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Infineon Technologies CY8C4146LQS-S243T
- Part No.:
- CY8C4146LQS-S243T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQS-S243T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,567
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Product details
Overview
CY8C4146LQS-S243T from Infineon is an AEC-Q100 Grade-S (–40°C to +105°C) automotive-qualified PSoC™ 4100S Plus microcontroller featuring a 48-MHz Arm® Cortex®-M0+ CPU, 128 KB flash, 16 KB SRAM, and integrated CAPSENSE™ capacitive touch-sensing with SmartSense auto-tuning. It includes five reconfigurable serial communication blocks (I²C/SPI/UART/LIN), a CAN 2.0B controller with TTCAN support, and eight 16-bit TCPWM blocks - deployed in automotive body control modules requiring robust touch HMI and real-time bus communication.
For engineers reviewing the CY8C4146LQS-S243T datasheet, CY8C4146LQS-S243T pinout, CY8C4146LQS-S243T application, or CY8C4146LQS-S243T equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-die CAPSENSE™ SNR >5:1 under wet conditions, CAN 2.0B + TTCAN timing compliance, Deep Sleep current ≤2.5 µA with analog retention, and GPIO flexibility across 54 pins with programmable drive strength and slew rate.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ core executes firmware while programmable analog blocks (CTB opamps, SAR ADC, IDACs) and digital logic (Smart I/O, TCPWM) operate independently under hardware routing. Its clock system integrates a 4–33 MHz ECO, PLL for 48-MHz core clock, and low-power oscillators (WCO, ILO) enabling precise timing for CAN bit arbitration and CAPSENSE™ sigma-delta conversion.
Capacitive sensing is handled by a dedicated CSD block supporting differential scanning, automatic baseline calibration, and water-tolerant operation via hardware-accelerated signal averaging and noise rejection - all without CPU intervention. The CAN block supports time-triggered scheduling with configurable message objects and error counters compliant with ISO 11898-1:2015.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz - deterministic real-time execution with single-cycle GPIO access and NVIC-based interrupt handling. |
| Memory | 128 KB flash (with Read Accelerator) + 16 KB SRAM - sufficient for dual-bank OTA updates and CAPSENSE™+CAN+TCPWM concurrent firmware. |
| ADC | 12-bit SAR ADC, 1 Msps, differential mode - enables high-resolution battery voltage monitoring and motor phase current sampling. |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with SNR >5:1 and SmartSense auto-tuning - delivers reliable touch detection through glass up to 10 mm thick and under condensation. |
| CAN Interface | CAN 2.0B + TTCAN support - provides deterministic message scheduling, timestamping, and synchronization for distributed automotive ECUs. |
| Power Range | 1.71 V to 5.5 V supply - supports direct connection to 3.3 V or 5 V automotive domains without external regulators. |
| GPIO Count | 54 programmable pins - all support CAPSENSE™, analog input/output, or digital functions with configurable drive modes (20 mA sink/source). |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad - suitable for automotive PCBs requiring conduction cooling and IPC-7351B-compliant layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0 | I/O Power Supply | Supplies 1.71–5.5 V to Port 0–3 GPIOs; independent of core VDD for mixed-voltage interfacing. |
| VDDA | Analog Power | Dedicated 1.71–5.5 V supply for SAR ADC, opamps, and comparators - decoupling critical for <1 LSB INL error. |
| XTAL_IN / XTAL_OUT | External Crystal Oscillator | Connects to 4–33 MHz crystal for ECO; enables ±50 ppm timing accuracy required for CAN bit timing and LIN sync. |
| CAN_TX / CAN_RX | CAN Physical Layer Interface | Differential pair routed to external CAN transceiver (e.g., TJA1042); supports 1 Mbps nominal bit rate with TTCAN timestamp resolution ≤1 µs. |
| SWDCLK / SWDIO | ARM Serial Wire Debug | Two-pin debug interface for flash programming and real-time trace - compatible with MiniProg3 and industry-standard J-Link probes. |
Key Features
| Feature | Design Value |
|---|---|
| Deep Sleep Mode | 2.5 µA system current with opamps, comparators, and CSD block active - enables always-on touch wake-up with sub-100 ms response latency. |
| Smart I/O Logic | Programmable Boolean logic on GPIO inputs/outputs - implements hardware-debounced switches, pulse edge detection, or LED dimming without CPU cycles. |
| TTCAN Support | Hardware timestamping, schedule table loading, and synchronization via WCO - meets AUTOSAR COM timing requirements for gateway and domain controllers. |
| TRNG | True random number generator certified per NIST SP 800-90B - provides entropy source for secure boot key derivation and TLS session keys. |
| LCD Segment Drive | Up to 32 segments driven directly from GPIOs - eliminates external LCD driver IC in instrument cluster and HVAC display subsystems. |
Applications
| Automotive Door Module | Touch-Based HVAC Control |
|---|---|
Use Scenario: Centralized control of power windows, locks, mirrors, and ambient lighting via LIN/CAN network. IC Role / Device Role / Timing Role: Main MCU executing LIN slave protocol, driving window motor PWM, and managing CAPSENSE™ proximity wake-up. Use Value: Single-chip integration reduces BOM count by 3 components versus discrete MCU + LIN transceiver + touch controller; Deep Sleep current <3 µA extends battery-off duration. |
Use Scenario: Climate control panel with glass-covered touch sliders, rotary encoders, and segmented LCD display. IC Role / Device Role / Timing Role: CAPSENSE™ CSD block scans 12 buttons/sliders at 100 Hz; TCPWM drives LCD backplane; SCBs handle I²C sensor reads. Use Value: SmartSense auto-calibration maintains touch accuracy across –40°C to +105°C; integrated LCD drive eliminates external bias generator. |
| Electric Parking Brake (EPB) ECU | Body Control Module (BCM) Gateway |
Use Scenario: Safety-critical actuation of parking brake calipers with redundant position feedback and CAN diagnostics. IC Role / Device Role / Timing Role: Real-time CAN master node with TTCAN schedule, ADC monitoring motor current and hall sensor signals, and watchdog-managed fault recovery. Use Value: Hardware CRC and ECC on flash memory ensure ASIL-B compliance; CAN block supports error confinement and bus-off recovery within 50 ms. |
Use Scenario: Aggregation and translation of LIN, CAN, and SENT signals between body domain sensors and central gateway. IC Role / Device Role / Timing Role: Dual-CAN interface (one for chassis CAN, one for body CAN), SCB-based LIN slave, and SENT receiver for tire pressure sensors. Use Value: Five SCBs enable concurrent multi-protocol bridging without software overhead; GPIO remapping allows pin-compatible migration across PSoC™ 4100S Plus variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4147LQS-S473 | Same PSoC™ 4100S Plus family, but with 256 KB flash, 32 KB SRAM, and 64-pin TQFP package - no change in peripheral set or AEC-Q100 Grade-S rating. | Targeted at larger firmware images requiring bootloader + application partitioning or complex CAPSENSE™+CAN+BLE coexistence. | Select when firmware size exceeds 128 KB or board layout requires TQFP for manual reworkability. |
| SPC560P50L5 | 32-bit Power Architecture SPC560P MCU with 512 KB flash, 64 KB RAM, and dual CAN FD - lacks integrated CAPSENSE™ and programmable analog blocks. | Used in higher-tier powertrain and chassis applications requiring CAN FD bandwidth and ASIL-D functional safety certification. | Choose only if CAN FD >1 Mbps throughput or ISO 26262 ASIL-D certification is mandatory - not a drop-in replacement for touch-centric designs. |
Compared with CY8C4146LQS-S243T, CY8C4147LQS-S473 offers scalable memory in same-generation silicon, while SPC560P50L5 trades programmable analog flexibility for higher-speed CAN FD and safety certification - making the former ideal for cost-optimized body electronics and the latter for safety-critical powertrain gateways.
Availability
CY8C4146LQS-S243T is available at Aetrix Electronics and suitable for automotive door modules, touch-based HVAC controls, electric parking brake ECUs, and body control module gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY8C4146LQS-S243T 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 security solutions, with global R&D centers and ISO/TS 16949-certified wafer fabs.
CY8C4146LQS-S243T belongs to the PSoC™ 4100S Plus product line - engineered specifically for AEC-Q100-compliant automotive human-machine interfaces, body electronics, and distributed control units demanding integrated capacitive sensing, CAN, and ultra-low-power operation.
FAQ
Is CY8C4146LQS-S243T qualified for automotive use?
Yes. It is AEC-Q100 qualified to Grade-S (–40°C to +105°C), with full qualification test reports available from Infineon. This includes stress testing for temperature cycling, humidity bias, and ESD per AEC-Q100-002/006 standards - validated for under-hood and cabin-mounted automotive applications.
Does it support CAN FD or only classical CAN?
CY8C4146LQS-S243T supports only classical CAN 2.0B and time-triggered CAN (TTCAN) per ISO 11898-1:2015. It does not implement CAN FD physical layer or protocol extensions. For CAN FD, consider Infineon's AURIX™ TC3xx series or ST's SPC58x.
Can CAPSENSE™ operate during Deep Sleep mode?
Yes. The CSD block remains fully operational in Deep Sleep mode with 2.5 µA total system current. It supports automatic scan triggering via hardware timers or external interrupts, and results are stored in dedicated registers accessible upon wake-up - enabling true low-power touch wake-up capability.
What development tools are officially supported?
Infineon officially supports ModusToolbox™ (v3.x+) and legacy PSoC™ Creator v4.4 for firmware development. Hardware debugging uses MiniProg3 or KitProg3 programmers. The CY8CKIT-149 prototyping kit provides direct socket support for CY8C4146LQS-S243T in 48-pin QFN footprint.
CY8C4146LQS-S243T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 48MHz
- Connectivity:
- FIFO, I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, Temp Sensor, 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, 16x12b SAR; D/A 2x7b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4146LQS-S243T FAQ
1.How can I place an order for CY8C4146LQS-S243T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQS-S243T 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-S243T reliable?
The price and inventory of CY8C4146LQS-S243T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQS-S243T is usually 5 days.
3.What payment methods are accepted for CY8C4146LQS-S243T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQS-S243T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQS-S243T?
CY8C4146LQS-S243T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQS-S243T 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-S243T?
For technical support, including CY8C4146LQS-S243T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQS-S243T requirements.
6.How does Aetrix verify that CY8C4146LQS-S243T is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQS-S243T 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-S243T meets industry standards.
7.What is the process for return or replacement of CY8C4146LQS-S243T?
All CY8C4146LQS-S243T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQS-S243T, 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-S243T part is unused and in its original packaging.
Return procedure for CY8C4146LQS-S243T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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