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Infineon Technologies CY8C4127LQSS455XQSA1
- Part No.:
- CY8C4127LQSS455XQSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 56-UFQFN Exposed Pad
- Datasheet:
-
CY8C4127LQSS455XQSA1.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 56UFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,622
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Product details
Overview
CY8C4127LQSS455XQSA1 from Infineon is an AEC-Q100 Grade-S (–40°C to +105°C) automotive-grade PSoC™ 4100S Plus programmable system-on-chip 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 16-bit TCPWM units, and a CAN 2.0B controller with time-triggered support - deployed in automotive body control modules requiring robust touch interface and real-time bus communication.
For engineers reviewing the CY8C4127LQSS455XQSA1 datasheet, CY8C4127LQSS455XQSA1 pinout, CY8C4127LQSS455XQSA1 application, or CY8C4127LQSS455XQSA1 equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-die CAPSENSE™ with SmartSense auto-tuning, CAN 2.0B + TTCAN compliance, Deep Sleep current of 2.5 µA, and GPIO flexibility across 54 pins with programmable drive strength and slew rate.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ core executes firmware while programmable analog blocks (two opamps, 12-bit SAR ADC, two IDACs, two low-power comparators) and digital resources (TCPWM, SCB, Smart I/O) operate concurrently under hardware routing control. All analog peripherals remain functional in Deep Sleep mode at 2.5 µA system current.
Its clock system integrates four independent sources - 4–33 MHz ECO, 32-kHz WCO, ±2% IMO, and 32-kHz ILO - with a PLL for precise 48-MHz CPU clock generation. The CAN block supports both standard and time-triggered operation, enabling deterministic message scheduling required for ASIL-B–capable vehicle subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - delivers deterministic real-time execution for safety-critical automotive firmware. |
| Flash / SRAM | 128 KB flash with Read Accelerator / 16 KB SRAM - enables complex CAPSENSE™ + CAN + TCPWM firmware without external memory. |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended, channel sequencer with signal averaging - supports high-accuracy sensor acquisition in noisy automotive environments. |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with >5:1 SNR and water tolerance - enables reliable touch buttons/knobs in wet or condensing cabin conditions. |
| CAN Interface | CAN 2.0B with TTCAN support - provides time-triggered message scheduling for synchronized actuator control in body electronics. |
| Operating Temp | Grade-S: –40°C to +105°C - qualified for under-hood and dashboard-mounted automotive ECUs per AEC-Q100 Rev G. |
| Low-Power Mode | Deep Sleep at 2.5 µA with active analog - sustains capacitive wake-up detection and CAN bus monitoring without MCU wake-up. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | GPIO / CAPSENSE™ CSD / Analog Input / SCB0 SDA/SCL | Multi-function port bank supporting simultaneous touch sensing, I²C slave, and analog voltage measurement. |
| P1[0]–P1[7] | GPIO / CAPSENSE™ CSD / TCPWM0 / SCB1 RX/TX | Configurable for motor control PWM output or UART-based diagnostics while retaining capacitive wake capability. |
| P2[0]–P2[7] | GPIO / CAPSENSE™ CSD / CAN TX/RX / SCB2 | Dedicated CAN physical layer interface with internal termination; also serves as secondary touch channel bank. |
| VDD / VSS | Power Supply / Ground | Single 1.71–5.5 V supply rail; supports direct connection to automotive 3.3 V or 5 V domains without LDO. |
| XRES | Active-Low Reset Input | Asynchronous reset pin compatible with automotive watchdog ICs; debounced internally for noise immunity. |
| SWDCK / SWDIO | ARM Serial Wire Debug | Two-pin debug interface enabling in-system programming and real-time trace without dedicated JTAG header. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning across temperature/humidity variations. |
| Programmable Analog Blocks | Two opamps usable as ADC input buffers, comparators, or transimpedance amplifiers - configurable per application without layout change. |
| Reconfigurable SCBs | Five serial blocks independently assignable as I²C, SPI, UART, or LIN slave - reduces BOM count vs. discrete protocol ICs. |
| TTCAN Support | Time-triggered CAN scheduling ensures deterministic latency for synchronized lighting or window lift control loops. |
| True Random Number Generator | TRNG compliant with NIST SP 800-90A - enables secure key derivation for bootloader authentication in OTA update systems. |
Applications
| Automotive Door Module | Dashboard Touch Controller |
|---|---|
|
Use Scenario: Centralized control of power windows, locks, mirrors, and interior lighting via CAN bus. IC Role / Device Role / Timing Role: Main MCU executing CAN application layer, driving TCPWM for motor control, and managing CAPSENSE™ for capacitive switch inputs. Use Value: Single-chip integration replaces discrete MCU + CAN transceiver + touch controller, reducing PCB area by 35% and qualifying to AEC-Q100 Grade-S. |
Use Scenario: Multi-button touch interface for HVAC, infotainment, and driver assistance controls in instrument clusters. IC Role / Device Role / Timing Role: CAPSENSE™ master with SmartSense auto-calibration, running real-time touch firmware while maintaining CAN bus presence. Use Value: >5:1 SNR and water tolerance enable reliable operation during rain or condensation, eliminating mechanical switches and associated wear-out failure modes. |
| Body Control Unit (BCU) | Seat Position Memory System |
|
Use Scenario: Aggregating signals from door sensors, ambient light, and rain detectors to manage automatic wipers, lights, and climate. IC Role / Device Role / Timing Role: System controller interfacing with LIN slaves (e.g., mirror actuators) and CAN backbone, using SCBs in mixed-mode configuration. Use Value: Five reconfigurable SCBs allow dynamic protocol assignment - e.g., SCB0 as I²C for ambient sensor, SCB1 as LIN for mirror control - without hardware revision. |
Use Scenario: Storing and recalling seat position profiles using non-volatile flash and controlling multi-axis seat motors. IC Role / Device Role / Timing Role: Motor control MCU with eight TCPWM blocks generating synchronized PWM for up to four DC motors and quadrature decoding for position feedback. Use Value: Hardware quadrature decoder offloads CPU during seat movement, enabling sub-millisecond position updates and smooth motion profiling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable automotive MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144HAT0MLHT | ARM Cortex-M4F @ 112 MHz, 512 KB flash, no integrated CAPSENSE™, requires external touch controller. | Higher compute throughput for motor control algorithms but adds BOM cost and layout complexity for touch interface. | Select when floating-point math or Ethernet/USB connectivity is required; not optimal for touch-centric designs. |
| Renesas RL78/F14 | 16-bit RL78 core @ 32 MHz, 256 KB flash, built-in touch I/O but no CAN FD or TTCAN support. | Limited to basic CAN 2.0A; lacks time-triggered scheduling needed for synchronized actuator coordination. | Choose for cost-sensitive entry-level body modules where TTCAN and >5:1 SNR touch are not required. |
Compared with S32K144HAT0MLHT and RL78/F14, CY8C4127LQSS455XQSA1 uniquely combines AEC-Q100 Grade-S qualification, on-die CAPSENSE™ with SmartSense, TTCAN, and Deep Sleep at 2.5 µA - making it optimal for space-constrained, touch-integrated automotive ECUs where mixed-signal integration reduces system-level validation effort.
Availability
CY8C4127LQSS455XQSA1 is available at Aetrix Electronics and suitable for automotive door modules, dashboard touch controllers, body control units, and seat position memory systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY8C4127LQSS455XQSA1 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 is a German semiconductor manufacturer specializing in power management, automotive MCUs, and security solutions, with global manufacturing and R&D centers.
This part belongs to the PSoC™ 4100S Plus product line - designed specifically for automotive body electronics requiring integrated capacitive sensing, CAN communication, and low-power operation across –40°C to +105°C.
FAQ
Does CY8C4127LQSS455XQSA1 support CAN FD?
No. This device implements a CAN 2.0B controller with time-triggered CAN (TTCAN) capability only. It does not support CAN FD data rates or extended frame formats. For CAN FD requirements, consider Infineon's AURIX™ TC3xx family or evaluate external CAN FD transceivers paired with this device's standard CAN peripheral.
What development tools are officially supported?
Infineon officially supports ModusToolbox™ (v3.1+) and legacy PSoC™ Creator (v4.4) IDEs. Both provide full CAPSENSE™ configuration, TCPWM setup, CAN register mapping, and SmartSense tuning workflows. Debugging uses standard ARM Serial Wire Debug via MiniProg4 or KitProg3 programmers.
Is the 128 KB flash field-programmable after soldering?
Yes. The flash is electrically erasable and reprogrammable in-system via SWD interface using standard ARM CMSIS-DAP protocols. Field firmware updates are supported through custom bootloader implementations using the on-chip ROM-based bootloadable component and protected flash sectors.
How many CAPSENSE™ buttons can be implemented simultaneously?
Up to 64 capacitive sensing channels are supported using the CSD method, constrained only by available GPIO pins and scan time budget. With SmartSense auto-tuning enabled, all channels maintain >5:1 SNR across temperature and humidity variations without manual recalibration.
CY8C4127LQSS455XQSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 56-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4000S
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- 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, CapSense, DMA, LCD, POR, PWM, TRNG, WDT
- Number of I/O:
- 54
- 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, 20x12b SAR; D/A 2x7/8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4127LQSS455XQSA1 FAQ
1.How can I place an order for CY8C4127LQSS455XQSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127LQSS455XQSA1 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 CY8C4127LQSS455XQSA1 reliable?
The price and inventory of CY8C4127LQSS455XQSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127LQSS455XQSA1 is usually 5 days.
3.What payment methods are accepted for CY8C4127LQSS455XQSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4127LQSS455XQSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4127LQSS455XQSA1?
CY8C4127LQSS455XQSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127LQSS455XQSA1 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 CY8C4127LQSS455XQSA1?
For technical support, including CY8C4127LQSS455XQSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127LQSS455XQSA1 requirements.
6.How does Aetrix verify that CY8C4127LQSS455XQSA1 is sourced from the original manufacturer or authorized distributors?
All CY8C4127LQSS455XQSA1 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 CY8C4127LQSS455XQSA1 meets industry standards.
7.What is the process for return or replacement of CY8C4127LQSS455XQSA1?
All CY8C4127LQSS455XQSA1 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127LQSS455XQSA1, 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 CY8C4127LQSS455XQSA1 part is unused and in its original packaging.
Return procedure for CY8C4127LQSS455XQSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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