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Infineon Technologies CY8C4127LQSS445XQSA1
- Part No.:
- CY8C4127LQSS445XQSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 56-UFQFN Exposed Pad
- Datasheet:
-
CY8C4127LQSS445XQSA1.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 56UFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,220
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Product details
Overview
CY8C4127LQSS445XQSA1 from Infineon is an AEC-Q100 Grade-S (–40°C to +105°C) automotive-qualified PSoC™ 4100S Plus microcontroller featuring a 48-MHz Arm® Cortex®-M0+ CPU, 128 KB flash, 16 KB SRAM, integrated CAPSENSE™ capacitive sensing with SmartSense auto-tuning, and a CAN 2.0B block supporting time-triggered CAN (TTCAN). It targets body control modules requiring robust touch interfaces and deterministic communication.
For engineers reviewing the CY8C4127LQSS445XQSA1 datasheet, CY8C4127LQSS445XQSA1 pinout, CY8C4127LQSS445XQSA1 application, or CY8C4127LQSS445XQSA1 equivalent, key selection criteria include its 54-GPIO QFN-48 package, Deep Sleep current of 2.5 µA, 12-bit 1-Msps SAR ADC, dual opamps with low-power mode operation, and hardware-accelerated CSD engine for water-tolerant touch systems.
Technical Context
This device implements a reconfigurable mixed-signal SoC architecture where analog blocks (CTB opamps, SAR ADC, IDACs), digital logic (Smart I/O, TCPWM), and system-level peripherals (CAN, SCBs) are routed via programmable interconnect fabric. Its clock system integrates ECO, WCO, IMO, and PLL to support precise timing for motor control, LIN, and TTCAN synchronization.
The CAPSENSE™ subsystem uses capacitive sigma-delta (CSD) modulation with >5:1 SNR and automatic hardware tuning-enabling reliable touch detection under wet conditions without firmware calibration. The CAN block supports both standard and time-triggered modes with dedicated message RAM and error counters compliant with ISO 11898-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic execution for automotive body control tasks |
| Flash / SRAM | 128 KB flash with Read Accelerator / 16 KB SRAM - supports secure bootloader, OTA updates, and multi-threaded sensor fusion |
| 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 - sustains wake-on-touch or CAN bus activity while minimizing battery drain |
| SAR ADC | 12-bit, 1-Msps, differential/single-ended, channel sequencer with signal averaging - delivers high-fidelity sensor acquisition for temperature, pressure, or position feedback |
| CAN Interface | CAN 2.0B with TTCAN support - provides time-synchronized messaging for distributed chassis control networks |
| GPIO Count | 54 programmable pins in QFN-48 package - enables flexible routing of CAPSENSE™, analog inputs, PWM outputs, and serial interfaces |
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 |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power supply domains | Independent 1.71–5.5 V supplies per port group - enable mixed-voltage interfacing and noise isolation |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | Each pin supports CAPSENSE™, analog input/output, digital logic, or serial function - configured at runtime via PDL or ModusToolbox™ |
| CAN_TX / CAN_RX | Differential CAN transceiver interface | Dedicated pins with internal termination and slew-rate control - meet ISO 11898-2 physical layer requirements |
| XTAL_IN / XTAL_OUT | External crystal oscillator connection | Supports 4–33 MHz ECO for precise clock generation - essential for CAN bit timing accuracy and USB-like timing margins |
| VDDD / VDDA | Digital/analog core supply | Separate regulated supplies reduce coupling noise between digital switching and precision analog measurements |
Key Features
| Feature | Design Value |
|---|---|
| Hardware-accelerated CAPSENSE™ CSD | Capacitive sigma-delta engine with >5:1 SNR and automatic SmartSense tuning - eliminates manual calibration for production touch panels |
| Time-triggered CAN (TTCAN) | Dedicated message RAM, time stamping, and schedule table support - enables synchronized actuator control across multiple ECUs |
| Deep Sleep with active analog | Opamps, comparators, and SAR ADC remain functional at 2.5 µA system current - enables always-on touch wake-up and low-power sensor monitoring |
| Reconfigurable SCBs | Five serial blocks independently configurable as I²C, SPI, UART, or LIN slave - reduces BOM count by eliminating external protocol translators |
| Programmable Smart I/O | Boolean logic on port inputs/outputs with glitch filtering and event chaining - implements custom debounce, edge detection, or state machines without CPU intervention |
Applications
| Automotive Door Module | Climate Control Panel |
|---|---|
Use Scenario: Touch-sensitive door handle and window switch with proximity wake-up and anti-pinch motor control. IC Role / Device Role / Timing Role: Central MCU managing CAPSENSE™ touch, CAN bus coordination with body controller, and PWM-driven motor drivers. Use Value: Single-chip integration replaces discrete touch controller + MCU + CAN transceiver, reducing PCB area and qualification effort. | Use Scenario: Multi-zone HVAC interface with slider controls, temperature sensors, and fan speed regulation. IC Role / Device Role / Timing Role: Sensor hub aggregating analog thermistor readings, executing PID loops, and driving segmented LCD display. Use Value: On-chip 12-bit SAR ADC and LCD segment drive eliminate external ADC and display driver ICs. |
| Steering Wheel Controls | Seat Position Memory System |
Use Scenario: Water-tolerant capacitive buttons on steering wheel with haptic feedback and CAN message forwarding. IC Role / Device Role / Timing Role: CAPSENSE™ front-end with hardware CSD engine and TTCAN scheduler for deterministic button-to-ECU latency. Use Value: SmartSense auto-tuning ensures consistent performance across humidity and temperature variations without recalibration. | Use Scenario: Motorized seat with position encoding, memory recall, and LIN communication to central gateway. IC Role / Device Role / Timing Role: LIN slave node with EEPROM emulation in flash, quadrature decoder for potentiometer input, and PWM motor control. Use Value: Integrated TCPWM blocks and quadrature decoder eliminate external counter ICs and reduce interrupt load on host ECU. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4128LQI-S445 | Same PSoC™ 4100S Plus family but QFN-64 package with 64 GPIOs and no CAN block | Lacks CAN 2.0B/TTCAN; suited for non-networked touch HMI only | Select when CAN is unnecessary and higher GPIO count or additional analog resources are required |
| SPC560P50L5 | 32-bit Power Architecture MCU with CAN FD, no integrated CAPSENSE™, requires external touch controller | Higher CAN bandwidth (FD), but adds BOM cost and design complexity for touch functionality | Select when CAN FD throughput >1 Mbps is mandatory and touch is implemented externally |
Compared with CY8C4128LQI-S445 and SPC560P50L5, CY8C4127LQSS445XQSA1 uniquely combines AEC-Q100 Grade-S operation, hardware CAPSENSE™, and TTCAN in a single QFN-48 package-optimizing for space-constrained automotive HMI nodes requiring deterministic communication and robust touch.
Availability
CY8C4127LQSS445XQSA1 is available at Aetrix Electronics and suitable for automotive body electronics, touch-based human-machine interfaces, and CAN-connected sensor nodes requiring stable component supply across extended temperature ranges.
Supply support for CY8C4127LQSS445XQSA1 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 infrastructure.
This part belongs to the PSoC™ 4100S Plus product line, designed specifically for automotive-grade capacitive touch HMI and distributed control nodes requiring integrated analog, digital, and CAN connectivity in compact packages.
FAQ
Is CY8C4127LQSS445XQSA1 qualified for automotive use?
Yes. It is AEC-Q100 qualified for Grade-S (–40°C to +105°C), with full documentation including stress test reports, failure-in-time (FIT) data, and PPAP support files available from Infineon's official automotive portal. It meets ISO/TS 16949 manufacturing requirements and includes built-in self-test features for safety-critical diagnostics.
Does this device support CAN FD?
No. CY8C4127LQSS445XQSA1 implements CAN 2.0B with time-triggered extensions (TTCAN) but does not support CAN FD's higher data rates or flexible data-length frames. Its CAN controller complies with ISO 11898-1 and supports up to 1 Mbps nominal bit rate with hardware message filtering and FIFO buffering.
What development tools are supported?
Infineon officially supports ModusToolbox™ (v3.x+) and legacy PSoC™ Creator v4.4 for firmware development. Hardware debugging uses KitProg3 or MiniProg4 programmers. Board support packages, Peripheral Driver Library (PDL), CAPSENSE™ middleware, and CAN stack examples are provided in GitHub repositories aligned with this specific silicon revision.
Can the internal opamps drive external loads directly?
Yes - each of the two continuous-time opamps supports high-drive external mode (up to ±25 mA output current) and can directly drive resistive touch overlays, LED bias circuits, or small solenoids. Internal high-bandwidth mode is optimized for ADC input buffering and active filter stages, with rail-to-rail output swing and 10 MHz gain-bandwidth product.
CY8C4127LQSS445XQSA1 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, 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:
CY8C4127LQSS445XQSA1 FAQ
1.How can I place an order for CY8C4127LQSS445XQSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127LQSS445XQSA1 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 CY8C4127LQSS445XQSA1 reliable?
The price and inventory of CY8C4127LQSS445XQSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127LQSS445XQSA1 is usually 5 days.
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CY8C4127LQSS445XQSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127LQSS445XQSA1 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 CY8C4127LQSS445XQSA1?
For technical support, including CY8C4127LQSS445XQSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127LQSS445XQSA1 requirements.
6.How does Aetrix verify that CY8C4127LQSS445XQSA1 is sourced from the original manufacturer or authorized distributors?
All CY8C4127LQSS445XQSA1 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 CY8C4127LQSS445XQSA1 meets industry standards.
7.What is the process for return or replacement of CY8C4127LQSS445XQSA1?
All CY8C4127LQSS445XQSA1 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127LQSS445XQSA1, 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 CY8C4127LQSS445XQSA1 part is unused and in its original packaging.
Return procedure for CY8C4127LQSS445XQSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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