My Inquiry
My Account
Infineon Technologies CY8C4126LQE-S453T
- Part No.:
- CY8C4126LQE-S453T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4126LQE-S453T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,752
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4126LQE-S453T from Infineon is an AEC-Q100 Grade-S (–40°C to +105°C) automotive-qualified PSoC™ 4100S Plus microcontroller based on the Arm® Cortex®-M0+ CPU, featuring 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 TCPWMs, a CAN 2.0B/TTCAN controller, and operates from 1.71 V to 5.5 V. Used in automotive body electronics for touch-enabled control panels requiring functional safety-aware mixed-signal integration.
For engineers reviewing the CY8C4126LQE-S453T datasheet, CY8C4126LQE-S453T pinout, CY8C4126LQE-S453T application, or CY8C4126LQE-S453T equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-chip CAPSENSE™ with SmartSense auto-tuning, CAN 2.0B + TTCAN support, Deep Sleep current of 2.5 µA, and 54 GPIO with programmable drive strength and slew rate.
Technical Context
The device integrates a 48-MHz Arm® Cortex®-M0+ core with dual-clock domain operation: IMO (±2%) and WCO (32 kHz) for low-power timing, plus ECO (4–33 MHz) and PLL for precise system clock generation. Its 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 a dedicated capacitance-sensing sigma-delta (CSD) block.
Digital resources comprise five SCBs supporting I²C/SPI/UART/LIN, a dedicated CAN 2.0B block with TTCAN compliance, eight TCPWMs with quadrature decode and comparator-triggered kill signals, and Smart I/O logic for Boolean operations on port pins - all configurable via PSoC™ Creator or ModusToolbox™ without hardware changes.
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 firmware updates, bootloader storage, and real-time data buffering without external memory. |
| Operating Voltage | 1.71 V to 5.5 V - allows direct interface with 3.3 V and 5 V automotive subsystems and simplifies power rail design. |
| Temperature Grade | AEC-Q100 Grade-S (–40°C to +105°C) - qualified for under-hood and cabin control modules meeting automotive thermal requirements. |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with >5:1 SNR and water tolerance - delivers robust touch performance in humid or condensing environments without shield layers. |
| CAN Interface | CAN 2.0B + Time-Triggered CAN (TTCAN) - supports deterministic message scheduling and synchronization for distributed automotive control networks. |
| Low-Power Mode | Deep Sleep mode with 2.5 µA digital current and active analog - enables always-on capacitive wake-up with sub-millisecond response time. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, wettable flank option for automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power supply domains | Four independent 1.71–5.5 V I/O banks 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 | All 54 pins support CAPSENSE™, analog input/output, digital logic, or SCB/CAN functions - assigned dynamically in firmware. |
| 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 USB-like clock precision. |
| CAN_TX / CAN_RX | Dedicated CAN physical layer interface | Hardwired to internal CAN controller - no software routing; supports ISO 11898-2 compliant differential signaling with internal termination. |
| WCO_IN / WCO_OUT | 32-kHz watch crystal oscillator | Enables RTC operation and Deep Sleep wake-up timing independent of main system clock; critical for low-power periodic sensing. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning across temperature/humidity - reduces firmware development time by ~70% for touch UIs. |
| Reconfigurable SCBs | Five serial blocks each independently assignable as I²C master/slave, SPI master/slave, UART, or LIN slave - enables multi-protocol sensor hub without external transceivers. |
| TCPWM kill signal | Comparator-triggered hardware shutdown of PWM outputs - provides <100 ns fault response for motor control safety-critical paths (ASIL-B compatible). |
| True Random Number Generator (TRNG) | Dedicated on-die entropy source compliant with NIST SP 800-90B - enables secure key derivation for TLS handshake and firmware authentication. |
| Programmable drive strength | Configurable 4–20 mA sink/source per GPIO - supports direct LED driving, relay control, and high-noise industrial I/O without external drivers. |
Applications
| Automotive Door Module | Touch-Based HVAC Control |
|---|---|
Use Scenario: Centralized control of window lift, mirror fold, and lock actuation with proximity detection and anti-pinch feedback. IC Role / Device Role / Timing Role: Main MCU executing motor control algorithms, CAPSENSE™ for capacitive door handle wake-up, and CAN node for Body Control Module (BCM) communication. Use Value: Single-chip integration replaces discrete MCU + touch controller + CAN transceiver, reducing BOM count by 3 components and PCB area by 28%. | Use Scenario: Climate control panel with slider, button, and rotary encoder emulation using projected capacitance. IC Role / Device Role / Timing Role: CAPSENSE™-centric controller with hardware CSD engine, SAR ADC for thermistor reading, and TCPWM for fan speed regulation. Use Value: >5:1 SNR ensures reliable touch detection under glove use and condensation; SmartSense™ maintains baseline stability across –40°C to +105°C. |
| Electric Parking Brake (EPB) Actuator | Steering Column Control Unit |
Use Scenario: Safety-critical parking brake actuation with force feedback, motor stall detection, and fail-safe release logic. IC Role / Device Role / Timing Role: ASIL-B capable controller running motor control loop at 20 kHz, monitoring current sense via IDAC + SAR ADC, and communicating over TTCAN. Use Value: Comparator-triggered TCPWM kill signal ensures <100 ns motor disable on overcurrent - meets ISO 26262 hardware fault tolerance requirements. | Use Scenario: Multi-function switch cluster managing cruise control, audio, and driver assistance toggles via capacitive overlays. IC Role / Device Role / Timing Role: Low-power CAPSENSE™ node with Deep Sleep wake-up, CAN messaging, and GPIO-driven LED indicators. Use Value: 2.5 µA Deep Sleep current enables battery-run operation for >10 years in always-listening mode; programmable slew rate suppresses EMI during LED switching. |
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 and FlexRay; lacks integrated CAPSENSE™ | Better suited for gateway or ADAS-adjacent nodes requiring higher compute or network protocols | Select when CAN FD, Ethernet, or floating-point math is required - not a drop-in replacement for touch-centric designs. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz; AEC-Q100 Grade-2 (–40°C to +105°C); no CAN FD or TTCAN support | Targeted at cost-sensitive body electronics with basic CAN 2.0A/B only and no capacitive sensing | Choose for legacy 16-bit migration where CAPSENSE™ and TTCAN are unnecessary and BOM cost is primary constraint. |
Compared with NXP S32K144W and Renesas RL78/F14, CY8C4126LQE-S453T uniquely combines AEC-Q100 Grade-S qualification, on-die CAPSENSE™ with SmartSense™, TTCAN, and sub-3 µA Deep Sleep - making it optimal for touch-enabled automotive ECUs where integration density and ultra-low-power wake-up matter most.
Availability
CY8C4126LQE-S453T is available at Aetrix Electronics and suitable for automotive body control modules, touch-based HVAC interfaces, and electric parking brake actuators requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY8C4126LQE-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, radar sensors, and security ICs, with global R&D centers and ISO/TS 16949-certified manufacturing.
CY8C4126LQE-S453T belongs to the PSoC™ 4100S Plus product line - designed specifically for automotive-grade human-machine interface (HMI) and body electronics applications demanding integrated analog sensing, deterministic real-time control, and functional safety-aware communication.
FAQ
Is CY8C4126LQE-S453T pin-compatible with other PSoC™ 4100S Plus devices?
Yes - it shares the same 48-pin QFN footprint and pin function mapping with CY8C4127LQI-S443 and CY8C4128LQI-S443, enabling hardware reuse across flash/SRAM variants. However, GPIO-to-peripheral routing must be revalidated in PSoC™ Creator due to differences in analog block allocation and SCB count.
Does CY8C4126LQE-S453T support CAN FD?
No - it implements CAN 2.0B with Time-Triggered CAN (TTCAN) extensions only. CAN FD frame support requires CY8C6xx series devices. TTCAN enables deterministic scheduling and synchronization for safety-critical automotive networks but does not increase data payload beyond 8 bytes per frame.
What development tools are officially supported for this part?
Infineon officially supports PSoC™ Creator (legacy Windows IDE) and ModusToolbox™ (cross-platform). Both provide full peripheral configuration, CAPSENSE™ tuning GUI, TCPWM code generation, and debug via KitProg3 or MiniProg4. Third-party tools like Keil MDK and IAR Embedded Workbench require PDL-based HAL integration.
Can the on-chip opamps be used for sensor signal conditioning in automotive temperature ranges?
Yes - both opamps operate across the full Grade-S range (–40°C to +105°C) with guaranteed offset voltage drift ≤3 µV/°C and gain error <0.5%. They support rail-to-rail input/output and can buffer SAR ADC inputs directly, eliminating need for external instrumentation amplifiers in thermistor or RTD front-ends.
CY8C4126LQE-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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4126LQE-S453T FAQ
1.How can I place an order for CY8C4126LQE-S453T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4126LQE-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 CY8C4126LQE-S453T reliable?
The price and inventory of CY8C4126LQE-S453T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4126LQE-S453T is usually 5 days.
3.What payment methods are accepted for CY8C4126LQE-S453T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4126LQE-S453T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4126LQE-S453T?
CY8C4126LQE-S453T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4126LQE-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 CY8C4126LQE-S453T?
For technical support, including CY8C4126LQE-S453T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4126LQE-S453T requirements.
6.How does Aetrix verify that CY8C4126LQE-S453T is sourced from the original manufacturer or authorized distributors?
All CY8C4126LQE-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 CY8C4126LQE-S453T meets industry standards.
7.What is the process for return or replacement of CY8C4126LQE-S453T?
All CY8C4126LQE-S453T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4126LQE-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 CY8C4126LQE-S453T part is unused and in its original packaging.
Return procedure for CY8C4126LQE-S453T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4126LQE-S453T Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
