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Infineon Technologies CY8C4146LQS-S273
- Part No.:
- CY8C4146LQS-S273
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQS-S273.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,900
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Product details
Overview
CY8C4146LQS-S273 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 modules-used in automotive body control modules requiring robust touch interfaces and real-time bus communication.
For engineers reviewing the CY8C4146LQS-S273 datasheet, CY8C4146LQS-S273 pinout, CY8C4146LQS-S273 application, or CY8C4146LQS-S273 equivalent, key selection criteria include its AEC-Q100 Grade-S qualification, on-die CAPSENSE™ SNR >5:1, Deep Sleep current of 2.5 µA, CAN 2.0B + TTCAN compliance, and 54 GPIOs with programmable drive strength and slew rate for EMI-sensitive automotive environments.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ core executes firmware while programmable analog blocks (two opamps, 12-bit SAR ADC, two IDACs, two low-power comparators) and digital blocks (Smart I/O, TCPWM, SCBs) operate concurrently under hardware routing control. All analog peripherals remain functional in Deep Sleep mode at 2.5 µA system current.
Its clock system integrates a 4–33 MHz ECO, 32-kHz WCO, ±2% IMO, and 32-kHz ILO, with a PLL generating the 48-MHz CPU clock. The CAN block supports time-triggered operation with configurable message objects and error counters, and the five SCBs allow runtime reconfiguration between I²C, SPI, UART, or LIN slave modes without reset.
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 priority-based interrupt handling. |
| Memory | 128 KB flash with Read Accelerator + 16 KB SRAM - enables secure firmware storage and real-time data buffering for CAN/CAPSENSE™ co-processing. |
| Analog Peripherals | 12-bit 1-Msps SAR ADC (differential/single-ended), two opamps (Deep Sleep-capable), two IDACs - supports high-resolution sensor signal conditioning and self-capacitance measurement. |
| Digital Peripherals | Five SCBs (I²C/SPI/UART/LIN), one CAN 2.0B + TTCAN block, eight 16-bit TCPWMs - provides concurrent multi-protocol connectivity and precise motor timing with kill-signal triggering. |
| Power & Temp | 1.71–5.5 V supply, Deep Sleep current = 2.5 µA, Grade-S temp range (–40°C to +105°C) - meets automotive power budget and under-hood thermal requirements. |
| GPIO | 54 programmable pins with configurable drive strength, slew rate, and CAPSENSE™/analog/digital assignment - enables flexible PCB layout and noise-immune touch button routing. |
| Security | True Random Number Generator (TRNG) - delivers entropy for cryptographic key generation in secure boot or OTA update authentication. |
Pinout & Package
This device is packaged in a 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch) with wettable flank terminations for automated optical inspection (AOI) and solder joint reliability in automotive reflow profiles.
| 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 logic + 5 V sensor interface). |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIOs | All 54 pins support CAPSENSE™, analog input/output, or digital functions; each configurable for drive mode (strong/pull-up/pull-down/open-drain) and slew rate (fast/slow). |
| CAN_TX / CAN_RX | CAN physical layer interface | Dedicated differential pair with internal termination and slew-rate control compliant with ISO 11898-2 for 1 Mbps automotive CAN bus. |
| XTAL_IN / XTAL_OUT | External crystal oscillator connection | Supports 4–33 MHz ECO for precise clock source; required for CAN bit timing accuracy and USB-free synchronous communication. |
| WCO_IN / WCO_OUT | 32-kHz watch crystal oscillator | Enables RTC operation and low-power wake-up events during Deep Sleep without CPU intervention. |
Key Features
| Feature | Design Value |
|---|---|
| CAPSENSE™ with SmartSense | Hardware-accelerated auto-tuning eliminates manual calibration; achieves >5:1 SNR and water-tolerant touch detection on any GPIO without external components. |
| Runtime-reconfigurable SCBs | Five serial blocks dynamically switch between I²C, SPI, UART, or LIN slave modes via firmware-reducing BOM count and enabling protocol adaptation in field-deployed ECUs. |
| TTCAN support | Time-triggered CAN scheduling with guaranteed message transmission windows and deterministic latency-critical for safety-critical body control and lighting systems. |
| Deep Sleep with active analog | 2.5 µA system current while maintaining CAPSENSE™ scanning, comparator monitoring, and RTC operation-enables always-on touch wake-up in door handle or ignition systems. |
| Programmable Smart I/O | Boolean logic on port inputs/outputs enables hardware-level signal filtering, edge detection, and state machine offload-reducing CPU load in high-interrupt automotive applications. |
Applications
| Automotive Door Module | Interior Lighting Control |
|---|---|
Use Scenario: Capacitive touch handles with proximity wake-up and anti-theft locking feedback. IC Role / Device Role / Timing Role: MCU host for CAPSENSE™ acquisition, CAN message framing, and PWM dimming control of LED strips. Use Value: Single-chip integration replaces discrete touch controller + CAN transceiver + LED driver, reducing PCB area by 35% and qualifying to AEC-Q100 Grade-S. | Use Scenario: Ambient light-adaptive interior dome lights with soft-start fade-in/fade-out. IC Role / Device Role / Timing Role: Real-time ambient light sampling via SAR ADC, closed-loop PWM brightness control using TCPWM center-aligned mode. Use Value: Hardware-based fade timing eliminates software timer jitter; Deep Sleep wake-up on light threshold crossing extends battery life in parked vehicle mode. |
| Body Control Unit (BCU) | Seat Position Memory System |
Use Scenario: Centralized control of window lift, mirror fold, and trunk release with LIN slave interfaces to actuators. IC Role / Device Role / Timing Role: LIN master coordinating multiple slaves; CAN gateway relaying status to instrument cluster. Use Value: Five SCBs allow concurrent LIN (to motors), CAN (to cluster), and UART (to diagnostic port)-no external bridge IC required. | Use Scenario: Non-volatile storage and recall of seat position via potentiometer feedback and motor control. IC Role / Device Role / Timing Role: Analog acquisition of linear pot voltage, PID loop execution, and H-bridge direction/timing via TCPWM kill signals. Use Value: Comparator-triggered kill signal halts motor instantly on end-stop detection-prevents mechanical damage without software polling delay. |
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; 256 KB flash, 32 KB SRAM, identical peripherals and pinout. | Higher memory capacity supports larger OTA update images and dual-bank secure boot. | Select when firmware size exceeds 128 KB or secure dual-bank update is required. |
| SPC560B50L3 | 32-bit Power Architecture SPC5, 64 MHz, 512 KB flash, 48 KB RAM, no integrated CAPSENSE™, requires external touch controller. | Larger code footprint, mature ASIL-B toolchain support, but adds BOM cost and layout complexity for touch. | Select when ASIL-B functional safety certification is mandatory and touch is implemented externally. |
Compared with CY8C4147LQS-S473, this part offers lower memory density but reduced cost and power; versus SPC560B50L3, it integrates CAPSENSE™ and reduces component count, though lacks native ASIL-B certification-making it optimal for cost-sensitive Grade-S automotive modules where touch integration is critical.
Availability
CY8C4146LQS-S273 is available at Aetrix Electronics and suitable for automotive door modules, interior lighting control systems, body control units, and seat position memory systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY8C4146LQS-S273 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 supporting automotive-grade reliability.
This part belongs to the PSoC™ 4100S Plus product line, designed specifically for cost-optimized, AEC-Q100-compliant automotive human-machine interface (HMI) and body electronics applications requiring integrated capacitive sensing and multi-protocol connectivity.
FAQ
Does CY8C4146LQS-S273 support CAN FD?
No. This device implements a CAN 2.0B controller with TTCAN capability only. It does not support CAN FD data rates or extended frame formats. For CAN FD, consider Infineon's AURIX™ TC3xx family or later-generation PSoC™ devices with CAN FD IP blocks.
What development tools are officially supported for firmware programming?
Infineon officially supports ModusToolbox™ (v3.1+) and PSoC™ Creator (v4.4) for firmware development. Programming is performed via SWD interface using MiniProg3, KitProg3, or XRES-based debug probes. Flash programming and debug are fully supported through both IDEs with validated BSPs and PDL drivers.
Is CAPSENSE™ performance affected by PCB stack-up or overlay thickness?
Yes. CAPSENSE™ SNR and sensitivity depend on trace geometry, ground plane distance, and overlay dielectric thickness. Infineon's CAPSENSE™ Design Guide (AN85951) specifies maximum overlay thickness (≤3 mm for glass, ≤1 mm for plastic) and recommends 0.2 mm minimum spacing between sensor traces and ground pour to maintain >5:1 SNR.
Can the 12-bit SAR ADC measure signals beyond VDDIO?
No. The SAR ADC input range is rail-to-rail within the selected VDDA domain (1.71–5.5 V), and absolute maximum input voltage is limited to VDDA + 0.3 V. Measuring above VDDIO requires external signal conditioning (e.g., resistor divider or opamp scaling) to avoid damage and ensure accuracy.
CY8C4146LQS-S273 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, CapSense, DMA, LCD, 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-S273 FAQ
1.How can I place an order for CY8C4146LQS-S273 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQS-S273 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-S273 reliable?
The price and inventory of CY8C4146LQS-S273 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQS-S273 is usually 5 days.
3.What payment methods are accepted for CY8C4146LQS-S273?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQS-S273 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQS-S273?
CY8C4146LQS-S273 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQS-S273 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-S273?
For technical support, including CY8C4146LQS-S273 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQS-S273 requirements.
6.How does Aetrix verify that CY8C4146LQS-S273 is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQS-S273 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-S273 meets industry standards.
7.What is the process for return or replacement of CY8C4146LQS-S273?
All CY8C4146LQS-S273 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQS-S273, 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-S273 part is unused and in its original packaging.
Return procedure for CY8C4146LQS-S273:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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