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Infineon Technologies CY8C4127LQS-S443
- Part No.:
- CY8C4127LQS-S443
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4127LQS-S443.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,407
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Product details
Overview
CY8C4127LQS-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 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 LCD segment drive - deployed in automotive body control modules requiring robust touch HMI and real-time motor timing.
For engineers reviewing the CY8C4127LQS-S443 datasheet, CY8C4127LQS-S443 pinout, CY8C4127LQS-S443 application, or CY8C4127LQS-S443 equivalent, key selection criteria include AEC-Q100 Grade-S qualification, 54 GPIO with CAPSENSE™/analog/digital reconfigurability, Deep Sleep current of 2.5 µA, CAN 2.0B + TTCAN compliance, and ModusToolbox™/PSoC™ Creator toolchain integration.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ core executes firmware while programmable analog blocks (CTB, SAR ADC, LPC) and digital blocks (TCPWM, SCB, CAN) operate concurrently under hardware routing control. 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.
Capacitive sensing uses sigma-delta (CSD) modulation with >5:1 SNR and water-tolerant operation, enabled by dedicated hardware acceleration and SmartSense automatic calibration. The CAN block supports time-triggered communication with configurable message objects and error handling per ISO 11898-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables deterministic real-time control with Thumb-2 instruction set and NVIC interrupt handling. |
| Flash / SRAM | 128 KB flash with Read Accelerator; 16 KB SRAM - supports complex automotive firmware with fast code execution and data buffering. |
| Operating Voltage | 1.71 V to 5.5 V - allows direct interface with 3.3 V and 5 V automotive subsystems without level-shifting. |
| Deep Sleep Current | 2.5 µA digital system current - enables ultra-low-power wake-on-touch or CAN bus activity in always-on vehicle modules. |
| CAPSENSE™ Performance | Sigma-delta CSD with >5:1 SNR and water tolerance - ensures reliable touch detection in humid or condensing environments (e.g., center console). |
| CAN Interface | CAN 2.0B + TTCAN support - provides deterministic, time-synchronized messaging for body domain controllers and gateway nodes. |
| GPIO Count | 54 programmable pins - all support CAPSENSE™, analog input/output, or digital logic with configurable drive strength and slew rate. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, wettable flank option available.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power supply domains | Independent 1.71–5.5 V supplies per port group 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 | Each pin supports CAPSENSE™, analog input/output, digital logic, or serial peripheral functions via hardware routing matrix. |
| CAN_TX / CAN_RX | Dedicated CAN transceiver interface | Hardwired to internal CAN controller; requires external high-speed CAN transceiver (e.g., TJA1042) for bus connection. |
| XTAL_IN / XTAL_OUT | External crystal oscillator terminals | Support 4–33 MHz ECO for precise timing; essential for CAN bit timing accuracy and USB-free clocking. |
| WCO_IN / WCO_OUT | 32-kHz watch crystal oscillator | Enables RTC functionality and low-power wake-up timing independent of main clock domain. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning and compensates for environmental drift (temperature/humidity) in production. |
| Reconfigurable SCBs | Five serial communication blocks dynamically switch between I²C, SPI, UART, or LIN slave modes at runtime - reduces BOM count and simplifies firmware updates. |
| Deep Sleep Analog Operation | Opamps and comparators remain active during 2.5 µA Deep Sleep - enables continuous sensor monitoring (e.g., door handle proximity) without waking CPU. |
| TTCAN Support | Time-triggered CAN scheduling with guaranteed message transmission windows - meets ASAM MCD-2 MC and AUTOSAR COM stack timing requirements. |
| Programmable Logic (Smart I/O) | Boolean logic on GPIO inputs/outputs without CPU intervention - implements debounce, edge detection, or state machines in hardware for deterministic response. |
Applications
| Automotive Door Module | Center Console Touch HMI |
|---|---|
Use Scenario: Integrated control of power windows, locks, mirrors, and ambient lighting with capacitive touch feedback. IC Role / Device Role / Timing Role: Primary MCU executing body control firmware, managing CAN communication with gateway, and running CAPSENSE™ for touch-sensitive switches. Use Value: Single-chip solution replaces discrete MCU + touch controller + CAN transceiver, reducing PCB area by 35% and enabling AEC-Q100-compliant design. | Use Scenario: Multi-function infotainment panel with swipe-capable sliders, rotary encoders, and backlight dimming. IC Role / Device Role / Timing Role: CAPSENSE™-centric controller with hardware-accelerated CSD, SAR ADC for slider position, and PWM for LED dimming. Use Value: >5:1 SNR ensures reliable gesture recognition even with condensation or glove use; SmartSense eliminates factory calibration steps. |
| Engine Bay Sensor Hub | Seat Occupancy Detection System |
Use Scenario: Aggregation and preprocessing of temperature, pressure, and humidity sensors near engine compartment. IC Role / Device Role / Timing Role: Low-power sensor fusion node with Deep Sleep operation, wake-on-analog-threshold, and CAN reporting. Use Value: 2.5 µA Deep Sleep current extends battery life in always-on diagnostic mode; 12-bit SAR ADC enables high-resolution sensor digitization. | Use Scenario: Capacitive seat mat sensing for occupant classification and airbag deployment logic. IC Role / Device Role / Timing Role: Dedicated CAPSENSE™ subsystem with differential CSD measurement and hardware averaging for noise immunity. Use Value: Water-tolerant CSD operation prevents false triggers from spilled liquids; programmable IDACs allow adaptive current sourcing per electrode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144 | ARM Cortex-M4F core, 112 MHz; includes Ethernet MAC and more CAN FD channels; no integrated CAPSENSE™ | Better suited for gateway or ADAS-adjacent nodes requiring higher compute or networking; lacks native touch sensing | Select when CAN FD, floating-point math, or Ethernet are required - not for touch-centric body modules. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz; lower power in HALT mode (0.35 µA); no CAN TTCAN or hardware CSD | Targeted at cost-sensitive, low-compute applications like simple lighting control; limited analog capability | Choose for non-touch, low-pin-count designs where AEC-Q100 Grade-2 suffices and CAN timing determinism is not critical. |
Compared with S32K144 and RL78/F14, CY8C4127LQS-S443 uniquely combines AEC-Q100 Grade-S qualification, hardware-accelerated CAPSENSE™, TTCAN, and 48-MHz Cortex-M0+ in a single die - making it optimal for automotive human-machine interface nodes where touch reliability, timing precision, and integration density are primary constraints.
Availability
CY8C4127LQS-S443 is available at Aetrix Electronics and suitable for automotive body control modules, center console HMIs, engine bay sensor hubs, and seat occupancy systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CY8C4127LQS-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.
CY8C4127LQS-S443 belongs to the PSoC™ 4100S Plus product line - designed specifically for automotive body electronics requiring integrated capacitive sensing, deterministic CAN communication, and AEC-Q100-compliant low-power operation.
FAQ
Does CY8C4127LQS-S443 support CAN FD?
No. CY8C4127LQS-S443 implements CAN 2.0B with optional time-triggered CAN (TTCAN) per ISO 11898-1, but does not support CAN FD data rates or extended frame formats. For CAN FD, consider Infineon's AURIX™ TC3xx family or NXP S32K3xx devices.
What development tools are officially supported?
Infineon officially supports ModusToolbox™ (Eclipse-based, cross-platform) and legacy PSoC™ Creator (Windows-only). Both provide full access to CAPSENSE™ Tuner, TCPWM configurator, CAN message object setup, and debug via KitProg3 or MiniProg3 programmers.
Is external flash required for firmware storage?
No. CY8C4127LQS-S443 integrates 128 KB of on-chip flash memory with Read Accelerator, sufficient for typical automotive body control firmware including bootloader, application, and CAPSENSE™ configuration data - eliminating need for external storage.
How is CAPSENSE™ calibrated in production?
CAPSENSE™ calibration is performed automatically using SmartSense hardware - no factory programming or manual tuning required. During first power-up, the device measures baseline capacitance and adapts IDAC current, scan speed, and filtering parameters to achieve optimal SNR for that specific PCB layout and environment.
CY8C4127LQS-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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4127LQS-S443 FAQ
1.How can I place an order for CY8C4127LQS-S443 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127LQS-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 CY8C4127LQS-S443 reliable?
The price and inventory of CY8C4127LQS-S443 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127LQS-S443 is usually 5 days.
3.What payment methods are accepted for CY8C4127LQS-S443?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4127LQS-S443 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4127LQS-S443?
CY8C4127LQS-S443 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127LQS-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 CY8C4127LQS-S443?
For technical support, including CY8C4127LQS-S443 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127LQS-S443 requirements.
6.How does Aetrix verify that CY8C4127LQS-S443 is sourced from the original manufacturer or authorized distributors?
All CY8C4127LQS-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 CY8C4127LQS-S443 meets industry standards.
7.What is the process for return or replacement of CY8C4127LQS-S443?
All CY8C4127LQS-S443 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127LQS-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 CY8C4127LQS-S443 part is unused and in its original packaging.
Return procedure for CY8C4127LQS-S443:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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