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Infineon Technologies CY8C4127LQE-S443T
- Part No.:
- CY8C4127LQE-S443T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4127LQE-S443T.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,876
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Product details
Overview
CY8C4127LQE-S443T 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 delivers programmable analog (2 opamps, 12-bit 1-Msps SAR ADC, 2 IDACs), digital logic (8 TCPWM, 5 SCBs), CAN 2.0B with TTCAN support, and operates from 1.71 V to 5.5 V - deployed in automotive body control modules requiring robust touch HMI and motor timing.
For engineers reviewing the CY8C4127LQE-S443T datasheet, CY8C4127LQE-S443T pinout, CY8C4127LQE-S443T application, or CY8C4127LQE-S443T equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-die CAPSENSE™ SNR >5:1, CAN 2.0B + TTCAN compliance, Deep Sleep current ≤2.5 µA, and QFN-48 package compatibility with automotive PCB layout constraints.
Technical Context
This device implements a tightly integrated mixed-signal SoC architecture where the Arm® Cortex®-M0+ core coordinates reconfigurable analog blocks (CTB, SAR ADC, LPC) and digital peripherals (TCPWM, SCB, CAN) via a unified routing fabric. Its clock system combines ECO (4–33 MHz), PLL (48 MHz output), WCO (32 kHz), IMO (±2%), and ILO for precise timing across sleep/wake states.
The CAPSENSE™ subsystem uses capacitive sigma-delta (CSD) modulation with hardware-accelerated SmartSense tuning, enabling water-tolerant touch detection without firmware calibration. The CAN block supports time-triggered operation (TTCAN) with dedicated message RAM and error counters compliant with ISO 11898-1:2015.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz - deterministic real-time execution with Thumb-2 instruction set and NVIC for automotive interrupt latency control. |
| Flash / SRAM | 128 KB flash with Read Accelerator + 16 KB SRAM - enables secure bootloader storage, OTA update partitioning, and real-time sensor buffer allocation. |
| ADC | 12-bit SAR ADC, 1 Msps, differential/single-ended, channel sequencer with signal averaging - supports simultaneous multi-sensor sampling (e.g., temperature, voltage, position) in BMS or HVAC control. |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with SNR >5:1 and automatic SmartSense tuning - achieves reliable touch detection through wet or gloved conditions in automotive door handles or center consoles. |
| CAN Interface | CAN 2.0B with TTCAN support - provides deterministic message scheduling, timestamping, and synchronization for chassis domain controllers and ADAS gateway nodes. |
| Power Range | 1.71 V to 5.5 V supply - allows direct connection to 3.3 V or 5 V automotive domains without external LDO, reducing BOM count in body electronics. |
| GPIO Count | Up to 54 programmable pins in QFN-48 package - all support CAPSENSE™, analog input, or digital logic with configurable drive strength and slew rate for EMI control. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad. RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power domains | Independent 1.71–5.5 V supplies per port group - enables mixed-voltage interfacing (e.g., 3.3 V MCU logic + 5 V sensor interface) without level shifters. |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | Each pin supports CAPSENSE™, analog input/output, digital logic, or serial communication - routed dynamically via hardware interconnect matrix, not fixed peripheral mapping. |
| XTAL_IN / XTAL_OUT | External crystal oscillator input | Supports 4–33 MHz ECO for high-accuracy timing - required for CAN bit timing precision and clock recovery in LIN slave mode. |
| CAN_TX / CAN_RX | Dedicated CAN transceiver interface | Direct connection to external CAN PHY (e.g., TJA1042) - no software bit-banging; hardware message filtering and FIFO reduce CPU load in networked ECUs. |
| SWDCLK / SWDIO | ARM Serial Wire Debug interface | Two-pin debug port supporting flash programming, real-time trace, and breakpoint debugging - essential for ISO 26262 ASIL-B development and validation. |
Key Features
| Feature | Design Value |
|---|---|
| Deep Sleep mode with active analog | 2.5 µA system current while maintaining opamp/ADC/comparator operation - enables always-on capacitive wake-up in door handle or ignition switch applications. |
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminating manual firmware tuning - reduces development time by >70% for touch HMI certification (e.g., ISO 12641-2). |
| Configurable SCBs | Five independent serial blocks supporting I²C/SPI/UART/LIN slave in any combination - allows single-device integration of LIN body gateway + SPI sensor hub + I²C EEPROM without external logic. |
| TTCAN support | Time-triggered communication with synchronized local time base - ensures deterministic message transmission for safety-critical actuator control in electric power steering modules. |
| True Random Number Generator (TRNG) | Digital entropy source compliant with NIST SP 800-90B - enables secure key generation for TLS handshake in telematics units without external crypto IC. |
Applications
| Automotive Door Module | Body Control Unit (BCU) |
|---|---|
Use Scenario: Capacitive touch detection on exterior door handles under rain, ice, or glove contact. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ CSD algorithm, CAN message framing, and low-power wake-up state machine. Use Value: Water-tolerant SNR >5:1 sensing eliminates mechanical switches, while TTCAN synchronizes lock/unlock commands with central gateway. | Use Scenario: Centralized control of interior lighting, window lift, mirror adjustment, and seat position memory. IC Role / Device Role / Timing Role: System controller managing LIN slave nodes (e.g., switches, actuators) and CAN backbone communication. Use Value: Five reconfigurable SCBs enable concurrent LIN (for switches), SPI (for EEPROM), and I²C (for ambient light sensor) without external bridge ICs. |
| Electric Power Steering (EPS) Sensor Hub | Telematics Control Unit (TCU) Secure Boot |
Use Scenario: Aggregation and preprocessing of torque, angle, and motor current sensor data before CAN transmission to EPS ECU. IC Role / Device Role / Timing Role: Signal conditioning node with 12-bit SAR ADC oversampling, opamp-based current sensing, and TCPWM-based PWM generation for motor feedback. Use Value: On-die analog blocks eliminate discrete opamp/ADC components; Deep Sleep mode enables periodic sensor wake-up at <3 µA. | Use Scenario: Secure boot verification and runtime attestation of firmware images in cellular-connected vehicle gateways. IC Role / Device Role / Timing Role: Root-of-trust MCU generating cryptographic keys via TRNG and validating signed firmware using internal flash ECC protection. Use Value: Hardware TRNG + flash read accelerator enables fast, tamper-resistant signature verification meeting UNECE R155 CSMS requirements. |
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, 1 MB flash, no integrated CAPSENSE™, includes Ethernet MAC | Targeted at higher-performance gateway/routing applications; lacks on-die capacitive sensing hardware | Select when Ethernet connectivity or floating-point math acceleration is required over touch HMI integration. |
| Renesas RL78/F14 | RL78 core, 32 MHz, 512 KB flash, 64 KB RAM, no CAN FD or TTCAN, limited analog resources | Cost-optimized for basic body electronics; lacks SmartSense, Deep Sleep analog retention, and CSD SNR performance | Select only for non-safety-critical, low-pin-count applications where AEC-Q100 Grade-S and CAPSENSE™ are not required. |
Compared with S32K144W and RL78/F14, CY8C4127LQE-S443T uniquely integrates CAPSENSE™ with hardware SmartSense, maintains analog functionality in Deep Sleep at 2.5 µA, and delivers TTCAN timing determinism - making it optimal for automotive human-machine interface and distributed sensor nodes where mixed-signal integration and ultra-low-power wake-up are critical.
Availability
CY8C4127LQE-S443T is available at Aetrix Electronics and suitable for automotive body electronics, capacitive touch HMI systems, and CAN-based sensor aggregation nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY8C4127LQE-S443T 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 solutions, with global manufacturing and R&D centers.
CY8C4127LQE-S443T belongs to the PSoC™ 4100S Plus product line, designed specifically for AEC-Q100-compliant automotive applications demanding integrated capacitive sensing, deterministic CAN communication, and ultra-low-power operation in harsh environments.
FAQ
Does CY8C4127LQE-S443T support CAN FD?
No. This device implements CAN 2.0B with time-triggered capability (TTCAN) per ISO 11898-1:2015, but does not support CAN FD data rates or flexible data-length frames. It is intended for deterministic control messaging in body and chassis domains where legacy CAN bandwidth suffices.
What development tools are officially supported for this part?
Infineon officially supports ModusToolbox™ (v3.1+) and PSoC™ Creator (v4.4) for firmware development, along with CY8CKIT-149 prototyping kit and MiniProg3 programmer/debugger. Both IDEs provide full register-level access, CAPSENSE™ Tuner GUI integration, and pre-certified CAN stack libraries.
Is the 12-bit SAR ADC capable of simultaneous sampling across multiple channels?
No. The SAR ADC uses a single conversion engine with hardware channel sequencing and averaging, but lacks true simultaneous sampling. For multi-channel phase-aligned acquisition (e.g., motor current/voltage), external analog front-end synchronization or external dual ADCs are required.
How is AEC-Q100 Grade-S qualification verified for this device?
AEC-Q100 Grade-S qualification was validated per stress test requirements including HTOL (1000 hrs at 125°C junction), TC (1000 cycles –40°C to +125°C), and ESD (HBM ±2 kV). Test reports are available under NDA from Infineon's Automotive Qualification Summary document 002-20072 Rev. *S.
CY8C4127LQE-S443T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4000S
- Packaging:
- Tape & Reel (TR)
- 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, DMA, LCD, POR, PWM, Temp Sensor, TRNG, WDT
- Number of I/O:
- 34
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x10b SAR, 16x12b Sigma-Delta
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4127LQE-S443T FAQ
1.How can I place an order for CY8C4127LQE-S443T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127LQE-S443T 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 CY8C4127LQE-S443T reliable?
The price and inventory of CY8C4127LQE-S443T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127LQE-S443T is usually 5 days.
3.What payment methods are accepted for CY8C4127LQE-S443T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4127LQE-S443T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4127LQE-S443T?
CY8C4127LQE-S443T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127LQE-S443T 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 CY8C4127LQE-S443T?
For technical support, including CY8C4127LQE-S443T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127LQE-S443T requirements.
6.How does Aetrix verify that CY8C4127LQE-S443T is sourced from the original manufacturer or authorized distributors?
All CY8C4127LQE-S443T 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 CY8C4127LQE-S443T meets industry standards.
7.What is the process for return or replacement of CY8C4127LQE-S443T?
All CY8C4127LQE-S443T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127LQE-S443T, 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 CY8C4127LQE-S443T part is unused and in its original packaging.
Return procedure for CY8C4127LQE-S443T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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