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Infineon Technologies CY8C4127AXI-S455
- Part No.:
- CY8C4127AXI-S455
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY8C4127AXI-S455.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:900
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Product details
Overview
CY8C4127AXI-S455 from Infineon Technologies (acquired Cypress Semiconductor) is a 32-bit programmable system-on-chip (PSoC 4100S Plus) featuring an Arm® Cortex-M0+ CPU running at 48 MHz, 128 KB flash, 16 KB SRAM, integrated CapSense® capacitive sensing, CAN 2.0B interface, and programmable analog/digital blocks. It targets embedded human-interface and industrial control applications requiring mixed-signal integration, low-power operation (2.5 µA in Deep Sleep), and hardware-accelerated touch sensing.
For engineers reviewing the CY8C4127AXI-S455 datasheet, CY8C4127AXI-S455 pinout, CY8C4127AXI-S455 application, or CY8C4127AXI-S455 equivalent, key selection criteria include its 48-MHz Cortex-M0+ core, 12-bit 1-Msps SAR ADC, dual opamps with Deep Sleep support, CAN 2.0B block with TTCAN, and 54 GPIOs with configurable drive modes and CapSense capability on any pin.
Technical Context
The device integrates a tightly coupled MCU subsystem with flash read accelerator and 8-channel DMA, enabling deterministic real-time execution. Its analog subsystem includes two reconfigurable opamps (supporting comparator, buffer, and high-drive modes), a 12-bit SAR ADC with channel sequencer and averaging, and two IDACs for capacitive sensing or general-purpose use.
Digital resources comprise five reconfigurable Serial Communication Blocks (SCBs) supporting I²C/SPI/UART, eight 16-bit TCPWM blocks with center-aligned/PWM/quad-decoder modes, and a dedicated CAN 2.0B controller with Time-Triggered CAN (TTCAN) support - all accessible via programmable interconnect routed through Smart I/O and High-Speed I/O Matrix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz, single-cycle multiply - enables real-time firmware execution with minimal latency for sensor fusion and motor control loops. |
| Flash / SRAM | 128 KB flash with Read Accelerator; 16 KB zero-wait-state SRAM - supports complex firmware with bootloader, secure updates, and data buffering without performance penalty. |
| Analog Peripherals | 2× opamps (Deep Sleep capable), 12-bit 1-Msps SAR ADC, 2× IDACs, 2× LP comparators - enables simultaneous analog signal conditioning, precision measurement, and capacitive touch sensing. |
| Digital Peripherals | 5× SCBs (I²C/SPI/UART), 8× TCPWM, CAN 2.0B with TTCAN - provides flexible communication, timing-critical PWM generation, and deterministic automotive-grade bus interfacing. |
| Power Modes | Deep Sleep: 2.5 µA digital + operational analog; Active: up to 48 MHz - allows battery-powered devices to sustain multi-year operation with periodic wake-up and sensing. |
| GPIO & CapSense | Up to 54 programmable GPIOs; CapSense Sigma-Delta (CSD) with >5:1 SNR and SmartSense™ auto-tuning - delivers robust, water-tolerant touch interfaces without external components or calibration effort. |
| Clock Sources | 4–33 MHz ECO + PLL, 32-kHz WCO, ±2% IMO, 32-kHz ILO - supports precise timing for RTC, CAN bit timing, and low-power wake-up while minimizing external crystal count. |
Pinout & Package
Package: 44-pin TQFP (0.8 mm pitch), RoHS-compliant, surface-mount. Pin mapping validated per Cypress/Infineon datasheet 002-19966 Rev. *H, Page 10–12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | Port 0 GPIO / CapSense / Analog Input | Configurable as digital I/O, CapSense electrode, or ADC input; supports high-drive and slew-rate control. |
| P1[0]–P1[7] | Port 1 GPIO / SCB0 / TCPWM0 | Shared with SCB0 (I²C/SPI/UART) and TCPWM0 outputs; enables peripheral co-location with minimal routing. |
| P2[0]–P2[7] | Port 2 GPIO / CAN_TX / CAN_RX | Dedicated CAN transceiver pins with internal termination and filtering - eliminates need for external CAN bus drivers in basic implementations. |
| P3[0]–P3[7] | Port 3 GPIO / ECO / WCO / VREF | Supports external crystal connections (ECO/WCO) and precision reference voltage output for ADC/CapSense calibration. |
| VDD / VSS | Power Supply / Ground | Single 1.71–5.5 V supply; separate analog/digital ground pins ensure noise isolation for sensitive analog measurements. |
| SWDCK / SWDIO | Debug Interface | Two-pin Serial Wire Debug (SWD) - enables full programming, breakpoint, and trace debugging using standard Arm tools without JTAG header. |
Key Features
| Feature | Design Value |
|---|---|
| CapSense® CSD Engine | Hardware-accelerated sigma-delta capacitive sensing with >5:1 SNR and automatic SmartSense™ tuning - reduces firmware overhead and eliminates manual calibration across temperature/humidity. |
| Programmable Analog Blocks | Two opamps configurable as buffers, comparators, or high-drive outputs - enables analog front-end customization (e.g., sensor signal conditioning) without external components. |
| Time-Triggered CAN (TTCAN) | Hardware-supported deterministic CAN scheduling with time-triggered message transmission - meets functional safety requirements for industrial motion control and automotive body electronics. |
| Deep Sleep with Analog Active | 2.5 µA system current while maintaining opamp, comparator, and CapSense functionality - enables always-on touch wake-up and ultra-low-power sensor monitoring. |
| Smart I/O Routing | Automatic interconnect between peripherals and GPIOs via configurable routing matrix - eliminates fixed-function pin constraints and simplifies PCB layout for multi-peripheral designs. |
Applications
| Industrial HMI Panel | Automotive Body Controller |
|---|---|
Use Scenario: Touch-enabled control panel for HVAC, lighting, and window controls in factory automation or commercial buildings. IC Role / Device Role / Timing Role: Primary MCU handling CapSense button/slider inputs, CAN bus communication with PLCs, and real-time PWM dimming of LED indicators. Use Value: Single-chip integration eliminates discrete touch controller and CAN transceiver, reducing BOM cost and board area while ensuring synchronized touch response and bus timing. | Use Scenario: Centralized door module managing power windows, mirrors, locks, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: CAN node controller executing TTCAN-scheduled diagnostics, actuator control, and fault reporting with sub-millisecond jitter tolerance. Use Value: Hardware TTCAN engine ensures deterministic message timing without CPU intervention, meeting ISO 11898-1 timing compliance for automotive Class B networks. |
| Smart Home Sensor Hub | Medical Patient Monitor Front-End |
Use Scenario: Battery-powered hub aggregating temperature, humidity, and occupancy data from multiple sensors and transmitting via BLE (via external companion IC). IC Role / Device Role / Timing Role: Low-power host MCU performing sensor ADC sampling, CapSense wake-up, and SPI/I²C sensor interface management. Use Value: Deep Sleep current of 2.5 µA extends coin-cell life beyond 3 years; programmable opamps condition thermistor and photodiode signals directly on-chip. | Use Scenario: Portable patient monitor measuring pulse oximetry (SpO₂), skin temperature, and respiration rate with clinical-grade accuracy. IC Role / Device Role / Timing Role: Analog-intensive subsystem controller acquiring synchronized analog waveforms via SAR ADC, driving LED current sources via IDACs, and processing raw data before transmission. Use Value: Integrated 12-bit SAR ADC with differential mode and channel sequencer captures multi-channel physiological waveforms with <1 LSB INL, eliminating external ADC and multiplexer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4127LQI-S433 | Same PSoC 4100S Plus family; 48-pin QFN package, no CAN block, lower GPIO count (34), identical CPU/analog/peripherals otherwise. | Lacks CAN interface; suitable for non-automotive touch+sensor applications where space-constrained QFN is preferred over TQFP. | Select when CAN is unnecessary and board space or thermal profile favors QFN over TQFP. |
| STM32G431KB | Arm Cortex-M4F @ 170 MHz, 128 KB flash, 32 KB SRAM, no integrated CapSense, requires external touch controller; includes FPU and advanced timers. | Higher compute throughput but adds BOM complexity for touch; better suited for math-intensive control algorithms than capacitive UI. | Select when floating-point computation or advanced motor control (e.g., field-oriented control) dominates over integrated touch sensing. |
Compared with CY8C4127LQI-S433, CY8C4127AXI-S455 adds CAN 2.0B and 20 extra GPIOs in TQFP packaging - critical for automotive body nodes. Versus STM32G431KB, it trades raw M4F performance for on-die CapSense, analog flexibility, and deterministic low-power sleep - favoring UI-centric embedded systems over compute-heavy control.
Availability
CY8C4127AXI-S455 is available at Aetrix Electronics and suitable for industrial HMI panels, automotive body controllers, smart home sensor hubs, and medical patient monitor front-ends requiring stable component supply, long-term lifecycle assurance, and qualified production lots.
Supply support for CY8C4127AXI-S455 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, headquartered in Munich, Germany, is a global semiconductor leader delivering power systems, microcontrollers, sensors, and security solutions for automotive, industrial, and IoT markets.
This device belongs to the PSoC® 4100S Plus product line - engineered specifically for cost-sensitive, low-power embedded applications demanding integrated capacitive touch, analog signal conditioning, and deterministic communication (CAN/I²C/SPI) without external components.
FAQ
What debug interface does CY8C4127AXI-S455 support?
CY8C4127AXI-S455 uses the two-wire Serial Wire Debug (SWD) interface compliant with Arm CoreSight standards. It supports full programming, breakpoint, watchpoint, and trace capabilities via standard tools like Keil MDK, IAR Embedded Workbench, or OpenOCD. No JTAG header is required, and SWD operates at full 48 MHz clock speed during active debugging.
Does CY8C4127AXI-S455 require external crystals for operation?
No - it includes an internal ±2% Main Oscillator (IMO) and 32-kHz Internal Low-power Oscillator (ILO) sufficient for most applications. An external 4–33 MHz crystal (ECO) and/or 32-kHz watch crystal (WCO) are optional: ECO enables precise 48 MHz PLL output for CAN bit timing or USB-like synchronization; WCO improves RTC accuracy and enables IMO locking for enhanced stability.
Can CapSense operate while the CPU is in Deep Sleep mode?
Yes - CapSense Sigma-Delta (CSD) hardware runs autonomously in Deep Sleep mode with only 2.5 µA total system current. The CSD block can detect touch events and generate interrupts to wake the CPU, enabling true "always-on" touch interfaces without compromising battery life in portable devices.
Is the CAN block compatible with ISO 11898-1 physical layer?
No - CY8C4127AXI-S455 contains a CAN protocol controller only (ISO 11898-1 compliant logic), not a physical transceiver. It requires an external CAN transceiver (e.g., Infineon TLE6250 or TI SN65HVD230) connected to P2[0]/P2[1] to achieve full ISO 11898-2 compliance and bus termination.
CY8C4127AXI-S455 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-LQFP
- Series:
- PSOC™ 4 CY8C4100S Plus
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 24MHz
- Connectivity:
- I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, POR, PWM, 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 Slope, 16x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4127AXI-S455 FAQ
1.How can I place an order for CY8C4127AXI-S455 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127AXI-S455 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 CY8C4127AXI-S455 reliable?
The price and inventory of CY8C4127AXI-S455 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127AXI-S455 is usually 5 days.
3.What payment methods are accepted for CY8C4127AXI-S455?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4127AXI-S455 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4127AXI-S455?
CY8C4127AXI-S455 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127AXI-S455 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 CY8C4127AXI-S455?
For technical support, including CY8C4127AXI-S455 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127AXI-S455 requirements.
6.How does Aetrix verify that CY8C4127AXI-S455 is sourced from the original manufacturer or authorized distributors?
All CY8C4127AXI-S455 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 CY8C4127AXI-S455 meets industry standards.
7.What is the process for return or replacement of CY8C4127AXI-S455?
All CY8C4127AXI-S455 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127AXI-S455, 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 CY8C4127AXI-S455 part is unused and in its original packaging.
Return procedure for CY8C4127AXI-S455:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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