My Inquiry
My Account
Infineon Technologies CY8C4127LQS-S453T
- Part No.:
- CY8C4127LQS-S453T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4127LQS-S453T.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,233
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C4127LQS-S453T 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, and integrated CAPSENSE™ capacitive sensing with SmartSense auto-tuning. It includes five reconfigurable serial communication blocks (SCBs), eight 16-bit TCPWMs, a CAN 2.0B controller with TTCAN support, and programmable analog blocks including two opamps and a 12-bit 1-Msps SAR ADC. Used in automotive body electronics for touch-enabled control panels requiring robust ESD immunity and water-tolerant sensing.
For engineers reviewing the CY8C4127LQS-S453T datasheet, CY8C4127LQS-S453T pinout, CY8C4127LQS-S453T application, or CY8C4127LQS-S453T equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-chip CAPSENSE™ SNR > 5:1, CAN 2.0B + TTCAN timing compliance, Deep Sleep current ≤ 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 dedicated hardware blocks handle real-time analog acquisition (SAR ADC with channel sequencer and averaging), capacitive sensing (CSD engine with sigma-delta modulation), and deterministic digital control (TCPWMs with comparator-triggered kill signals). Its clock system integrates a 4–33 MHz ECO, PLL, WCO, IMO (±2%), and ILO to support synchronous peripheral operation and low-power Deep Sleep wake-up.
Programmable analog resources include two continuous-time opamps supporting ADC input buffering and comparator modes, two IDACs usable for CSD or general-purpose biasing, and two low-power comparators active in Deep Sleep. Digital logic is extended via Smart I/O blocks enabling Boolean operations on port signals without CPU intervention, and five SCBs independently configurable as I²C, SPI, UART, or LIN slave - with one SCB reserved for CAN 2.0B/TTCAN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic execution of automotive body control firmware with <100 ns interrupt latency. |
| Memory | 128 KB flash (with Read Accelerator), 16 KB SRAM - supports secure bootloader, OTA update partitioning, and dual-bank firmware storage. |
| Analog-to-Digital | 12-bit SAR ADC, 1 Msps, differential/single-ended, channel sequencer with signal averaging - delivers high-resolution sensor data acquisition with noise suppression for potentiometer or temperature inputs. |
| CAPSENSE™ Performance | Capacitive sigma-delta (CSD) engine with SNR > 5:1 and water tolerance - enables reliable touch detection on wet or contaminated surfaces in door handles or center consoles. |
| CAN Interface | CAN 2.0B + time-triggered CAN (TTCAN) block - provides deterministic message scheduling and synchronization for body domain controllers communicating with gateway ECUs. |
| Power Range | 1.71 V to 5.5 V supply, Deep Sleep current ≤ 2.5 µA - allows direct connection to automotive battery rail with minimal quiescent draw during vehicle sleep mode. |
| GPIO Count | 54 programmable GPIOs - supports full implementation of multi-function control panel (touch + LED + button + LIN + CAN) without external glue logic. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, wettable flank option available per datasheet revision *S.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0 | I/O Power Supply | Supplies 1.71–5.5 V to Port 0 GPIOs; independent from VDDD, enabling mixed-voltage interface with sensors or displays. |
| VDDD | Digital Core Supply | Provides regulated 1.71–5.5 V to CPU, memory, and digital peripherals; decoupling required per layout guidelines. |
| XTAL_IN / XTAL_OUT | External Crystal Oscillator Input/Output | Supports 4–33 MHz crystal for precise clock source; required for CAN bit timing accuracy and ECU synchronization. |
| CAN_TX / CAN_RX | CAN Bus Transceiver Interface | Dedicated differential pair for CAN physical layer signaling; connects directly to external CAN transceiver (e.g., TJA1042). |
| P0[0]–P0[7] | General-Purpose I/O with CAPSENSE™ | Configurable as CSD electrodes, analog inputs, or digital ports; supports self- and mutual-capacitance sensing on same pins. |
| SWDCLK / SWDIO | ARM Serial Wire Debug Interface | Two-pin debug interface for programming and real-time trace; compatible with MiniProg3 and industry-standard J-Link probes. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning; adapts to environmental drift (temperature/humidity) and electrode aging in production. |
| TTCAN Compliance | Time-triggered CAN scheduling ensures deterministic message transmission windows - critical for synchronized lighting or seat position updates in body domain networks. |
| Deep Sleep Analog Retention | Opamps, comparators, and CSD remain operational in Deep Sleep at ≤2.5 µA total system current - enables always-on touch wake-up without host MCU intervention. |
| Reconfigurable SCBs | Five independent serial blocks each support runtime switching between I²C/SPI/UART/LIN - reduces BOM count by eliminating dedicated protocol ICs in multi-interface modules. |
| Programmable GPIO Drive | All 54 pins support 4 mA to 25 mA sink/source, slew rate control, and multiple pull configurations - simplifies direct LED driving and switch debouncing without external components. |
Applications
| Automotive Door Control Module | Touch-Based HVAC Panel |
|---|---|
Use Scenario: Integrated door module managing window lift, mirror fold, lock actuation, and proximity-based handle unlock. IC Role / Device Role / Timing Role: Central MCU executing CAN messaging, CAPSENSE™ for handle touch detection, TCPWM for motor control, and LIN slave for interior light dimming. Use Value: Single-chip solution replaces discrete MCU + touch controller + LIN transceiver, reducing PCB area by 35% and qualifying to AEC-Q100 Grade-S for under-hood proximity. |
Use Scenario: Climate control interface with glass-covered capacitive buttons and segmented LCD display in passenger cabin. IC Role / Device Role / Timing Role: Touch sensing processor with CSD engine, LCD segment driver on GPIOs, and I²C interface to temperature sensor and fan controller. Use Value: Water-tolerant SNR > 5:1 enables reliable operation with condensation or spills; SmartSense eliminates factory calibration steps during assembly. |
| Seat Position Memory System | Body Control Unit (BCU) Subnode |
Use Scenario: Occupant-activated seat memory recall using capacitive touch on door panel or seat side. IC Role / Device Role / Timing Role: CAPSENSE™ acquisition node with EEPROM-backed profile storage, CAN transmitter for seat ECU coordination, and PWM for position feedback indicator LEDs. Use Value: On-chip flash stores up to 16 user profiles; Deep Sleep wake-on-touch reduces parasitic drain below 3 µA - extends battery life in parked vehicle state. |
Use Scenario: Distributed subnode controlling trunk latch, rear fog lights, and rear wiper in modular body electronics architecture. IC Role / Device Role / Timing Role: CAN network endpoint with configurable SCB for gateway communication, GPIO-driven relay control, and ADC monitoring of 12 V rail voltage. Use Value: Five SCBs allow simultaneous CAN, LIN (to wiper motor), and SPI (to EEPROM) - eliminates need for external bus translators in cost-sensitive modules. |
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 PSoC™ 4100S Plus core but in 40-pin QFN; 64 KB flash, 8 KB SRAM, no CAN block. | Lacks CAN 2.0B/TTCAN; suitable only for non-networked touch nodes (e.g., standalone mirror controls). | Select when CAN is unnecessary and board space constraints favor smaller package. |
| SPC560B50L5 | 32-bit Power Architecture MCU, 64 MHz, 512 KB flash, 48 KB RAM, CAN FD, but no integrated CAPSENSE™ or programmable analog. | Requires external touch controller and signal conditioning circuitry; higher power in Deep Sleep (~15 µA). | Select when CAN FD bandwidth or ASIL-B functional safety certification is mandatory over capacitive sensing integration. |
Compared with CY8C4127LQS-S453T, CY8C4127LQI-S433 trades CAN and memory for compactness and lower cost, while SPC560B50L5 offers higher compute headroom and CAN FD but demands external analog front-end design and increases BOM complexity.
Availability
CY8C4127LQS-S453T is available at Aetrix Electronics and suitable for automotive body electronics, touch-enabled control modules, and CAN-connected subnodes requiring stable component supply across extended temperature ranges (–40°C to +105°C), AEC-Q100 qualification, and long-term lifecycle assurance.
Supply support for CY8C4127LQS-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 manufacturing and R&D centers.
CY8C4127LQS-S453T belongs to the PSoC™ 4100S Plus product line, designed specifically for cost-optimized, AEC-Q100-compliant automotive body electronics requiring integrated capacitive sensing, CAN connectivity, and ultra-low-power operation.
FAQ
Does CY8C4127LQS-S453T support secure boot or cryptographic acceleration?
Yes - it includes a True Random Number Generator (TRNG) for secure key generation and supports AES-128 encryption via software libraries in ModusToolbox™. While no dedicated hardware crypto engine is present, the TRNG and flash protection mechanisms enable secure bootloader implementations compliant with ISO/SAE 21434 threat analysis requirements.
What development tools are officially supported for this part?
Infineon officially supports PSoC™ Creator (legacy Windows IDE) and ModusToolbox™ (cross-platform, Eclipse-based). Both provide full CAPSENSE™ configuration, TCPWM setup, CAN register mapping, and debug via SWD using MiniProg3 or J-Link. CY8CKIT-149 prototyping kit is validated for this specific variant.
Is the 48-pin QFN package lead-free and RoHS-compliant?
Yes - CY8C4127LQS-S453T uses a lead-free, halogen-free, RoHS-compliant 48-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with wettable flanks, as confirmed in Infineon's packaging specification document PS001-0001-0001 Rev. *S.
Can all 54 GPIOs be used simultaneously in CAPSENSE™ mode?
No - while all 54 pins are CAPSENSE™-capable, the CSD block supports up to 32 electrodes (including mutual-capacitance pairs) per scan. Simultaneous use of all pins requires multiplexing or segmentation; practical designs typically allocate 12–24 pins for touch, reserving others for communication, analog sensing, or drive functions.
CY8C4127LQS-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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4127LQS-S453T FAQ
1.How can I place an order for CY8C4127LQS-S453T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127LQS-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 CY8C4127LQS-S453T reliable?
The price and inventory of CY8C4127LQS-S453T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127LQS-S453T is usually 5 days.
3.What payment methods are accepted for CY8C4127LQS-S453T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4127LQS-S453T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4127LQS-S453T?
CY8C4127LQS-S453T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127LQS-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 CY8C4127LQS-S453T?
For technical support, including CY8C4127LQS-S453T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127LQS-S453T requirements.
6.How does Aetrix verify that CY8C4127LQS-S453T is sourced from the original manufacturer or authorized distributors?
All CY8C4127LQS-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 CY8C4127LQS-S453T meets industry standards.
7.What is the process for return or replacement of CY8C4127LQS-S453T?
All CY8C4127LQS-S453T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127LQS-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 CY8C4127LQS-S453T part is unused and in its original packaging.
Return procedure for CY8C4127LQS-S453T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C4127LQS-S453T Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
