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Infineon Technologies CY8C4127AZE-S455
- Part No.:
- CY8C4127AZE-S455
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY8C4127AZE-S455.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,793
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Product details
Overview
CY8C4127AZE-S455 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 TCPWM units, and a CAN 2.0B interface with TTCAN support - deployed in automotive body control modules, smart sensors, and infotainment HMI subsystems.
For engineers reviewing the CY8C4127AZE-S455 datasheet, CY8C4127AZE-S455 pinout, CY8C4127AZE-S455 application, or CY8C4127AZE-S455 equivalent, key selection criteria include its AEC-Q100 Grade-S qualification, on-die CAPSENSE™ with SmartSense auto-tuning, 54 GPIO with programmable drive modes, CAN 2.0B + TTCAN capability, and Deep Sleep current of 2.5 µA with active analog retention.
Technical Context
This device implements a tightly integrated mixed-signal SoC architecture where the Arm® Cortex®-M0+ core coordinates programmable analog (two opamps, 12-bit 1-Msps SAR ADC, dual IDACs) and digital resources (TCPWM, SCB, CAN, Smart I/O). Its clock system combines a 4–33 MHz ECO, PLL, WCO, IMO, and ILO for precise timing across operating modes.
The CAPSENSE™ subsystem uses capacitive sigma-delta (CSD) modulation with hardware-accelerated SmartSense tuning, enabling robust touch detection under wet conditions. The CAN block supports time-triggered operation with configurable message objects and error counters compliant with ISO 11898-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - enables real-time deterministic control with Thumb-2 instruction set and NVIC-based interrupt handling. |
| Flash / SRAM | 128 KB flash with Read Accelerator / 16 KB SRAM - supports firmware updates and runtime data buffering without external memory. |
| Operating Voltage | 1.71 V to 5.5 V - allows direct interfacing with 3.3 V and 5 V peripherals and battery-backed operation down to 1.71 V. |
| Deep Sleep Current | 2.5 µA with active analog - sustains CAPSENSE™ wake-up detection and comparator monitoring while minimizing quiescent power. |
| CAN Interface | CAN 2.0B with TTCAN support - provides deterministic message scheduling, synchronization to global time base, and fault confinement for safety-critical networks. |
| CAPSENSE™ SNR | >5:1 signal-to-noise ratio - ensures reliable touch detection through glass or plastic overlays with water tolerance. |
| GPIO Count | 54 programmable pins - all support CAPSENSE™, analog input/output, digital logic, and configurable slew rate/drive strength. |
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 | I/O Power Supply | Supplies voltage (1.71–5.5 V) to Port 0 GPIOs; independent from core supply for mixed-voltage interfacing. |
| VDDD | Digital Core Supply | Provides regulated 1.8 V to CPU, flash, SRAM, and digital logic; decoupling required per datasheet layout guidelines. |
| VREFB | ADC Reference Input | Accepts external reference (up to VDDA) or internal 1.2 V bandgap for SAR ADC full-scale calibration. |
| CAN_TX / CAN_RX | CAN Physical Layer Interface | Differential pair routed to external CAN transceiver; supports 1 Mbps operation with slew-rate control via GPIO configuration. |
| XTAL_IN / XTAL_OUT | External Crystal Oscillator | Connects to 4–33 MHz crystal for high-accuracy clock source; enables PLL lock to generate stable 48 MHz system clock. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual parameter adjustment and maintains performance across temperature/humidity drift. |
| Reconfigurable SCBs | Five serial blocks dynamically switch between I²C, SPI, UART, or LIN slave mode at runtime - reduces BOM count and PCB footprint. |
| Deep Sleep Analog Retention | Opamps, comparators, and IDACs remain operational during 2.5 µA Deep Sleep - enables low-power wake-on-touch or threshold-crossing events. |
| TTCAN Support | Time-triggered CAN scheduling with global time base synchronization - meets ASAM MCD-2 MC and AUTOSAR COM stack timing requirements. |
| Programmable GPIO Drive | Each pin supports 4 drive modes (strong, open-drain, resistive pull-up/down) and 3 slew rates - simplifies interface to legacy automotive sensors and actuators. |
Applications
| Automotive Door Module | Smart HVAC Control Panel |
|---|---|
Use Scenario: Multi-button capacitive touch interface with backlight dimming and window lift control logic. IC Role / Device Role / Timing Role: Central MCU executing CAPSENSE™ scan, PWM-driven LED dimming, CAN message routing, and TCPWM-based motor control. Use Value: Single-chip integration replaces discrete touch controller + MCU + CAN transceiver, reducing component count by ≥40% and eliminating inter-IC timing skew. | Use Scenario: Climate control HMI with rotary encoder emulation, temperature sensor fusion, and fan speed regulation. IC Role / Device Role / Timing Role: Real-time sensor acquisition (SAR ADC), quadrature decoding for encoder input, and center-aligned PWM for brushless fan driver. Use Value: On-die opamp buffering and IDAC-based RTD excitation eliminate external signal conditioning, improving thermal measurement accuracy ±0.5°C. |
| Body Control Unit (BCU) | Occupant Detection System |
Use Scenario: Consolidated lighting, mirror, and seat position control with diagnostic reporting over CAN. IC Role / Device Role / Timing Role: CAN 2.0B node managing Class B diagnostics (UDS via ISO 15765-2), GPIO-driven relays, and watchdog supervision. Use Value: TTCAN support enables synchronized actuator commands across multiple BCUs, meeting ISO 26262 ASIL-B timing constraints. | Use Scenario: Seat-mounted capacitive occupancy sensing with pressure distribution mapping and child-seat detection. IC Role / Device Role / Timing Role: High-SNR CSD acquisition across 12 electrodes, hardware-averaged channel sequencing, and wake-on-proximity interrupt generation. Use Value: >5:1 SNR and water tolerance ensure false-trigger rate <0.1% in humid cabin environments per FMVSS 208 compliance testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144W | ARM Cortex-M4F core, 112 MHz; no integrated CAPSENSE™; requires external touch controller. | Targeted at higher-performance motor control; lacks on-die capacitive sensing and SmartSense tuning. | Select when floating-point math or Ethernet/Audio interfaces are required; not suitable for touch-HMI cost-sensitive designs. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz; AEC-Q100 Grade-2 (–40°C to +105°C); no CAN FD or TTCAN. | Lower gate count, simpler toolchain; limited analog integration (no SAR ADC with sequencer or IDACs). | Select for basic relay/LED control where CAN is used only for diagnostics, not time-critical actuation. |
Compared with NXP S32K144W and Renesas RL78/F14, CY8C4127AZE-S455 uniquely integrates CAPSENSE™ with SmartSense, TTCAN, and Deep Sleep analog retention - making it optimal for automotive HMI and distributed sensing nodes where BOM reduction and ultra-low-power wake-up are design priorities.
Availability
CY8C4127AZE-S455 is available at Aetrix Electronics and suitable for automotive body electronics, infotainment HMIs, and occupant sensing systems requiring stable component supply, AEC-Q100 compliance, and long-term industrial lifecycle support.
Supply support for CY8C4127AZE-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 is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.
CY8C4127AZE-S455 belongs to the PSoC™ 4100S Plus product line, engineered specifically for automotive-grade mixed-signal control applications demanding integrated capacitive sensing, functional safety-ready peripherals, and low-power operation across extended temperature ranges.
FAQ
What is the maximum operating frequency of the Arm® Cortex®-M0+ core in CY8C4127AZE-S455?
The Arm® Cortex®-M0+ core operates at a maximum frequency of 48 MHz, achieved via the on-chip PLL locked to an external 4–33 MHz crystal oscillator or the internal main oscillator. This frequency is fully supported across the full Grade-S temperature range (–40°C to +105°C) and voltage range (1.71 V to 5.5 V), with timing closure verified per Infineon's characterization data.
Does CY8C4127AZE-S455 support CAN FD or only classical CAN 2.0B?
CY8C4127AZE-S455 supports only CAN 2.0B (ISO 11898-1) with time-triggered extensions (TTCAN); it does not implement CAN FD physical layer or protocol features such as flexible data-rate or extended data length. TTCAN functionality includes global time base synchronization, schedule tables, and guaranteed message transmission windows for ASIL-B systems.
How many CAPSENSE™ electrodes can be scanned simultaneously using the built-in CSD block?
The integrated CAPSENSE™ CSD block supports up to 32 electrodes in a single design, with hardware-accelerated scanning, automatic baseline tracking, and noise filtering. Electrode count is constrained by GPIO availability (54 total), routing topology, and mutual capacitance coupling - typical production implementations use 8–24 electrodes with >5:1 SNR under wet conditions.
Is ModusToolbox™ software required to develop firmware for CY8C4127AZE-S455?
No - ModusToolbox™ is optional and complementary. Firmware development is fully supported using PSoC™ Creator (legacy Windows IDE) or Arm®-compliant toolchains (Keil MDK, GCC, IAR) with Infineon's Peripheral Driver Library (PDL). ModusToolbox™ adds project configurators and middleware like CAPSENSE™ Tuner but is not mandatory for build or debug operations.
CY8C4127AZE-S455 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-LQFP
- Series:
- PSOC™ 4 CY8C4000S
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- 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, 20x12b SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4127AZE-S455 FAQ
1.How can I place an order for CY8C4127AZE-S455 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127AZE-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 CY8C4127AZE-S455 reliable?
The price and inventory of CY8C4127AZE-S455 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127AZE-S455 is usually 5 days.
3.What payment methods are accepted for CY8C4127AZE-S455?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4127AZE-S455 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4127AZE-S455?
CY8C4127AZE-S455 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127AZE-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 CY8C4127AZE-S455?
For technical support, including CY8C4127AZE-S455 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127AZE-S455 requirements.
6.How does Aetrix verify that CY8C4127AZE-S455 is sourced from the original manufacturer or authorized distributors?
All CY8C4127AZE-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 CY8C4127AZE-S455 meets industry standards.
7.What is the process for return or replacement of CY8C4127AZE-S455?
All CY8C4127AZE-S455 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127AZE-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 CY8C4127AZE-S455 part is unused and in its original packaging.
Return procedure for CY8C4127AZE-S455:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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