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Infineon Technologies CY8C4127LQA-S453T
- Part No.:
- CY8C4127LQA-S453T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4127LQA-S453T.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,779
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Product details
Overview
CY8C4127LQA-S453T 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 >5:1 SNR. It includes five reconfigurable serial communication blocks (SCBs), eight 16-bit TCPWMs, and a CAN 2.0B controller with TTCAN support - deployed in automotive body control modules requiring robust touch interface and real-time bus communication.
For engineers reviewing the CY8C4127LQA-S453T datasheet, CY8C4127LQA-S453T pinout, CY8C4127LQA-S453T application, or CY8C4127LQA-S453T equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-chip CAPSENSE™ with SmartSense auto-tuning, CAN 2.0B + TTCAN capability, Deep Sleep current of 2.5 µA, and full ModusToolbox™/PSoC™ Creator toolchain support.
Technical Context
This device implements a mixed-signal SoC architecture integrating fixed-function and programmable analog/digital resources. Its ARM Cortex-M0+ core executes firmware while dedicated hardware blocks handle CAPSENSE™ sigma-delta conversion, CAN protocol framing, and TCPWM-based motor control timing - all synchronized via a unified clock tree with PLL, WCO, and IMO sources.
The programmable analog subsystem includes two opamps supporting ADC input buffering and comparator modes, plus a 12-bit 1-Msps SAR ADC with channel sequencer and signal averaging. Digital logic is implemented through Smart I/O blocks for Boolean port-level operations and SCBs that dynamically switch between I²C/SPI/UART/LIN functions at runtime.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - 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 secure bootloader storage and multi-tasking firmware with low-latency data access. |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with >5:1 SNR and water tolerance - delivers reliable touch detection in humid automotive cabin environments. |
| CAN Interface | CAN 2.0B with time-triggered CAN (TTCAN) support - ensures deterministic message scheduling for safety-critical body electronics. |
| Power Modes | Deep Sleep mode draws 2.5 µA digital system current while maintaining operational analog - extends battery life in always-on vehicle subsystems. |
| GPIO Count | Up to 54 programmable pins across multiple packages - allows flexible routing of CAPSENSE™, analog inputs, CAN TX/RX, and PWM outputs without external muxing. |
| Temperature Range | AEC-Q100 Grade-S: –40°C to +105°C - qualified for under-hood and interior automotive applications beyond consumer-grade limits. |
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 | I/O power supply | Supplies 1.71–5.5 V to GPIO bank 0; independent regulation enables mixed-voltage interfacing. |
| P0[0]/CAN0_RX | CAN receive input | Dedicated CAN physical layer input with internal pull-up; shares pin with general-purpose GPIO. |
| P0[1]/CAN0_TX | CAN transmit output | Open-drain CAN driver output; configured automatically when CAN block is enabled in firmware. |
| XTAL_IN / ECO_IN | External crystal oscillator input | Accepts 4–33 MHz crystal for high-accuracy system clock; paired with ECO_OUT for stable 48-MHz PLL reference. |
| WCO_IN | Watch crystal oscillator input | Connects to 32.768 kHz tuning-fork crystal for RTC and low-power wake-up timing. |
| SWDCLK / P15[6] | Debug clock | Serial Wire Debug clock input; multiplexed with GPIO; enables non-intrusive firmware debugging and programming. |
| SWDIO / P15[7] | Debug data I/O | Bidirectional SWD data line; shared with GPIO; supports flash programming and real-time variable inspection. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual threshold adjustment and compensates for environmental drift in production. |
| Runtime-reconfigurable SCBs | Five serial blocks can be independently assigned as I²C master/slave, SPI master/slave, UART, or LIN slave - no hardware change required per interface update. |
| TTCAN support | Time-triggered communication scheduling within CAN 2.0B frame structure - meets ISO 11898-1 requirements for deterministic network behavior. |
| Deep Sleep analog retention | Opamps, comparators, and CSD block remain active during 2.5 µA Deep Sleep - enables continuous touch or sensor monitoring without full wake-up. |
| Programmable drive strength | Each GPIO supports configurable slew rate and output drive (up to 25 mA sink/source) - reduces EMI and matches load requirements across diverse peripherals. |
Applications
| Automotive Door Module | Climate Control Panel |
|---|---|
Use Scenario: Touch-sensitive door lock/unlock and window control interface exposed to condensation and temperature cycling. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ firmware, managing LIN communication to body control unit, and driving LED indicators. Use Value: CSD-based touch maintains >5:1 SNR under moisture; Grade-S temperature rating ensures operation at +105°C near door latch actuators. | Use Scenario: HVAC control panel with slider, buttons, and ambient light sensing in dashboard environment. IC Role / Device Role / Timing Role: System-on-chip handling capacitive sliders, analog ambient light ADC input, and CAN bus reporting of temperature setpoints. Use Value: Integrated 12-bit SAR ADC samples photodiode signal directly; CAN 2.0B transmits HVAC status with TTCAN timing for synchronized climate zone updates. |
| Seat Position Memory System | Steering Wheel Controls |
Use Scenario: Non-volatile seat position recall using capacitive touch and motor feedback in constrained space behind seat back. IC Role / Device Role / Timing Role: Embedded controller reading CAPSENSE™ inputs, driving H-bridge motor drivers via PWM, and storing positions in flash. Use Value: Eight TCPWM blocks generate center-aligned motor drive signals; 128 KB flash stores multiple user profiles with wear-leveling firmware. | Use Scenario: Multi-function steering wheel buttons and rotary encoder with haptic feedback in vibration-prone environment. IC Role / Device Role / Timing Role: Real-time touch decoder and CAN message generator, synchronizing button events with vehicle speed and ADAS status. Use Value: Smart I/O blocks debounce inputs in hardware; CAN block transmits event timestamps with <10 µs jitter for ADAS coordination. |
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; lower pin count, no CAN block enabled in silicon. | Lacks CAN 2.0B/TTCAN; limited to LIN/I²C-only body electronics without bus integration. | Select only if CAN is unnecessary and board space requires smaller footprint. |
| SPC560B50L5 | Power Architecture-based, 64-MHz core, 512 KB flash, but no integrated CAPSENSE™ or programmable analog. | Requires external touch controller and signal conditioning ICs for capacitive interfaces. | Choose when legacy PowerPC toolchain compatibility or higher flash density outweighs analog integration benefits. |
Compared with CY8C4127LQI-S433 and SPC560B50L5, CY8C4127LQA-S453T uniquely combines AEC-Q100 Grade-S qualification, on-die CAPSENSE™ with SmartSense, and CAN+TTCAN - reducing BOM count and enabling single-chip touch+bus solutions in space-constrained automotive nodes.
Availability
CY8C4127LQA-S453T is available at Aetrix Electronics and suitable for automotive body control modules, climate control panels, and seat memory systems requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle assurance.
Supply support for CY8C4127LQA-S453T 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, and security solutions, with global R&D and manufacturing infrastructure.
The PSoC™ 4100S Plus product line targets cost-sensitive, high-reliability automotive applications requiring integrated capacitive sensing, real-time communication, and low-power operation - bridging the gap between basic microcontrollers and full-featured automotive SoCs.
FAQ
Does CY8C4127LQA-S453T support CAN FD?
No. This device implements CAN 2.0B with time-triggered extensions (TTCAN), but does not support CAN FD's higher data rates or flexible data-length frames. CAN FD requires separate IP blocks not present in the PSoC™ 4100S Plus architecture.
Is CAPSENSE™ performance affected by PCB stack-up or overlay thickness?
Yes. CSD-based CAPSENSE™ sensitivity scales inversely with overlay thickness and is influenced by dielectric constant and ground plane distance. Recommended overlay thickness is ≤3 mm acrylic; PCB stack-up must maintain controlled impedance on sensor traces and avoid split ground planes beneath sensors.
Can the 12-bit SAR ADC operate during Deep Sleep mode?
No. The SAR ADC requires active CPU and clock domains; however, the capacitance-sensing block (CSD) and low-power comparators remain functional in Deep Sleep, enabling wake-on-touch or analog threshold detection at 2.5 µA system current.
What debug interfaces are supported, and is JTAG available?
CY8C4127LQA-S453T supports Serial Wire Debug (SWD) only - SWDCLK and SWDIO pins are multiplexed with GPIOs P15[6] and P15[7]. JTAG is not implemented; SWD provides full flash programming, breakpoint setting, and register inspection compatible with standard Arm® debug tools.
CY8C4127LQA-S453T 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, CapSense, 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-S453T FAQ
1.How can I place an order for CY8C4127LQA-S453T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127LQA-S453T 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-S453T reliable?
The price and inventory of CY8C4127LQA-S453T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127LQA-S453T is usually 5 days.
3.What payment methods are accepted for CY8C4127LQA-S453T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4127LQA-S453T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4127LQA-S453T?
CY8C4127LQA-S453T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127LQA-S453T 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-S453T?
For technical support, including CY8C4127LQA-S453T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127LQA-S453T requirements.
6.How does Aetrix verify that CY8C4127LQA-S453T is sourced from the original manufacturer or authorized distributors?
All CY8C4127LQA-S453T 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-S453T meets industry standards.
7.What is the process for return or replacement of CY8C4127LQA-S453T?
All CY8C4127LQA-S453T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127LQA-S453T, 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-S453T part is unused and in its original packaging.
Return procedure for CY8C4127LQA-S453T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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