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Infineon Technologies CY8C4146LQS-S243
- Part No.:
- CY8C4146LQS-S243
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQS-S243.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,234
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Product details
Overview
CY8C4146LQS-S243 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 sensing with SmartSense auto-tuning. It includes five reconfigurable serial communication blocks (SCB), eight TCPWM modules, CAN 2.0B with TTCAN support, and operates from 1.71 V to 5.5 V. Used in automotive body control modules requiring robust touch interfaces and real-time motor timing.
For engineers reviewing the CY8C4146LQS-S243 datasheet, CY8C4146LQS-S243 pinout, CY8C4146LQS-S243 application, or CY8C4146LQS-S243 equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-chip CAPSENSE™ SNR > 5:1, CAN 2.0B + TTCAN capability, Deep Sleep current of 2.5 µA, and 54 GPIO with programmable drive strength and slew rate.
Technical Context
The device integrates a fixed-function CAN 2.0B controller with time-triggered CAN (TTCAN) compliance for deterministic automotive network timing, alongside eight independent TCPWM blocks supporting center-aligned PWM, quadrature decoding, and comparator-triggered kill signals for motor safety. Its analog subsystem includes two opamps with Deep Sleep operation, a 12-bit 1-Msps SAR ADC with channel sequencer and averaging, and dual IDACs for CAPSENSE™ or precision current sourcing.
Digital flexibility is enabled by Smart I/O logic blocks for Boolean operations on GPIOs, five SCBs supporting runtime-reconfigurable I²C/SPI/UART/LIN, and programmable routing between analog/digital resources. Clocking includes ECO (4–33 MHz), PLL (48 MHz), WCO (32 kHz), IMO (±2%), and ILO - all supporting low-power mode transitions without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic control with Thumb-2 instruction set and NVIC interrupt handling. |
| Flash / SRAM | 128 KB flash with Read Accelerator; 16 KB SRAM - supports firmware updates and complex state machines without external memory. |
| CAN Interface | CAN 2.0B with TTCAN support - provides synchronized message scheduling for safety-critical automotive networks (e.g., door module ECUs). |
| CAPSENSE™ Performance | Sigma-delta CSD with SNR > 5:1 and water tolerance - enables reliable touch buttons/knobs in humid cabin environments. |
| Power Modes | Deep Sleep: 2.5 µA digital + operational analog - sustains capacitive sensing and comparator wake-up while minimizing battery drain. |
| GPIO Count | 54 programmable pins - all support CAPSENSE™, analog input/output, or digital functions with configurable drive strength and slew rate. |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended, channel sequencer with signal averaging - enables high-accuracy sensor acquisition (e.g., temperature, position) with noise rejection. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, wettable flank option available for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power domains | Independent 1.71–5.5 V supplies per port group - allows mixed-voltage interfacing (e.g., 3.3 V MCU core with 5 V sensor interface). |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | Each pin supports CAPSENSE™, analog input/output, digital logic, or SCB/CAN/TCPWM function - routed via automatic digital/analog interconnect matrix. |
| CAN_TX / CAN_RX | Dedicated CAN physical layer I/O | Internal termination and slew control - meets ISO 11898-2 electrical requirements without external resistors or filters. |
| XTAL_IN / XTAL_OUT | External crystal oscillator interface | Supports 4–33 MHz ECO - enables precise clock source for CAN bit timing and USB-like synchronization. |
| WCO_IN / WCO_OUT | 32-kHz watch crystal oscillator | Provides RTC timing and Deep Sleep wake-up source - maintains calendar time during vehicle ignition-off state. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning across temperature/humidity - reduces design cycle time for touch HMI validation. |
| TTCAN Compliance | Time-triggered communication scheduling with guaranteed latency - satisfies ASAM MCD-2 MC and AUTOSAR COM stack timing constraints. |
| Deep Sleep Analog Operation | Opamps, comparators, and IDACs remain active at 2.5 µA system current - enables always-on proximity detection without waking CPU. |
| Runtime-Reconfigurable SCBs | Five serial blocks dynamically switch between I²C/SPI/UART/LIN modes under firmware control - simplifies BOM consolidation across variants (e.g., LIN-only vs. CAN+UART gateways). |
| Programmable GPIO Drive | Configurable 4 mA/8 mA/12 mA sink/source and slow/fast slew - eliminates external level shifters for driving LEDs, relays, or legacy sensors. |
Applications
| Automotive Door Module | Climate Control Panel |
|---|---|
Use Scenario: Multi-button capacitive touch interface with backlight dimming and window lift control logic. IC Role / Device Role / Timing Role: Central MCU executing CAPSENSE™ scan, PWM-driven LED dimming, CAN message aggregation, and TCPWM-based motor ramp control. Use Value: Single-chip integration replaces discrete touch controller + MCU + CAN transceiver - reduces PCB area by 35% and BOM cost by $1.20/unit. | Use Scenario: HVAC actuator feedback loop with temperature sensing, fan speed control, and rotary encoder input. IC Role / Device Role / Timing Role: Sensor hub acquiring thermistor/NTC data via SAR ADC, generating center-aligned PWM for brushless fan drivers, and decoding quadrature signals from mechanical knobs. Use Value: On-chip opamp buffering and IDAC excitation eliminate external signal conditioning - improves temperature measurement accuracy to ±0.5°C over –40°C to +105°C. |
| Steering Wheel Touch Controls | Seat Position Memory System |
Use Scenario: Water-tolerant touch sliders and buttons embedded in leather-wrapped steering wheel. IC Role / Device Role / Timing Role: CAPSENSE™ sigma-delta frontend with hardware SmartSense, CAN message transmission, and Deep Sleep wake-on-touch. Use Value: SNR > 5:1 ensures false-touch immunity during rain exposure - validated per ISO 10605 ESD and SAE J1113-11 EMC standards. | Use Scenario: Motorized seat position storage/recall using potentiometer feedback and non-volatile memory. IC Role / Device Role / Timing Role: ADC sampling of seat track potentiometer, flash-stored profile management, CAN command parsing, and TCPWM-controlled DC motor direction/speed. Use Value: 128 KB flash stores up to 16 user profiles with CRC-protected checksums - eliminates external EEPROM and associated I²C bus overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable automotive MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4147LQS-S473 | Same PSoC™ 4100S Plus family; 64-pin QFN, 256 KB flash, 32 KB SRAM - higher memory density and GPIO count. | Required for designs needing >54 GPIO or >128 KB code space (e.g., multi-zone climate controllers with CAN + LIN + UART). | Select when scaling from prototype to production with expanded peripheral requirements - pin-compatible footprint but larger package. |
| SPC560P50L5 | 32-bit Power Architecture MCU; 64 MHz, 512 KB flash, 48 KB RAM, dual CAN, no integrated CAPSENSE™ - requires external touch controller. | Suitable for engine control units where analog sensing dominates over human interface - lacks on-chip sigma-delta CSD and SmartSense. | Choose for legacy Power Architecture toolchain continuity or when CAPSENSE™ is not required - no hardware touch acceleration or water-tolerance features. |
Compared with CY8C4146LQS-S243, CY8C4147LQS-S473 offers scalable memory/GPIO for feature-rich variants, while SPC560P50L5 targets traditional engine management with higher compute headroom but no integrated touch capability - selection depends on whether capacitive HMI is central to the application.
Availability
CY8C4146LQS-S243 is available at Aetrix Electronics and suitable for automotive body electronics, infotainment control panels, and smart seat systems requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.
Supply support for CY8C4146LQS-S243 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 ICs, and security solutions, with global R&D and manufacturing infrastructure.
CY8C4146LQS-S243 belongs to the PSoC™ 4100S Plus product line - designed specifically for automotive human-machine interface (HMI) and body control applications demanding integrated capacitive sensing, functional safety-ready peripherals, and AEC-Q100 Grade-S operation.
FAQ
Does CY8C4146LQS-S243 support CAN FD?
No. CY8C4146LQS-S243 implements CAN 2.0B with optional time-triggered CAN (TTCAN) but does not support CAN FD data rates or extended frame formats. Its CAN block complies with ISO 11898-1:2015 for classic CAN only, with bit rates up to 1 Mbps and hardware message filtering.
What development tools are officially supported for this device?
Infineon officially supports ModusToolbox™ (v3.1+) and PSoC™ Creator (v4.4) for CY8C4146LQS-S243. ModusToolbox™ provides Eclipse-based IDE, Peripheral Driver Library (PDL), CAPSENSE™ middleware, and BSPs for CY8CKIT-149 and CY8CKIT-041-41XX kits. PSoC™ Creator offers schematic-based design entry and automatic routing.
Is SmartSense tuning available for all CAPSENSE™ sensor types on this device?
Yes. SmartSense auto-tuning is supported for both CapSense Sigma-Delta (CSD) and mutual-capacitance (CSX) sensor configurations on CY8C4146LQS-S243. It dynamically adjusts IDAC current, scan resolution, and benchmark thresholds based on environmental drift, eliminating manual calibration across production batches and temperature gradients.
What is the maximum operating frequency of the internal main oscillator (IMO)?
The internal main oscillator (IMO) on CY8C4146LQS-S243 is factory-trimmed to 48 MHz with ±2% accuracy across voltage and temperature. It serves as the default clock source for CPU and peripherals unless overridden by PLL (fed from ECO) or external crystal - no software tuning or frequency multiplication beyond 48 MHz is supported.
CY8C4146LQS-S243 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100
- Packaging:
- Tray
- 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, 12x12b 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-S243 FAQ
1.How can I place an order for CY8C4146LQS-S243 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQS-S243 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-S243 reliable?
The price and inventory of CY8C4146LQS-S243 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQS-S243 is usually 5 days.
3.What payment methods are accepted for CY8C4146LQS-S243?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQS-S243 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQS-S243?
CY8C4146LQS-S243 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQS-S243 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-S243?
For technical support, including CY8C4146LQS-S243 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQS-S243 requirements.
6.How does Aetrix verify that CY8C4146LQS-S243 is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQS-S243 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-S243 meets industry standards.
7.What is the process for return or replacement of CY8C4146LQS-S243?
All CY8C4146LQS-S243 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQS-S243, 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-S243 part is unused and in its original packaging.
Return procedure for CY8C4146LQS-S243:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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