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Infineon Technologies CY8C4126LQS-S453
- Part No.:
- CY8C4126LQS-S453
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4126LQS-S453.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,713
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Product details
Overview
CY8C4126LQS-S453 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 SmartSense auto-tuning. It includes five reconfigurable serial communication blocks (SCB), CAN 2.0B with TTCAN support, and eight 16-bit TCPWM blocks-used in motor control and automotive body electronics.
For engineers reviewing the CY8C4126LQS-S453 datasheet, CY8C4126LQS-S453 pinout, CY8C4126LQS-S453 application, or CY8C4126LQS-S453 equivalent, key selection criteria include its AEC-Q100 qualification, Deep Sleep current of 2.5 µA, 12-bit 1-Msps SAR ADC, dual opamps with low-power operation, and programmable analog/digital routing for sensor fusion and real-time control in constrained automotive ECUs.
Technical Context
The device integrates a fixed-function CAN 2.0B controller with time-triggered capability (TTCAN) and supports LIN slave mode via SCB peripherals. Its clock system combines a 4–33 MHz ECO, 32-kHz WCO, ±2% IMO, and ILO-enabling precise timing for synchronized sensor sampling and deterministic communication.
Programmable analog resources include two continuous-time opamps (CTB) with ADC input buffering and comparator modes, plus two IDACs usable for CAPSENSE™ or current-source biasing. Digital logic is implemented through Smart I/O blocks and eight TCPWM units supporting quadrature decoding, kill-signal triggering, and center-aligned PWM for motor gate drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic execution for safety-critical automotive tasks. |
| Flash / SRAM | 128 KB flash with Read Accelerator / 16 KB SRAM - supports firmware updates and multi-sensor data buffering without external memory. |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended, channel sequencer with averaging - delivers high-resolution analog acquisition for battery monitoring or temperature sensing. |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with >5:1 SNR and water tolerance - enables robust touch interfaces in wet or noisy automotive cabin environments. |
| Power Range | 1.71 V to 5.5 V operation, 2.5 µA Deep Sleep current - sustains always-on functionality in low-power vehicle modules like door handles or seat controls. |
| CAN Interface | CAN 2.0B with TTCAN support - provides time-synchronized messaging required for distributed chassis control networks. |
| GPIO Count | Up to 54 programmable pins, any pin supports CAPSENSE™/analog/digital - simplifies PCB layout and enables flexible signal routing in space-constrained ECUs. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, thermally enhanced with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power supply domains | Independent 1.71–5.5 V domains per port group enable mixed-voltage interfacing (e.g., 3.3 V MCU core with 5 V sensor inputs). |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | Each pin supports configurable drive strength, slew rate, and analog/digital/CAPSENSE™ functions - no fixed peripheral pinout required. |
| CAN_TX / CAN_RX | Dedicated CAN transceiver interface | Hardwired to internal CAN block; supports direct connection to ISO 11898-2 compliant transceivers without external logic. |
| XTAL_IN / XTAL_OUT | External crystal oscillator input/output | Supports 4–33 MHz ECO for high-accuracy timing; required for CAN bit-rate stability and clock calibration. |
| WCO_IN / WCO_OUT | 32-kHz watch crystal oscillator | Enables RTC operation and low-power wake-up events while main CPU remains in Deep Sleep. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning and compensates for environmental drift in production vehicles. |
| Deep Sleep with active analog | Opamps, comparators, and SAR ADC remain operational at 2.5 µA system current - enables continuous sensor monitoring without waking CPU. |
| Reconfigurable SCBs | Five serial blocks dynamically switch between I²C/SPI/UART/LIN slave - reduces BOM count and simplifies firmware adaptation across vehicle platforms. |
| TCPWM kill-signal triggering | Comparator outputs directly assert hardware kill signals to PWM outputs - ensures sub-microsecond fault response for motor overcurrent protection. |
| True Random Number Generator (TRNG) | Meets NIST SP 800-90B entropy requirements - enables secure key generation for automotive OTA update authentication. |
Applications
| Automotive Door Module | Electric Power Steering (EPS) Sensor Hub |
|---|---|
Use Scenario: Integrated control of window lift, mirror fold, and capacitive door handle detection in ambient temperature up to +105°C. IC Role / Device Role / Timing Role: Main MCU executing CAN-based body network commands while performing real-time CAPSENSE™ gesture recognition and analog battery voltage monitoring. Use Value: Single-chip integration replaces discrete MCU + touch controller + ADC, reducing PCB area by 35% and eliminating inter-chip timing skew. |
Use Scenario: Aggregating torque, position, and temperature sensor data from EPS motor assembly before forwarding via CAN to steering ECU. IC Role / Device Role / Timing Role: Sensor fusion hub with synchronized 12-bit ADC sampling and hardware-triggered TCPWM for motor phase control feedback. Use Value: Deterministic 1-Msps sampling and TTCAN messaging ensure <10 µs jitter in torque loop closure, meeting ASIL-B timing constraints. |
| Climate Control Panel | Seat Occupancy Detection System |
Use Scenario: Capacitive touch interface for HVAC buttons and rotary encoder, operating reliably under condensation and glove use. IC Role / Device Role / Timing Role: CAPSENSE™-optimized MCU managing touch UI, fan speed PWM, and I²C-connected temperature/humidity sensors. Use Value: CSD architecture with >5:1 SNR and water tolerance eliminates false triggers during cabin fogging or spill events. |
Use Scenario: Detecting occupant presence and posture using embedded seat cushion capacitance sensing with adaptive baseline tracking. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ subsystem with SmartSense auto-calibration running independently of main application firmware. Use Value: Hardware-accelerated sensing achieves <50 ms detection latency and maintains accuracy across –40°C to +105°C without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4127LQT-S433 | Same PSoC™ 4100S Plus family, but 64-pin TQFP package, 128 KB flash, 16 KB SRAM, and identical peripheral set - differs only in package and pin count. | Requires larger PCB footprint and different thermal pad layout; suitable when >48 GPIOs or board-level routing flexibility is needed. | Select when higher pin count or TQFP assembly compatibility is required; not drop-in compatible due to package mismatch. |
| NXP S32K144HAT0MLHT | ARM Cortex-M4F core, 112 MHz, 1 MB flash, 128 KB SRAM, CAN FD, Ethernet, but no integrated CAPSENSE™ or programmable analog blocks. | Targets higher-performance powertrain/safety applications; lacks on-chip capacitive sensing and requires external analog front-end for touch. | Choose for CAN FD or floating-point math-intensive tasks; avoid if CAPSENSE™ or analog configurability is mandatory. |
Compared with CY8C4126LQS-S453, CY8C4127LQT-S433 offers identical functionality in a larger package for expanded I/O, while S32K144HAT0MLHT trades programmable analog and CAPSENSE™ for higher compute throughput and CAN FD-making it unsuitable for touch-centric automotive body modules.
Availability
CY8C4126LQS-S453 is available at Aetrix Electronics and suitable for automotive body electronics, capacitive touch human-machine interfaces, and sensor aggregation modules requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for CY8C4126LQS-S453 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.
CY8C4126LQS-S453 belongs to the PSoC™ 4100S Plus product line, designed specifically for cost-sensitive, safety-aware automotive body electronics requiring integrated capacitive sensing, low-power operation, and CAN/TTCAN connectivity.
FAQ
Is CY8C4126LQS-S453 qualified for automotive use?
Yes. It is AEC-Q100 Grade-S qualified for operation from –40°C to +105°C and certified for automotive body electronics applications including door modules, climate panels, and seat controls. The qualification covers stress testing for temperature cycling, humidity, and ESD per AEC standards.
Does this part support CAN FD?
No. CY8C4126LQS-S453 implements CAN 2.0B with optional time-triggered CAN (TTCAN) but does not support CAN FD data rates or extended frame formats. For CAN FD, consider Infineon's AURIX™ TC3xx or NXP S32K144 families.
Can CAPSENSE™ operate during Deep Sleep mode?
Yes. CAPSENSE™ CSD sensing can run autonomously in Deep Sleep mode using the internal ILO clock, with wake-up interrupt generation upon touch detection. Opamps and comparators remain active, enabling continuous low-power proximity sensing without CPU involvement.
What development tools are supported?
Infineon's ModusToolbox™ software and legacy PSoC™ Creator IDE both support CY8C4126LQS-S453. Hardware evaluation is enabled by CY8CKIT-149 (PSoC™ 4100S Plus prototyping kit) and CY8CKIT-041-41XX (CAPSENSE™ Pioneer Kit), both including MiniProg3 debug/programming interfaces.
CY8C4126LQS-S453 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:
- 24MHz
- 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, 20x12b SAR
- 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:
CY8C4126LQS-S453 FAQ
1.How can I place an order for CY8C4126LQS-S453 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126LQS-S453 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-S453 reliable?
The price and inventory of CY8C4126LQS-S453 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126LQS-S453 is usually 5 days.
3.What payment methods are accepted for CY8C4126LQS-S453?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126LQS-S453 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126LQS-S453?
CY8C4126LQS-S453 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126LQS-S453 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-S453?
For technical support, including CY8C4126LQS-S453 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126LQS-S453 requirements.
6.How does Aetrix verify that CY8C4126LQS-S453 is sourced from the original manufacturer or authorized distributors?
All CY8C4126LQS-S453 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-S453 meets industry standards.
7.What is the process for return or replacement of CY8C4126LQS-S453?
All CY8C4126LQS-S453 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126LQS-S453, 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-S453 part is unused and in its original packaging.
Return procedure for CY8C4126LQS-S453:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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