SNR and automatic hardware tuning - delivers robust touch detection under condensation or glove use in door handle or dashboard interfaces. |
| Operating Range | –40°C to +105°C (AEC-Q100 Grade 2), 1.71–5.5 V supply - qualified for under-hood and cabin-mounted automotive ECUs with wide input voltage tolerance. |
| Package | 40-pin QFN (6 × 6 mm, 0.5 mm pitch) - surface-mount compatible with automated assembly and thermal performance suitable for sealed enclosures. |
Pinout & Package
40-pin QFN (6 × 6 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant, moisture sensitivity level 3. Pin functions include GPIO, analog inputs/outputs, SCB signal pairs (SCL/SDA, MOSI/MISO/SCLK/SS), TCPWM outputs, CAPSENSE™ CSD electrodes, and dedicated reset (XRES) and SWD debug pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDD | Power supply rails | VDDA powers analog blocks (ADC, opamps); VDDD powers digital logic; separate rails reduce noise coupling in mixed-signal operation. |
| XRES | Active-low reset input | Asynchronous hardware reset with internal pull-up; accepts 1.2–5.5 V logic levels and supports external watchdog or power-monitor IC assertion. |
| P0[0]–P0[7], P1[0]–P1[7], P2[0]–P2[7], P3[0]–P3[7], P4[0]–P4[3] | Programmable GPIO | All pins support CAPSENSE™, analog input/output, digital I/O, and SCB/TCPWM alternate functions; drive strength and slew rate configurable per pin. |
| SWDIO / SWDCK | Debug interface | Two-pin Serial Wire Debug interface compliant with ARM CoreSight; enables non-intrusive firmware update and real-time trace during vehicle validation. |
| SCB0_SDA / SCB0_SCL | I²C interface | Configurable as I²C master/slave with programmable clock stretch and address masking - used for communication with EEPROM or ambient light sensor. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 2 qualification | Validated for automotive use up to +105°C ambient with full reliability testing (HTOL, TC, ESD, EMC), eliminating need for additional qualification effort in Tier-1 designs. |
| Programmable analog routing | Opamp outputs and ADC inputs can be connected to any GPIO via internal analog bus - enables flexible sensor signal conditioning without PCB layout changes. |
| CAPSENSE™ CSD with smart sensing | Hardware-accelerated auto-tuning adjusts baseline and threshold dynamically - reduces firmware overhead and improves false-touch immunity in humid environments. |
| Deep Sleep mode (2.5 µA) | Digital system current drops to 2.5 µA while retaining SRAM content and operating opamps/ADC - extends battery life in always-on vehicle entry systems. |
| Reconfigurable SCBs | Three independent serial blocks each support I²C, SPI, UART, or LIN slave on-the-fly via register writes - simplifies integration of diverse sensors and legacy vehicle networks. |
Applications
| Body Control Module | Smart Door Handle |
|---|---|
Use Scenario: Centralized control of power windows, locks, mirrors, and interior lighting in modern vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN gateway logic, PWM motor drivers, and analog sensor acquisition (door position, battery voltage). Use Value: Integrated TCPWM kill-signals prevent motor stall damage; CAPSENSE™ replaces mechanical switches for seamless handle activation. | Use Scenario: Capacitive touch interface embedded in vehicle door handles for passive entry and start (PEPS) systems. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ controller with water-tolerant CSD engine and low-power Deep Sleep wake-up on proximity detection. Use Value: >5:1 SNR ensures reliable operation under rain or condensation; 2.5 µA Deep Sleep extends standby time beyond 10 years on coin cell. |
| Climate Control Panel | Seat Position Sensor Interface |
Use Scenario: Touch-enabled HVAC control panel with backlight dimming, temperature feedback, and fan speed regulation. IC Role / Device Role / Timing Role: Human-machine interface MCU managing CAPSENSE™ buttons, LCD segment drive, and I²C communication with HVAC actuator ICs. Use Value: On-chip LCD drive eliminates external display driver; programmable opamps condition NTC thermistor signals without external amplifiers. | Use Scenario: Analog interface for potentiometric seat position sensors in power seat control units. IC Role / Device Role / Timing Role: Precision analog front-end with 12-bit SAR ADC, programmable gain opamps, and LIN slave communication to body domain controller. Use Value: Differential ADC mode rejects common-mode noise from high-current seat motors; IDACs enable ratiometric sensor excitation for drift-free position measurement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon CY8C4147LQI-S423 | Same core and peripheral set but in 48-pin QFN; adds 2 extra GPIO and 1 additional SCB channel. | Required when more serial interfaces or GPIOs are needed for multi-sensor clusters or dual-LIN gateways. | Select only if pin count and peripheral expansion justify larger footprint and cost premium. |
| NXP S32K144HAT0MLHT | ARM Cortex-M4F core, higher clock (112 MHz), CAN FD support, no integrated CAPSENSE™; requires external touch controller. | Suitable for powertrain or chassis domains needing CAN FD and floating-point math, not touch-centric body electronics. | Choose when CAN FD connectivity or DSP-intensive control loops outweigh CAPSENSE™ integration benefits. |
Compared with CY8C4146LQS-S423, CY8C4147LQI-S423 offers expanded I/O at higher cost and size, while S32K144HAT0MLHT provides CAN FD and M4F performance but lacks native capacitive sensing-making CY8C4146LQS-S423 optimal for cost-sensitive, touch-integrated automotive body ECUs.
Availability
CY8C4146LQS-S423 is available at Aetrix Electronics and suitable for automotive body control modules, smart door handles, climate control panels, and seat position sensor interfaces requiring stable component supply across production lifecycles.
Supply support for CY8C4146LQS-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 AG is a German semiconductor manufacturer specializing in power management, automotive MCUs, and security solutions, with global R&D and manufacturing infrastructure.
CY8C4146LQS-S423 belongs to the PSoC™ Automotive 4100S product line, designed specifically for AEC-Q100-compliant body electronics requiring integrated mixed-signal capability, capacitive touch, and functional safety-ready peripherals.
FAQ
Is CY8C4146LQS-S423 qualified for automotive use?
Yes. It is AEC-Q100 Grade 2 qualified (–40°C to +105°C), with full reliability test reports covering HTOL, temperature cycling, ESD (HBM ±2 kV), and EMC compliance per ISO 11452 and ISO 7637. Certification documentation is available through Infineon's official support portal.
Does it support CAN bus communication?
No. CY8C4146LQS-S423 does not include a CAN controller or physical layer. It supports LIN slave, I²C, SPI, and UART via its three reconfigurable SCBs. For CAN-based systems, pairing with a discrete CAN transceiver (e.g., TJA1043) and software protocol stack is required.
What development tools are supported?
ModusToolbox™ 3.x is the official IDE, providing PDL-based APIs, configurator GUI for peripheral setup, and debug support via KitProg3. Hardware evaluation is enabled by the CY8CKIT-044 PSoC™ 4100S Pioneer Kit, which includes onboard CAPSENSE™ sliders, LIN transceiver, and Arduino-compatible headers.
Can the internal opamps drive external loads directly?
Yes - each opamp supports up to 25 mA output current in high-drive external mode and can buffer ADC inputs or drive small actuators like piezo buzzers. Output swing is rail-to-rail, and gain configuration is programmable via firmware using the Opamp_PDL API.
CY8C4146LQS-S423 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100S Plus
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- 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, LVD, 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 16x10/12x12b SAR; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4146LQS-S423 FAQ
1.How can I place an order for CY8C4146LQS-S423 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQS-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 CY8C4146LQS-S423 reliable?
The price and inventory of CY8C4146LQS-S423 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQS-S423 is usually 5 days.
3.What payment methods are accepted for CY8C4146LQS-S423?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQS-S423 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQS-S423?
CY8C4146LQS-S423 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQS-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 CY8C4146LQS-S423?
For technical support, including CY8C4146LQS-S423 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQS-S423 requirements.
6.How does Aetrix verify that CY8C4146LQS-S423 is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQS-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 CY8C4146LQS-S423 meets industry standards.
7.What is the process for return or replacement of CY8C4146LQS-S423?
All CY8C4146LQS-S423 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQS-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 CY8C4146LQS-S423 part is unused and in its original packaging.
Return procedure for CY8C4146LQS-S423:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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