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Infineon Technologies CY8C4126LQA-S453
- Part No.:
- CY8C4126LQA-S453
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4126LQA-S453.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,074
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Product details
Overview
CY8C4126LQA-S453 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 (SCB), eight TCPWM modules, a CAN 2.0B controller with TTCAN support, and programmable analog blocks - deployed in automotive body electronics, smart sensors, and infotainment control units.
For engineers reviewing the CY8C4126LQA-S453 datasheet, CY8C4126LQA-S453 pinout, CY8C4126LQA-S453 application, or CY8C4126LQA-S453 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 capability, and 54 GPIO with configurable drive modes and analog/digital/CAPSENSE™ flexibility.
Technical Context
The device integrates a dedicated CAN 2.0B block with time-triggered CAN (TTCAN) compliance for deterministic automotive networking, alongside eight independent TCPWM blocks supporting center-aligned PWM, quadrature decoding, and comparator-triggered kill signals for motor safety. Its analog subsystem includes two opamps operable in Deep Sleep mode, a 12-bit 1-Msps SAR ADC with sequencer and averaging, and dual IDACs for self-capacitance sensing.
Programmable digital logic is implemented via Smart I/O blocks enabling Boolean operations on port signals without CPU intervention, while five SCBs provide runtime-reconfigurable I²C/SPI/UART/LIN functionality. Clocking combines a 4–33 MHz ECO, PLL-based 48-MHz system clock, 32-kHz WCO, and ±2% IMO for robust timing across operating conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - enables real-time deterministic execution for automotive control loops and sensor fusion. |
| Flash / SRAM | 128 KB flash with Read Accelerator / 16 KB SRAM - supports secure bootloader, firmware updates, and multi-tasking RTOS environments. |
| CAN Interface | CAN 2.0B with TTCAN support - provides time-synchronized message scheduling required for ASAM MCD-2 MC and AUTOSAR-compliant ECUs. |
| CAPSENSE™ Performance | Sigma-delta CSD with SNR >5:1 and water tolerance - enables reliable touch buttons/knobs in humid automotive interiors without shielding. |
| Low-Power Modes | Deep Sleep at 2.5 µA with active analog - sustains capacitive wake-up, RTC, and comparator monitoring during vehicle sleep states. |
| GPIO Count & Flexibility | 54 programmable pins, any pin supports CAPSENSE™/analog/digital - eliminates fixed-function pin constraints in layout-constrained automotive modules. |
| ADC Resolution & Speed | 12-bit SAR ADC, 1 Msps with channel sequencer and signal averaging - captures fast transients in motor current sensing or battery voltage monitoring. |
Pinout & Package
CY8C4126LQA-S453 is housed in a 64-pin TQFP package (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad, rated for automotive temperature range (–40°C to +105°C) and qualified per AEC-Q100 Grade-S.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO5 | I/O power supply domains | Independent 1.71–5.5 V domains enable mixed-voltage interfacing (e.g., 3.3 V MCU core with 5 V sensor inputs). |
| P0[0]–P9[7] | Programmable GPIO | All pins support CAPSENSE™, analog input/output, digital logic, and configurable slew rate/drive strength for EMI control. |
| CAN_TX / CAN_RX | Dedicated CAN physical layer interface | Hardwired to internal CAN controller; supports ISO 11898-2 compliant differential signaling with integrated termination options. |
| XTAL_IN / XTAL_OUT | External crystal oscillator connection | Supports 4–33 MHz ECO for high-accuracy timing; essential for CAN bit timing precision and TTCAN synchronization. |
| WCO_IN / WCO_OUT | 32-kHz watch crystal oscillator | Enables low-power RTC operation and wake-up from Deep Sleep without CPU involvement. |
| SWDCLK / SWDIO | ARM Serial Wire Debug interface | Two-pin debug path for programming, real-time trace, and non-intrusive debugging in production and validation environments. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning and compensates for PCB aging, humidity, and temperature drift. |
| Programmable Analog Blocks | Two opamps + two comparators + dual IDACs operate in Deep Sleep - enables always-on proximity detection with sub-µA system current. |
| TTCAN Compliance | Time-triggered CAN scheduling ensures deterministic latency and fault containment for safety-critical chassis and ADAS sub-systems. |
| Reconfigurable SCBs | Five serial blocks dynamically switch between I²C/SPI/UART/LIN - reduces BOM count and simplifies firmware adaptation across vehicle variants. |
| True Random Number Generator | On-chip TRNG meets NIST SP 800-90B entropy requirements - enables secure key generation for TLS handshake and OTA update authentication. |
Applications
| Automotive Door Module | Smart HVAC Control Panel |
|---|---|
Use Scenario: Centralized control of window lift, mirror fold, and lock actuation with capacitive touch UI and LIN communication to body domain controller. IC Role / Device Role / Timing Role: Main MCU executing motor control algorithms, CAPSENSE™ processing, and LIN slave protocol stack with synchronized wake-up via CAN or WCO. Use Value: Single-chip integration replaces discrete MCU + touch controller + LIN transceiver, reducing PCB area by 35% and qualifying to AEC-Q100 Grade-S. | Use Scenario: Touch-enabled climate control interface with ambient light sensing, fan speed regulation, and CAN bus reporting of cabin temperature and error codes. IC Role / Device Role / Timing Role: Real-time sensor fusion hub combining 12-bit ADC (NTC thermistors), CAPSENSE™ (touch sliders), and CAN 2.0B (diagnostic messaging). Use Value: Hardware-accelerated SmartSense maintains touch reliability under condensation, while TTCAN ensures HVAC status updates meet <50 ms deadline in AUTOSAR Classic. |
| Electric Power Steering (EPS) Sensor Hub | LED Headlamp Driver Controller |
Use Scenario: Acquisition and preprocessing of torque sensor, motor phase current, and steering angle signals prior to transmission to main EPS ECU over CAN. IC Role / Device Role / Timing Role: Safety-monitoring peripheral node performing analog signal conditioning, CRC-checked data packaging, and TTCAN time-stamped transmission. Use Value: Dual opamp + SAR ADC + comparator chain achieves <1 µs propagation delay for torque fault detection, meeting ISO 26262 ASIL-B decomposition requirements. | Use Scenario: Dynamic LED matrix control with thermal monitoring, PWM dimming, and diagnostics for adaptive driving beam (ADB) systems. IC Role / Device Role / Timing Role: PWM generator (TCPWM) with dead-time insertion, analog temperature sensing (IDAC + thermistor), and CAN-based fault reporting. Use Value: Eight TCPWM blocks enable independent control of 16+ LED strings; Deep Sleep + IDAC allows continuous thermal guardbanding at <3 µA total system current. |
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 but no integrated CAPSENSE™; requires external touch controller. | Targeted at gateway and higher-performance chassis control; lacks hardware-accelerated capacitive sensing. | Select when Ethernet connectivity or floating-point math is required; not drop-in for CAPSENSE™-centric HMI designs. |
| 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 resources (10-bit ADC, no IDAC). | Cost-sensitive entry-level body control modules; insufficient for SNR-critical touch or time-triggered networking. | Choose for simple relay/LED control where CAN is basic 2.0A only and touch is mechanical or resistive. |
Compared with S32K144W and RL78/F14, CY8C4126LQA-S453 uniquely delivers integrated CAPSENSE™ with SmartSense, TTCAN, and Deep Sleep analog operation - making it optimal for compact, safety-aware automotive HMI and sensor aggregation nodes where mixed-signal integration reduces system-level complexity and validation effort.
Availability
CY8C4126LQA-S453 is available at Aetrix Electronics and suitable for automotive door modules, smart HVAC panels, EPS sensor hubs, and LED headlamp controllers requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle assurance.
Supply support for CY8C4126LQA-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 serving Tier-1 automotive suppliers.
CY8C4126LQA-S453 belongs to the PSoC™ 4100S Plus product line - designed specifically for automotive body electronics and human-machine interface applications requiring certified functional safety, integrated analog/mixed-signal capability, and seamless toolchain support via ModusToolbox™ and PSoC™ Creator.
FAQ
Is CY8C4126LQA-S453 qualified for automotive use?
Yes. CY8C4126LQA-S453 is AEC-Q100 qualified to Grade-S (–40°C to +105°C), with full documentation including stress test reports, failure analysis summaries, and PPAP-ready manufacturing records. It meets automotive reliability standards for HTOL, TC, and ESD testing per AEC-Q100 Rev G.
Does this part support CAN FD or only classical CAN?
CY8C4126LQA-S453 implements CAN 2.0B with time-triggered CAN (TTCAN) support but does not support CAN FD. Its CAN controller complies with ISO 11898-1:2015 for classical CAN bit rates up to 1 Mbps and includes TTCAN scheduling registers for deterministic frame transmission.
What development tools are officially supported?
Infineon officially supports ModusToolbox™ (v3.1+) and legacy PSoC™ Creator (v4.4) for CY8C4126LQA-S453. Hardware debugging uses MiniProg3 or KitProg3 programmers. BSPs, PDL drivers, CAPSENSE™ Tuner, and CAN configuration tools are included in both IDEs with automotive-specific code examples.
Can CAPSENSE™ operate during Deep Sleep mode?
Yes. CAPSENSE™ CSD sensing can run autonomously in Deep Sleep mode using the internal ILO clock and dedicated low-power analog blocks. The device achieves <2.5 µA system current while continuously scanning up to 16 buttons, with wake-up interrupt generated upon touch detection - verified per datasheet Section 1.7.1.
CY8C4126LQA-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:
- 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 ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4126LQA-S453 FAQ
1.How can I place an order for CY8C4126LQA-S453 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126LQA-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 CY8C4126LQA-S453 reliable?
The price and inventory of CY8C4126LQA-S453 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126LQA-S453 is usually 5 days.
3.What payment methods are accepted for CY8C4126LQA-S453?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126LQA-S453 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126LQA-S453?
CY8C4126LQA-S453 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126LQA-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 CY8C4126LQA-S453?
For technical support, including CY8C4126LQA-S453 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126LQA-S453 requirements.
6.How does Aetrix verify that CY8C4126LQA-S453 is sourced from the original manufacturer or authorized distributors?
All CY8C4126LQA-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 CY8C4126LQA-S453 meets industry standards.
7.What is the process for return or replacement of CY8C4126LQA-S453?
All CY8C4126LQA-S453 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126LQA-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 CY8C4126LQA-S453 part is unused and in its original packaging.
Return procedure for CY8C4126LQA-S453:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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