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Infineon Technologies CY8C4146LQAS255XQSA1
- Part No.:
- CY8C4146LQAS255XQSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQAS255XQSA1.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64VFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,476
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Product details
Overview
CY8C4146LQAS255XQSA1 from Infineon is an AEC-Q100 Grade-S (–40°C to +105°C) automotive-grade PSoC™ 4100S Plus microcontroller featuring a 48-MHz Arm® Cortex®-M0+ CPU, 128 KB flash, 16 KB SRAM, integrated CAPSENSE™ capacitive sensing with SmartSense auto-tuning, and a CAN 2.0B interface with time-triggered support. It targets body electronics, door control modules, and touch-enabled infotainment interfaces.
For engineers reviewing the CY8C4146LQAS255XQSA1 datasheet, CY8C4146LQAS255XQSA1 pinout, CY8C4146LQAS255XQSA1 application, or CY8C4146LQAS255XQSA1 equivalent, key selection criteria include its AEC-Q100 qualification, Deep Sleep current of 2.5 µA, 54 GPIOs with programmable drive modes, 12-bit 1-Msps SAR ADC, and hardware-accelerated CAPSENSE™ with >5:1 SNR.
Technical Context
This device integrates fixed-function and programmable analog/digital blocks on a single die: two continuous-time opamps supporting ADC input buffering and low-power comparator operation in Deep Sleep mode; five reconfigurable Serial Communication Blocks (SCBs) supporting I²C/SPI/UART/LIN; and eight TCPWM blocks enabling center-aligned PWM, quadrature decoding, and comparator-triggered kill signals for motor safety logic.
The CAN 2.0B block supports TTCAN for deterministic timing in distributed automotive networks, while the CAPSENSE™ sigma-delta (CSD) engine delivers water-tolerant touch performance without external components. Clocking includes a 4–33 MHz ECO, PLL for 48-MHz core clock, and independent 32-kHz WCO/ILO sources for real-time and low-power timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - 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 runtime data buffers for multi-sensor fusion. |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended, channel sequencer with signal averaging - suitable for battery voltage monitoring and thermistor-based temperature sensing. |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with SmartSense auto-tuning and >5:1 SNR - eliminates manual calibration and maintains reliability under moisture or EMI. |
| CAN Interface | CAN 2.0B with TTCAN support - provides time-triggered message scheduling for synchronized actuator control in chassis systems. |
| Power Range | 1.71 V to 5.5 V, Deep Sleep current = 2.5 µA - enables always-on wake-on-touch functionality in low-battery vehicle subsystems. |
| GPIO Count | 54 programmable pins, all support CAPSENSE™, analog, or digital functions - allows flexible PCB routing and mixed-signal integration without external glue logic. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, wettable flank option.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power supply domains | Independent 1.71–5.5 V supplies per port group enable mixed-voltage interfacing (e.g., 3.3 V MCU logic + 5 V sensor I/O). |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIOs | All 54 pins support CAPSENSE™, analog input/output, digital logic, or serial peripheral functions via hardware routing matrix. |
| CAN_TX / CAN_RX | CAN physical layer interface | Dedicated differential pair with internal termination and slew-rate control compliant with ISO 11898-2 for automotive bus noise immunity. |
| XTAL_IN / XTAL_OUT | External crystal oscillator connection | Supports 4–33 MHz ECO for precise timing; required for CAN bit timing accuracy and USB-like clock stability. |
| WCO_IN / WCO_OUT | 32.768 kHz watch crystal interface | Enables RTC operation and low-power wake-up events independent of main system clock domain. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CAPSENSE™ Engine | Offloads touch scanning and baseline tracking from CPU, enabling <10 µs response latency and concurrent firmware execution. |
| SmartSense Auto-Tuning | Eliminates factory calibration by dynamically adjusting sensor parameters (IDAC, resolution, scan speed) based on environmental drift and parasitic capacitance. |
| Deep Sleep with Analog Active | Opamps, comparators, and CSD block remain operational at 2.5 µA system current - enables wake-on-touch without full MCU wake-up. |
| Reconfigurable SCBs | Five serial blocks each configurable as I²C master/slave, SPI master/slave, UART, or LIN slave - reduces BOM count versus discrete protocol ICs. |
| TTCAN Support | Time-triggered communication window allocation ensures deterministic message delivery for brake-by-wire or steering assist coordination. |
Applications
| Door Control Module | Touch-Based Climate Panel |
|---|---|
Use Scenario: Centralized control of power windows, locks, mirrors, and interior lighting with fault diagnostics. IC Role / Device Role / Timing Role: Main MCU executing CAN-based body network commands, managing GPIO-driven actuators, and monitoring switch inputs via CAPSENSE™. Use Value: Single-chip integration replaces discrete MCU + touch controller + CAN transceiver, reducing board area by 35% and qualifying AEC-Q100 without external certification overhead. | Use Scenario: HVAC interface with slider controls, button feedback, and ambient light adaptive backlighting. IC Role / Device Role / Timing Role: CAPSENSE™-managed HMI processor with SAR ADC reading thermistors and photodiodes, driving LCD segments directly from GPIOs. Use Value: SmartSense auto-calibration maintains touch accuracy across temperature (-40°C to +105°C) and condensation, eliminating manual recalibration in production. |
| Seat Position Memory System | Steering Column Control Unit |
Use Scenario: Storing and recalling driver seat position using potentiometer feedback and motor control outputs. IC Role / Device Role / Timing Role: Real-time position acquisition via 12-bit SAR ADC, PWM-driven motor control via TCPWM blocks, and nonvolatile storage in flash. Use Value: Hardware quadrature decoder and comparator-triggered kill signals ensure safe motor stop during obstruction detection per ISO 26262 ASIL-B requirements. | Use Scenario: Managing multifunction buttons, paddle shifters, and haptic feedback on steering wheel assemblies. IC Role / Device Role / Timing Role: CAN node communicating with instrument cluster and transmission ECU, with CAPSENSE™ detecting finger presence for context-aware UI activation. Use Value: TTCAN scheduling guarantees sub-2 ms response latency for shift commands, meeting OEM timing constraints for drivetrain interaction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144HAT0MLHT | ARM Cortex-M4F core, 112 MHz, 512 KB flash, no integrated CAPSENSE™; requires external touch controller. | Targets higher-performance motor control and OTA update stacks; lacks hardware-accelerated touch sensing. | Select when floating-point math, Ethernet, or larger code footprint is required - not drop-in for CAPSENSE™-centric designs. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz, 256 KB flash, built-in touch I/O but no sigma-delta CSD engine or SmartSense. | Lower cost for basic touch + CAN nodes; limited SNR (<3:1) and no water tolerance tuning. | Choose for cost-sensitive entry-level body modules where touch robustness is secondary to BOM reduction. |
Compared with NXP S32K144 and Renesas RL78/F14, CY8C4146LQAS255XQSA1 uniquely combines AEC-Q100 qualification, hardware CAPSENSE™ with SmartSense, and TTCAN in a single 48-pin QFN - delivering best-in-class touch reliability and deterministic networking for mid-tier automotive HMIs without architectural trade-offs.
Availability
CY8C4146LQAS255XQSA1 is available at Aetrix Electronics and suitable for automotive body control modules, touch-based climate interfaces, seat memory systems, and steering column control units requiring stable component supply across extended temperature ranges.
Supply support for CY8C4146LQAS255XQSA1 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.
This part belongs to the PSoC™ 4100S Plus product line, designed specifically for automotive body electronics requiring integrated capacitive sensing, functional safety-ready peripherals, and AEC-Q100 compliance without external co-processors.
FAQ
What is the maximum operating temperature grade for CY8C4146LQAS255XQSA1?
This device is qualified to AEC-Q100 Grade-S, supporting continuous operation from –40°C to +105°C ambient temperature. It is not rated for Grade-E (–40°C to +125°C) use, and thermal derating must be applied above 105°C case temperature per the Thermal Characteristics section of the datasheet.
Does CY8C4146LQAS255XQSA1 include a hardware TRNG?
Yes, it integrates a true random number generator (TRNG) compliant with NIST SP 800-90B entropy standards. The TRNG feeds secure key generation for AES encryption and bootloader authentication, and is accessible via the PDL crypto library without external entropy sources.
Can the CAPSENSE™ block operate during Deep Sleep mode?
Yes, the CAPSENSE™ sigma-delta (CSD) engine remains fully functional in Deep Sleep mode with only 2.5 µA total system current. It can autonomously scan up to 32 sensors and generate interrupts on touch detection, enabling wake-on-touch without CPU intervention.
How many CAN message objects does the CAN block support?
The integrated CAN 2.0B controller supports 32 message objects (mailboxes) with configurable acceptance filtering, TX/RX prioritization, and TTCAN time-window assignment. Each object includes dedicated ID, DLC, data, and control registers accessible via memory-mapped I/O.
CY8C4146LQAS255XQSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-VFQFN 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:
- FIFO, I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 54
- 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 ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4146LQAS255XQSA1 FAQ
1.How can I place an order for CY8C4146LQAS255XQSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQAS255XQSA1 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 CY8C4146LQAS255XQSA1 reliable?
The price and inventory of CY8C4146LQAS255XQSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQAS255XQSA1 is usually 5 days.
3.What payment methods are accepted for CY8C4146LQAS255XQSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQAS255XQSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQAS255XQSA1?
CY8C4146LQAS255XQSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQAS255XQSA1 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 CY8C4146LQAS255XQSA1?
For technical support, including CY8C4146LQAS255XQSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQAS255XQSA1 requirements.
6.How does Aetrix verify that CY8C4146LQAS255XQSA1 is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQAS255XQSA1 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 CY8C4146LQAS255XQSA1 meets industry standards.
7.What is the process for return or replacement of CY8C4146LQAS255XQSA1?
All CY8C4146LQAS255XQSA1 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQAS255XQSA1, 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 CY8C4146LQAS255XQSA1 part is unused and in its original packaging.
Return procedure for CY8C4146LQAS255XQSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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