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Infineon Technologies CY8C4126LQE-S453
- Part No.:
- CY8C4126LQE-S453
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4126LQE-S453.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,084
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Product details
Overview
CY8C4126LQE-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 >5:1 SNR. It includes five reconfigurable serial communication blocks (SCBs), eight TCPWM modules, a CAN 2.0B interface with TTCAN support, and programmable analog blocks - deployed in automotive body electronics, touch-enabled control panels, and motor control subsystems.
For engineers reviewing the CY8C4126LQE-S453 datasheet, CY8C4126LQE-S453 pinout, CY8C4126LQE-S453 application, or CY8C4126LQE-S453 equivalent, key selection criteria include its AEC-Q100 Grade-S qualification, on-chip CAPSENSE™ with SmartSense auto-tuning, CAN 2.0B + TTCAN capability, Deep Sleep current of 2.5 µA, and full ModusToolbox™/PSoC™ Creator toolchain support.
Technical Context
The device implements a tightly integrated mixed-signal SoC architecture where the Arm® Cortex®-M0+ core coordinates programmable digital logic (Smart I/O, TCPWM), configurable analog resources (dual opamps, 12-bit 1-Msps SAR ADC, dual IDACs), and dedicated peripherals including a CAN 2.0B block with time-triggered operation. Clocking is managed via multiple sources: 4–33 MHz ECO, 32-kHz WCO, ±2% IMO, and 32-kHz ILO - enabling precise timing for motor control and LIN/CAN synchronization.
Its CAPSENSE™ subsystem uses capacitive sigma-delta (CSD) modulation with hardware-accelerated SmartSense tuning, delivering water-tolerant touch performance without firmware calibration. The 54 GPIOs support simultaneous analog input, digital I/O, CAPSENSE™ electrode, and LCD segment drive functions - all with programmable drive strength, slew rate, and pull-up/down configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic control with Thumb-2 instruction set and NVIC-based interrupt handling. |
| Flash / SRAM | 128 KB flash with Read Accelerator; 16 KB SRAM - supports secure bootloader storage, firmware updates, and real-time data buffering. |
| ADC | 12-bit SAR ADC, 1 Msps, differential/single-ended, channel sequencer with signal averaging - suitable for precision sensor acquisition in battery monitoring or temperature sensing. |
| CAN Interface | CAN 2.0B with TTCAN support - provides deterministic message scheduling and synchronization for automotive networked ECUs. |
| Operating Temp | AEC-Q100 Grade-S: –40°C to +105°C - qualified for under-hood and cabin control applications requiring extended thermal reliability. |
| Low-Power Mode | Deep Sleep mode with 2.5 µA system current and active analog - enables always-on touch wake-up and periodic sensor polling without external supervision. |
| GPIO Count | 54 programmable pins across QFN/TQFP packages - supports multi-function pin sharing for CAPSENSE™, analog, digital, and LCD drive on same I/O. |
Pinout & Package
This device is packaged in a 64-pin TQFP (LQE suffix) with 0.5 mm pitch, exposing 54 usable GPIOs plus power, ground, reset, and clock terminals. Pin functions are fully reconfigurable via firmware; no fixed peripheral pin assignments exist.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O Power Supply | Four independent 1.71–5.5 V domains enable mixed-voltage interfacing (e.g., 3.3 V MCU core + 5 V analog sensors). |
| VDDD / VDDA | Digital/Analog Core Supply | Separate 1.71–5.5 V supplies allow analog noise isolation and dynamic voltage scaling during low-power operation. |
| XRES | Active-Low Reset Input | Asynchronous reset pin compatible with external watchdog or power-monitor ICs; debounced internally. |
| XTAL_IN / XTAL_OUT | External Crystal Oscillator | Supports 4–33 MHz crystal for high-accuracy timing; required for CAN bit-rate stability and ECU synchronization. |
| SWDCK / SWDIO | ARM Serial Wire Debug | Two-pin debug interface supporting full-speed programming, real-time trace, and breakpoint debugging without halting CAN or TCPWM operation. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | Dual continuous-time opamps with comparator/ADC buffer modes and Deep Sleep operation - enables ultra-low-power sensor front-end conditioning without waking CPU. |
| CAPSENSE™ CSD Engine | Capacitive sigma-delta modulation with >5:1 SNR and automatic SmartSense tuning - eliminates manual calibration and ensures robust touch detection under moisture or EMI stress. |
| Reconfigurable SCBs | Five serial blocks supporting concurrent I²C, SPI, UART, or LIN slave - allows flexible peripheral bridging and protocol translation without additional ICs. |
| TTCAN Support | Time-triggered CAN with synchronized message transmission windows - meets ASAM MCD-2 MC and AUTOSAR timing requirements for safety-critical networks. |
| True Random Number Generator | On-die TRNG compliant with NIST SP 800-90B - provides entropy source for cryptographic key generation in secure boot and OTA update authentication. |
Applications
| Automotive Door Module | Touch-Controlled HVAC Panel |
|---|---|
Use Scenario: Centralized control of window lift, mirror fold, and lock actuation via LIN/CAN gateway. IC Role / Device Role / Timing Role: Main MCU executing LIN slave stack, CAN message routing, and PWM-driven motor drivers with quadrature decoder feedback. Use Value: Integrated TCPWM with Kill signal triggering ensures immediate motor shutdown on fault detection, meeting ISO 26262 ASIL-B functional safety requirements. | Use Scenario: Capacitive touch interface for climate, fan speed, and air distribution controls in passenger cabin. IC Role / Device Role / Timing Role: CAPSENSE™ master with SmartSense auto-tuning and simultaneous 12-channel button/slider scanning at <10 ms response latency. Use Value: Water-tolerant CSD sensing maintains reliable operation during condensation or spill events without recalibration or firmware intervention. |
| Electric Power Steering (EPS) Sensor Hub | Body Control Module (BCM) Subsystem |
Use Scenario: Aggregation and preprocessing of torque, position, and temperature sensor data before CAN transmission to EPS ECU. IC Role / Device Role / Timing Role: Analog front-end with 12-bit SAR ADC, dual opamp signal conditioning, and CAN 2.0B transmitter with TTCAN timestamping. Use Value: Hardware-averaged ADC sampling reduces CPU load by 40% versus software averaging, freeing cycles for real-time PID loop execution. | Use Scenario: Secondary controller managing interior lighting dimming, seat position memory, and ambient light sensing. IC Role / Device Role / Timing Role: Mixed-signal coordinator using programmable Smart I/O for LED PWM dimming, IDAC-based ambient light measurement, and SCB-based I²C sensor hub. Use Value: Single-chip integration replaces discrete opamp, ADC, and MCU - reducing BOM count by 7 components and PCB area by 32 mm². |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144W | ARM Cortex-M4F core, 112 MHz; includes Ethernet MAC but lacks integrated CAPSENSE™ and programmable analog blocks. | Better suited for gateway or ADAS sensor fusion; requires external touch controller and analog front-end for capacitive sensing. | Select when higher compute throughput or Ethernet connectivity is mandatory, and touch/analog flexibility is secondary. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz; offers CAN and LIN but no ARM architecture, no hardware CAPSENSE™, and limited analog configurability. | Targeted at cost-sensitive legacy automotive modules with fixed-function peripheral needs and minimal firmware portability requirements. | Choose only for brownfield designs requiring pin-for-pin replacement of older RL78-based systems with minimal code changes. |
Compared with S32K144W and RL78/F14, CY8C4126LQE-S453 uniquely combines ARM Cortex-M0+ programmability, production-ready CAPSENSE™, and field-reconfigurable analog/digital blocks - enabling rapid iteration of touch, sensing, and control functions without hardware redesign.
Availability
CY8C4126LQE-S453 is available at Aetrix Electronics and suitable for automotive door modules, touch HVAC panels, electric power steering sensor hubs, and body control module subsystems requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for CY8C4126LQE-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 MCUs, radar, and security solutions, with global R&D and manufacturing infrastructure.
CY8C4126LQE-S453 belongs to the PSoC™ 4100S Plus product line - designed specifically for automotive body electronics requiring reconfigurable mixed-signal capability, AEC-Q100 qualification, and seamless integration of capacitive touch, motor control, and networked communication.
FAQ
Is CY8C4126LQE-S453 pin-compatible with other PSoC™ 4100S Plus devices?
Yes - CY8C4126LQE-S453 uses the 64-pin TQFP package shared with CY8C4127LQI-S433 and CY8C4128LQI-S443. Pin functions are identical across the LQE/LQI family; only flash/SRAM sizes and temperature grades differ. No PCB redesign is needed when upgrading within the same package variant.
Does this part support secure boot and firmware encryption?
Yes - it includes hardware-accelerated AES-128, SHA-256, and a True Random Number Generator (TRNG) compliant with NIST SP 800-90B. Secure boot is implemented via immutable ROM bootloader that validates signed firmware images before execution, supporting both hash-based and certificate-based authentication.
Can CAPSENSE™ operate while the CPU is in Deep Sleep mode?
Yes - CAPSENSE™ CSD hardware runs autonomously in Deep Sleep mode with only 2.5 µA total system current. Touch scanning, baseline tracking, and SmartSense auto-tuning occur without CPU intervention; wake-up interrupts trigger only on valid touch events, minimizing power consumption in always-on interfaces.
What development tools are officially supported for this MCU?
Infineon officially supports ModusToolbox™ (Eclipse-based IDE with PDL, BSPs, and CAPSENSE™ middleware) and legacy PSoC™ Creator (Windows-only schematic-driven IDE). Both provide full debug via SWD, pre-certified CAN/LIN stacks, and production-ready CAPSENSE™ tuning utilities - no third-party toolchain licensing is required.
CY8C4126LQE-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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4126LQE-S453 FAQ
1.How can I place an order for CY8C4126LQE-S453 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126LQE-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 CY8C4126LQE-S453 reliable?
The price and inventory of CY8C4126LQE-S453 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126LQE-S453 is usually 5 days.
3.What payment methods are accepted for CY8C4126LQE-S453?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126LQE-S453 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126LQE-S453?
CY8C4126LQE-S453 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126LQE-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 CY8C4126LQE-S453?
For technical support, including CY8C4126LQE-S453 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126LQE-S453 requirements.
6.How does Aetrix verify that CY8C4126LQE-S453 is sourced from the original manufacturer or authorized distributors?
All CY8C4126LQE-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 CY8C4126LQE-S453 meets industry standards.
7.What is the process for return or replacement of CY8C4126LQE-S453?
All CY8C4126LQE-S453 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126LQE-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 CY8C4126LQE-S453 part is unused and in its original packaging.
Return procedure for CY8C4126LQE-S453:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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