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Infineon Technologies CY8C4146LQA-S243
- Part No.:
- CY8C4146LQA-S243
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQA-S243.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,797
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Product details
Overview
CY8C4146LQA-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 (I²C/SPI/UART/LIN), a CAN 2.0B controller with TTCAN support, and eight 16-bit TCPWM blocks-enabling motor control, touch HMI, and body electronics in automotive ECUs.
For engineers reviewing the CY8C4146LQA-S243 datasheet, CY8C4146LQA-S243 pinout, CY8C4146LQA-S243 application, or CY8C4146LQA-S243 equivalent, key selection criteria include its 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 modes for mixed-signal automotive designs.
Technical Context
The device integrates a fixed-function CAN 2.0B block with time-triggered operation (TTCAN) support, enabling deterministic communication in safety-critical vehicle networks. Its clock system combines a 4–33 MHz ECO, 32-kHz WCO, ±2% IMO, and ILO to feed a PLL generating the precise 48-MHz CPU clock.
Programmable analog resources include two opamps supporting ADC input buffering and comparator modes, a 12-bit 1-Msps SAR ADC with channel sequencer and averaging, and dual IDACs usable for CAPSENSE™ or general-purpose current sourcing-all operational in Deep Sleep mode at 2.5 µA system current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - delivers real-time deterministic execution for automotive control loops. |
| Flash / SRAM | 128 KB flash with Read Accelerator / 16 KB SRAM - supports secure bootloader, OTA updates, and multi-tasking firmware. |
| CAN Interface | CAN 2.0B with TTCAN - enables synchronized message scheduling for ASAM MCD-2 MC-compliant diagnostics and gateway timing. |
| CAPSENSE™ Performance | Sigma-delta CSD with SNR > 5:1 and water tolerance - meets ISO 12405-3 touch robustness requirements in wet cabin environments. |
| Low-Power Operation | Deep Sleep current = 2.5 µA with analog active - sustains battery-powered always-on functions like door handle proximity detection. |
| GPIO Count & Flexibility | 54 programmable pins, any pin supports CAPSENSE™, analog, or digital - eliminates external routing logic in compact ECU layouts. |
| Serial Peripherals | 5 × SCBs (I²C/SPI/UART/LIN) - allows concurrent LIN body control, SPI sensor interface, and I²C EEPROM access without resource contention. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power domains | Independent 1.71–5.5 V supplies per port group enable mixed-voltage interfacing (e.g., 3.3 V MCU core + 5 V analog sensors). |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | All 54 pins support CAPSENSE™, analog input/output, or digital logic with configurable slew rate and drive strength (up to 25 mA sink/source). |
| CAN_TX / CAN_RX | Dedicated CAN physical layer interface | Hardwired to internal CAN controller; requires external CAN transceiver (e.g., TJA1042) for bus compliance and fault protection. |
| XTAL_IN / XTAL_OUT | External crystal oscillator terminals | Supports 4–33 MHz ECO for high-accuracy timing; essential for CAN bit timing stability and TTCAN synchronization. |
| WCO_IN / WCO_OUT | 32-kHz watch crystal oscillator | Provides low-power RTC and wake-up timing independent of main clock domain during Deep Sleep. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning across temperature/humidity - reduces production test time by >70%. |
| Programmable Analog Blocks | Two opamps + 12-bit SAR ADC + dual IDACs on chip - replaces discrete signal-conditioning circuitry for current-loop sensors or resistive touch. |
| TTCAN Support | Time-triggered scheduling within CAN 2.0B frame - enables deterministic message transmission for functional safety (ISO 26262 ASIL-B) applications. |
| Deep Sleep with Active Analog | 2.5 µA system current while opamps, comparators, and IDACs remain operational - enables ultra-low-power occupancy detection or battery monitoring. |
| Reconfigurable SCBs | Five serial blocks dynamically assignable as I²C master/slave, SPI master/slave, UART, or LIN slave - simplifies BOM consolidation across variant ECUs. |
Applications
| Body Control Module (BCM) | Door Handle Touch Interface |
|---|---|
Use Scenario: Centralized control of lighting, window lifts, mirror adjustment, and seat position memory in passenger vehicles. IC Role / Device Role / Timing Role: Main MCU executing LIN cluster communication, PWM-driven LED dimming, and analog sensor acquisition (e.g., ambient light, temperature). Use Value: Integrated TCPWM blocks generate precise 100–20 kHz PWM for flicker-free LED control; 54 GPIO simplify wiring harness integration. | Use Scenario: Capacitive touch activation of door unlock via handle-mounted electrodes, operating reliably under rain or condensation. IC Role / Device Role / Timing Role: CAPSENSE™ controller with hardware-based SmartSense and sigma-delta CSD engine performing real-time baseline correction and noise rejection. Use Value: SNR > 5:1 and water-tolerant design meet OEM IPX4 splash resistance requirements without mechanical buttons or seals. |
| Automotive Gateway Node | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Protocol translation between CAN FD (powertrain), LIN (body), and SENT (sensors) in zonal architecture gateways. IC Role / Device Role / Timing Role: CAN 2.0B + TTCAN node managing time-synchronized diagnostics and software update coordination across domains. Use Value: TTCAN support ensures deterministic message delivery for UDS diagnostic sessions, critical for regulatory compliance (UNECE R155). | Use Scenario: Acquisition and preprocessing of torque, angle, and motor current signals in EPS motor control units. IC Role / Device Role / Timing Role: Analog front-end with 12-bit SAR ADC (1 Msps), opamp buffering, and IDAC excitation driving resistive torque sensors. Use Value: On-chip analog blocks reduce external component count by ≥40%, improving board-level reliability and thermal performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144W | ARM Cortex-M4F core, 112 MHz; includes Ethernet MAC, no integrated CAPSENSE™; larger package (100-pin LQFP). | Better suited for high-performance gateway or ADAS sensor fusion; lacks native capacitive touch capability. | Select when requiring floating-point math, Ethernet, or higher CAN FD bandwidth - not for cost-sensitive touch HMI nodes. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz; AEC-Q100 Grade-2 (–40°C to +105°C); no CAN FD or TTCAN; limited analog integration. | Targeted at legacy body control with basic LIN/I²C; insufficient for modern CAPSENSE™-based HMI or TTCAN timing demands. | Choose only for brownfield designs where toolchain continuity outweighs performance and feature gaps. |
Compared with S32K144W and RL78/F14, CY8C4146LQA-S243 uniquely balances AEC-Q100 Grade-S qualification, integrated CAPSENSE™ with SmartSense, TTCAN, and Deep Sleep efficiency - making it optimal for next-gen automotive touch interfaces and distributed control nodes where mixed-signal integration reduces BOM cost and footprint.
Availability
CY8C4146LQA-S243 is available at Aetrix Electronics and suitable for automotive body electronics, touch-based human-machine interfaces, gateway nodes, and electric power steering sensor interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CY8C4146LQA-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 supporting automotive AEC-Q100 and industrial standards.
CY8C4146LQA-S243 belongs to the PSoC™ 4100S Plus product line, designed specifically for automotive-grade mixed-signal control applications requiring integrated capacitive sensing, CAN communication, and ultra-low-power operation in harsh environments.
FAQ
Does CY8C4146LQA-S243 support CAN FD?
No. CY8C4146LQA-S243 integrates a CAN 2.0B controller with optional time-triggered (TTCAN) operation but does not support CAN FD data rates or extended frame formats. For CAN FD, consider Infineon's AURIX™ TC3xx family or NXP S32K3xx devices.
What development tools are officially supported for this device?
Infineon officially supports ModusToolbox™ (v3.1+) and PSoC™ Creator (v4.4) for firmware development, with board support packages for CY8CKIT-041-41XX and CY8CKIT-149 kits. Debugging uses KitProg3 or MiniProg3 programmers over SWD interface.
Is the CAPSENSE™ implementation hardware-accelerated?
Yes. CAPSENSE™ uses dedicated sigma-delta (CSD) hardware blocks with built-in SmartSense auto-tuning logic, enabling real-time baseline tracking, noise suppression, and water rejection without CPU intervention - reducing firmware overhead by up to 90% versus software-based touch algorithms.
What is the maximum operating temperature grade for this part number?
CY8C4146LQA-S243 is qualified to AEC-Q100 Grade-S, specifying continuous operation from –40°C to +105°C ambient temperature. This grade is validated for under-hood and cabin applications including door modules, HVAC controls, and center stack touch panels.
CY8C4146LQA-S243 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:
- Not Verified
- 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 16x10b, 12x12b SAR; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4146LQA-S243 FAQ
1.How can I place an order for CY8C4146LQA-S243 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQA-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 CY8C4146LQA-S243 reliable?
The price and inventory of CY8C4146LQA-S243 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQA-S243 is usually 5 days.
3.What payment methods are accepted for CY8C4146LQA-S243?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQA-S243 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQA-S243?
CY8C4146LQA-S243 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQA-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 CY8C4146LQA-S243?
For technical support, including CY8C4146LQA-S243 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQA-S243 requirements.
6.How does Aetrix verify that CY8C4146LQA-S243 is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQA-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 CY8C4146LQA-S243 meets industry standards.
7.What is the process for return or replacement of CY8C4146LQA-S243?
All CY8C4146LQA-S243 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQA-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 CY8C4146LQA-S243 part is unused and in its original packaging.
Return procedure for CY8C4146LQA-S243:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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