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Infineon Technologies CY8C4126LQS-S453T
- Part No.:
- CY8C4126LQS-S453T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4126LQS-S453T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,724
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Product details
Overview
CY8C4126LQS-S453T 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, and integrated CAPSENSE™ capacitive sensing with >5:1 SNR. It includes five reconfigurable serial communication blocks (SCBs), eight 16-bit TCPWM units, and a CAN 2.0B controller with TTCAN support-deployed in automotive body control modules requiring robust touch interface and real-time bus communication.
For engineers reviewing the CY8C4126LQS-S453T datasheet, CY8C4126LQS-S453T pinout, CY8C4126LQS-S453T application, or CY8C4126LQS-S453T equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-chip CAPSENSE™ with SmartSense auto-tuning, CAN 2.0B + TTCAN compliance, Deep Sleep current of 2.5 µA, and GPIO flexibility across 54 pins with programmable drive strength and slew rate.
Technical Context
This device implements a mixed-signal SoC architecture integrating fixed-function and programmable analog/digital resources. Its ARM Cortex-M0+ core executes firmware while dedicated hardware blocks handle CAPSENSE™ sigma-delta conversion, CAN protocol framing, and TCPWM-based motor control timing-all synchronized via a configurable clock tree with ECO, WCO, IMO, and ILO sources.
The programmable analog subsystem includes two opamps supporting ADC input buffering and comparator modes, a 12-bit 1-Msps SAR ADC with channel sequencer and averaging, and two IDACs usable for self-capacitance or mutual-capacitance sensing. Digital logic is extended via Smart I/O blocks enabling Boolean operations directly on GPIO paths without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables deterministic real-time control with Thumb-2 instruction set and NVIC interrupt handling |
| Memory | 128 KB flash (with Read Accelerator), 16 KB SRAM - supports secure bootloader storage and runtime variable allocation for automotive firmware |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with >5:1 SNR and water tolerance - delivers reliable touch detection in humid or wet environments without external shielding |
| CAN Interface | CAN 2.0B + time-triggered CAN (TTCAN) - meets ISO 11898-1 for deterministic message scheduling in safety-critical vehicle networks |
| Power Range | 1.71 V to 5.5 V supply - allows direct connection to 3.3 V or 5 V automotive domains without level-shifting |
| Low-Power Mode | Deep Sleep at 2.5 µA system current with operational analog - sustains wake-on-touch or CAN bus activity during vehicle sleep states |
| GPIO Count | 54 programmable pins - all support CAPSENSE™, analog, or digital functions with configurable drive strength (up to 25 mA) and slew rate |
Pinout & Package
Package: 64-pin QFN (9 mm × 9 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 logic + 5 V sensor interface) |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | Each pin supports up to 12 alternate functions including SCB, TCPWM, CAN_RX/TX, CSD_SNS, and analog input/output |
| CAN_TX / CAN_RX | Dedicated CAN transceiver interface | Hardwired to internal CAN block; require external high-speed CAN transceiver (e.g., TJA1042) for physical layer compliance |
| XTAL_IN / XTAL_OUT | External crystal oscillator input/output | Supports 4–33 MHz ECO for precise timing; required for CAN bit-rate accuracy and USB-free clock synchronization |
| WCO_IN / WCO_OUT | 32-kHz watch crystal oscillator | Enables RTC operation and low-power wake-up timing independent of main clock domain |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual firmware tuning and maintains stable baseline tracking across temperature and voltage drift |
| Reconfigurable SCBs | Five serial communication blocks dynamically assignable as I²C, SPI, UART, or LIN slave - reduces BOM count by consolidating protocol interfaces into shared hardware |
| TCPWM kill signal | Comparator-triggered hardware fault response disables PWM outputs within <100 ns - critical for motor overcurrent protection in EPS or HVAC blower systems |
| True Random Number Generator (TRNG) | Dedicated entropy source compliant with NIST SP 800-90B - enables FIPS-compliant key generation for secure boot and OTA update authentication |
| Programmable analog routing | Internal analog buses connect opamps, ADC, IDACs, and comparators without external traces - preserves signal integrity in high-noise automotive PCB layouts |
Applications
| Automotive Door Module | Climate Control Panel |
|---|---|
Use Scenario: Touch-sensitive door handle and window switch interface with proximity wake-up and anti-pinch motor control. IC Role / Device Role / Timing Role: Central MCU executing CAPSENSE™ gesture recognition, CAN message arbitration, and TCPWM-driven window motor timing. Use Value: Single-chip integration replaces discrete touch controller + CAN node + motor driver, reducing board area by 35% and eliminating inter-IC latency. | Use Scenario: HVAC control panel with slider-based temperature adjustment and fan speed control under condensation-prone cabin conditions. IC Role / Device Role / Timing Role: CAPSENSE™ CSD front-end with water-tolerant sensing, coupled with CAN messaging to HVAC ECU and PWM fan control. Use Value: >5:1 SNR ensures reliable touch detection even with surface moisture, avoiding false triggers during rain or fogging. |
| Steering Wheel Controls | Seat Position Memory System |
Use Scenario: Multi-function steering wheel buttons and rotary encoders for infotainment and cruise control, operating in high-EMI engine bay environment. IC Role / Device Role / Timing Role: Electromagnetic-immune CAPSENSE™ acquisition, CAN message transmission, and real-time interrupt handling for safety-critical inputs. Use Value: Smart I/O logic filters noise at pin level before CPU involvement, reducing software filtering overhead and improving response time to <5 ms. | Use Scenario: Non-volatile memory-backed seat position recall using capacitive sliders and motorized actuation with position feedback. IC Role / Device Role / Timing Role: CAPSENSE™ slider interface, EEPROM-emulated flash storage, CAN bus coordination with body control module, and TCPWM motor sequencing. Use Value: On-chip flash endurance (>100k cycles) and built-in wear-leveling eliminate need for external EEPROM, lowering total cost by $0.32/unit. |
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; includes Ethernet MAC and FlexRay; no integrated CAPSENSE™ | Targets gateway/central ECU roles requiring higher compute throughput and multi-bus connectivity, not touch-centric nodes | Select when CAN + Ethernet/FlexRay coexistence is required; add external touch controller if CAPSENSE™ needed |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz; AEC-Q100 Grade-2 (–40°C to +105°C); no CAN FD or TTCAN | Cost-optimized for basic body electronics (e.g., mirror control) without advanced timing or security features | Select for non-safety-critical, low-compute applications where CAN 2.0B suffices and TRNG/CAPSENSE™ are unnecessary |
Compared with S32K144HAT0MLHT and RL78/F14, CY8C4126LQS-S453T uniquely integrates high-SNR capacitive sensing, TTCAN, and Deep Sleep power efficiency in a single AEC-Q100 Grade-S package-making it optimal for distributed touch-enabled ECUs where silicon consolidation and low standby current are design priorities.
Availability
CY8C4126LQS-S453T is available at Aetrix Electronics and suitable for automotive body control modules, climate control panels, and steering wheel interface systems requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 compliance.
Supply support for CY8C4126LQS-S453T 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 ICs, with global R&D centers and wafer fabs in Dresden and Villach.
CY8C4126LQS-S453T belongs to the PSoC™ 4100S Plus product line, engineered specifically for automotive human-machine interface (HMI) applications demanding integrated capacitive sensing, CAN communication, and functional safety-ready peripherals.
FAQ
Is CY8C4126LQS-S453T 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. The device undergoes stress testing for temperature cycling, humidity bias, and ESD per JESD22 standards, and includes built-in self-test (BIST) for flash and SRAM to support ASIL-B readiness.
Does this part support CAN FD?
No. CY8C4126LQS-S453T implements CAN 2.0B with time-triggered extensions (TTCAN), but does not support CAN FD data rates or frame formats. For CAN FD requirements, consider Infineon's AURIX™ TC3xx family or evaluate external CAN FD controllers interfaced via SPI.
Can CAPSENSE™ operate during Deep Sleep mode?
Yes. CAPSENSE™ CSD scanning can run autonomously in Deep Sleep mode using the internal ILO clock, consuming only 2.5 µA total system current. Wake-up events (e.g., touch detection) trigger interrupt assertion without CPU wake-up, enabling ultra-low-power HMI monitoring.
What development tools are supported?
Infineon provides full support via ModusToolbox™ (Eclipse-based IDE with PDL, BSPs, and CAPSENSE™ middleware) and legacy PSoC™ Creator. Hardware debugging uses KitProg3 or MiniProg3 programmers. Pre-certified CAPSENSE™ tuning libraries and CAN stack examples are included in both toolchains.
CY8C4126LQS-S453T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100S Plus
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, 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, 20x12b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4126LQS-S453T FAQ
1.How can I place an order for CY8C4126LQS-S453T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126LQS-S453T 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 CY8C4126LQS-S453T reliable?
The price and inventory of CY8C4126LQS-S453T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126LQS-S453T is usually 5 days.
3.What payment methods are accepted for CY8C4126LQS-S453T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126LQS-S453T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126LQS-S453T?
CY8C4126LQS-S453T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126LQS-S453T 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 CY8C4126LQS-S453T?
For technical support, including CY8C4126LQS-S453T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126LQS-S453T requirements.
6.How does Aetrix verify that CY8C4126LQS-S453T is sourced from the original manufacturer or authorized distributors?
All CY8C4126LQS-S453T 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 CY8C4126LQS-S453T meets industry standards.
7.What is the process for return or replacement of CY8C4126LQS-S453T?
All CY8C4126LQS-S453T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126LQS-S453T, 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 CY8C4126LQS-S453T part is unused and in its original packaging.
Return procedure for CY8C4126LQS-S453T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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