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Infineon Technologies CY8C4127LQA-S443
- Part No.:
- CY8C4127LQA-S443
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4127LQA-S443.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,196
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Product details
Overview
CY8C4127LQA-S443 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), eight 16-bit TCPWM units, CAN 2.0B with TTCAN support, and programmable analog/digital logic for embedded control in automotive body electronics.
For engineers reviewing the CY8C4127LQA-S443 datasheet, CY8C4127LQA-S443 pinout, CY8C4127LQA-S443 application, or CY8C4127LQA-S443 equivalent, key selection criteria include its AEC-Q100 qualification, Deep Sleep current of 2.5 µA, 54 GPIO with configurable drive modes, CSD-based SNR > 5:1, and hardware-accelerated CAPSENSE™ with water tolerance - all validated for automotive interior sensing and motor control subsystems.
Technical Context
This device implements a mixed-signal SoC architecture where the Arm® Cortex®-M0+ core executes firmware while programmable analog blocks (CTB opamps, SAR ADC, IDACs) and digital logic (Smart I/O, TCPWM, SCB) operate independently under hardware routing. Its clock system integrates ECO (4–33 MHz), PLL (48 MHz), WCO (32 kHz), IMO (±2%), and ILO for precise timing across sleep/wake states.
The CAN block supports time-triggered operation (TTCAN) with dedicated message RAM and error counters, while CAPSENSE™ uses sigma-delta modulation with hardware-accelerated baseline tracking and noise rejection - enabling robust touch interfaces without host CPU intervention in low-power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - deterministic real-time execution with Thumb-2 instruction set and NVIC for priority-based interrupt handling. |
| Memory | 128 KB flash (with Read Accelerator), 16 KB SRAM - sufficient for AUTOSAR-compliant bootloaders and dual-bank firmware updates. |
| Operating Voltage | 1.71 V to 5.5 V - supports direct connection to 3.3 V or 5 V automotive power domains without level-shifting. |
| Low-Power Mode | Deep Sleep at 2.5 µA digital current - enables always-on capacitive wake-up with analog peripherals active. |
| CAPSENSE™ Performance | Sigma-delta CSD with SNR > 5:1 and water tolerance - validated for glove-friendly, wet-environment touch controls in door modules and center consoles. |
| CAN Interface | CAN 2.0B with TTCAN support - provides deterministic message scheduling and synchronization for distributed chassis control networks. |
| GPIO Count | 54 programmable pins - all support CAPSENSE™, analog input/output, or digital logic; each configurable for drive strength, slew rate, and pull-up/down. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad. Pin mapping follows Infineon's CY8C4127LQA-S443-specific pinout diagram (Document 002-20072 Rev. *S, Section 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power supply rails | Independent 1.71–5.5 V domains per port group - enable mixed-voltage interfacing (e.g., 3.3 V MCU logic with 5 V sensor outputs). |
| P0.0–P9.7 | Programmable GPIO | 54 total pins; each supports CAPSENSE™ electrode, analog input, comparator output, or PWM output - routed via hardware interconnect matrix. |
| XTAL_IN/XTAL_OUT | External crystal oscillator interface | Connects to 4–33 MHz ECO for high-accuracy timing; required for CAN bit timing stability and USB-like clock derivation. |
| WCO_IN/WCO_OUT | 32-kHz watch crystal oscillator | Enables RTC operation and low-power wake-up timing independent of main clock domain. |
| CAN_TX/CAN_RX | Dedicated CAN transceiver interface | Direct connection to external CAN PHY; supports dominant/recessive state detection and bus fault monitoring per ISO 11898-2. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CAPSENSE™ Engine | Offloads touch scanning, baseline tracking, and noise filtering from CPU - reduces firmware overhead and enables sub-10 ms scan cycles with 10-bit resolution. |
| Smart I/O Logic | Configurable Boolean logic on GPIO inputs/outputs - implements debounce, edge detection, or state machines without CPU involvement or additional discrete logic. |
| TTCAN Support | Time-triggered scheduling with guaranteed message latency - meets ASAM MCD-2 MC requirements for synchronized actuator control in ADAS domain controllers. |
| Programmable Analog Blocks | Two CTB opamps with internal/external drive modes and ADC input buffering - allows single-chip signal conditioning for current sensing or battery voltage monitoring. |
| TRNG | True random number generator compliant with NIST SP 800-90A - enables secure key generation for TLS handshake and firmware authentication in OTA update workflows. |
Applications
| Automotive Door Module Control | Center Console Touch Interface |
|---|---|
Use Scenario: Integrated control of window lift, mirror adjustment, and lock actuation with local feedback sensing. IC Role / Device Role / Timing Role: Main MCU executing LIN slave protocol, driving H-bridge gate drivers via PWM, and sampling hall-effect and potentiometer sensors. Use Value: Single-chip solution eliminates external opamps and comparators; Deep Sleep mode enables proximity wake-up via CAPSENSE™ before full system power-up. | Use Scenario: Multi-button, slider, and proximity-capacitive interface on vehicle center stack with wet-hand and glove operation. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ controller with hardware sigma-delta modulation and SmartSense auto-calibration. Use Value: SNR > 5:1 and water tolerance ensure reliable detection under condensation or spilled liquids; no host CPU polling required during active sensing. |
| Chassis Domain Controller | Electric Parking Brake (EPB) Actuator |
Use Scenario: Coordinating brake caliper position, temperature, and motor current across multiple wheels using CAN FD backbone. IC Role / Device Role / Timing Role: CAN 2.0B node with TTCAN scheduling, running safety-critical motor control loops at 10 kHz via TCPWM with kill-input triggering. Use Value: Hardware comparator-triggered PWM shutdown ensures < 1 µs response to overcurrent faults - meeting ISO 26262 ASIL-B timing constraints. | Use Scenario: Closed-loop control of EPB motor with position feedback, thermal monitoring, and fail-safe release sequencing. IC Role / Device Role / Timing Role: Real-time MCU managing dual H-bridge drivers, sampling current sense amplifiers via SAR ADC, and logging fault events to nonvolatile flash. Use Value: 12-bit SAR ADC with channel sequencer and averaging enables accurate current measurement across four motor phases; 128 KB flash supports dual-bank firmware for safe field updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4127LQI-S433 | Same die, 40-pin QFN package, 16 KB SRAM, no CAN block | Lacks CAN 2.0B and TTCAN; limited to LIN-only or isolated sensor nodes | Select when CAN is unnecessary and board space requires smaller footprint. |
| SPC560B50L5 | Power Architecture e200z0h core, 64 MHz, 512 KB flash, ASIL-B certified | Higher functional safety certification; larger memory; no integrated CAPSENSE™ | Select for ASIL-B–compliant powertrain or braking systems requiring certified toolchain and safety manual. |
Compared with CY8C4127LQA-S443, CY8C4127LQI-S433 sacrifices CAN and package I/O count for cost and size reduction, while SPC560B50L5 trades programmable analog/digital flexibility for higher safety certification and deterministic powertrain timing - making CY8C4127LQA-S443 optimal for cost-sensitive, feature-rich body electronics with integrated sensing.
Availability
CY8C4127LQA-S443 is available at Aetrix Electronics and suitable for automotive door modules, center console touch interfaces, chassis domain controllers, and electric parking brake actuators requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for CY8C4127LQA-S443 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.
CY8C4127LQA-S443 belongs to the PSoC™ 4100S Plus product line, designed specifically for automotive body electronics requiring integrated capacitive sensing, CAN connectivity, and low-power mixed-signal processing in harsh environments.
FAQ
Is CY8C4127LQA-S443 qualified for automotive use?
Yes. It is AEC-Q100 qualified for Grade-S (–40°C to +105°C), with full qualification testing including HTOL, TC, UHAST, and ESD per JESD22 standards. The device meets automotive reliability and failure rate requirements for body electronics applications such as door modules and center consoles.
Does CY8C4127LQA-S443 support CAN FD?
No. It implements CAN 2.0B with time-triggered capability (TTCAN), but does not support CAN FD data rates or extended frame formats. For CAN FD, consider Infineon's TRAVEO™ T2G or AURIX™ families - this part targets deterministic, lower-bandwidth chassis networking where TTCAN suffices.
Can CAPSENSE™ operate during Deep Sleep mode?
Yes. CAPSENSE™ hardware operates autonomously in Deep Sleep mode with 2.5 µA system current. The CSD block performs full scanning, baseline update, and noise filtering without waking the CPU, enabling ultra-low-power proximity wake-up and gesture detection in always-on automotive interfaces.
What development tools are supported for CY8C4127LQA-S443?
Infineon supports both PSoC™ Creator (legacy Windows IDE with schematic-based design) and ModusToolbox™ (cross-platform, Eclipse-based, CLI-driven). Both provide CAPSENSE™ Tuner, TCPWM configurator, and CAN API libraries. Debugging uses KitProg3 or MiniProg3 via SWD interface; Arduino-compatible shields are supported via CY8CKIT-041-41XX.
CY8C4127LQA-S443 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4000S
- 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, 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4127LQA-S443 FAQ
1.How can I place an order for CY8C4127LQA-S443 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127LQA-S443 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 CY8C4127LQA-S443 reliable?
The price and inventory of CY8C4127LQA-S443 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127LQA-S443 is usually 5 days.
3.What payment methods are accepted for CY8C4127LQA-S443?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4127LQA-S443 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4127LQA-S443?
CY8C4127LQA-S443 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127LQA-S443 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 CY8C4127LQA-S443?
For technical support, including CY8C4127LQA-S443 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127LQA-S443 requirements.
6.How does Aetrix verify that CY8C4127LQA-S443 is sourced from the original manufacturer or authorized distributors?
All CY8C4127LQA-S443 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 CY8C4127LQA-S443 meets industry standards.
7.What is the process for return or replacement of CY8C4127LQA-S443?
All CY8C4127LQA-S443 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127LQA-S443, 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 CY8C4127LQA-S443 part is unused and in its original packaging.
Return procedure for CY8C4127LQA-S443:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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