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Infineon Technologies CY8C4127AZE-S445
- Part No.:
- CY8C4127AZE-S445
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY8C4127AZE-S445.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
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Product details
Overview
CY8C4127AZE-S445 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 (SCB), eight TCPWM modules, CAN 2.0B with TTCAN support, and operates from 1.71 V to 5.5 V. Used in automotive body control modules requiring robust touch interface and real-time motor timing.
For engineers reviewing the CY8C4127AZE-S445 datasheet, CY8C4127AZE-S445 pinout, CY8C4127AZE-S445 application, or CY8C4127AZE-S445 equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-chip CAPSENSE™ SNR >5:1, CAN 2.0B + TTCAN capability, Deep Sleep current of 2.5 µA, and 54 GPIO with programmable drive strength and slew rate.
Technical Context
The device integrates a fixed-function CAN 2.0B controller with time-triggered operation (TTCAN), supporting deterministic communication in distributed automotive networks. Its clock system combines a 4–33 MHz ECO, PLL for 48-MHz core clock, 32-kHz WCO, and ±2% IMO - enabling precise timing for TCPWM kill-signal triggering and LIN slave operation.
Programmable analog resources include two continuous-time opamps (operable in Deep Sleep), a 12-bit 1-Msps SAR ADC with sequencer and averaging, and dual IDACs usable for CAPSENSE™ or general-purpose current sourcing. Digital logic is implemented via Smart I/O blocks and eight TCPWM units supporting center-aligned PWM, quadrature decoding, and comparator-triggered fault shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic execution of automotive control loops and sensor fusion algorithms. |
| Flash / SRAM | 128 KB flash with Read Accelerator / 16 KB SRAM - supports secure bootloader, OTA update partitioning, and multi-tasking RTOS environments. |
| Operating Voltage | 1.71 V to 5.5 V - allows direct connection to 3.3 V or 5 V automotive subsystems without level-shifting. |
| Deep Sleep Current | 2.5 µA digital system current - sustains CAN wake-up, RTC, and LP comparators while minimizing battery drain in always-on modules. |
| CAPSENSE™ SNR | >5:1 signal-to-noise ratio - delivers reliable touch detection under condensation, glove use, and EMI-rich vehicle cabins. |
| CAN Interface | CAN 2.0B with TTCAN support - provides synchronized message scheduling for safety-critical actuator control and diagnostics. |
| GPIO Count | 54 programmable pins - enables single-chip integration of touch buttons, LED drivers, motor gate signals, and LIN/CAN transceiver interfaces. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad. Pin mapping validated per Infineon datasheet Rev. *S (2024-07-11), Table 2-1 and Figure 2-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0 | I/O power supply | Supplies 1.71–5.5 V to Port 0 GPIOs; independent from core voltage for mixed-voltage interfacing. |
| VDDD | Digital core supply | Provides regulated 1.71–1.89 V to CPU, flash, and digital peripherals; requires external LDO or buck converter. |
| VREFB | ADC reference input | Accepts external 1.024 V or internal VDDA/2 reference; enables ratiometric or absolute voltage measurement. |
| CAN_TX / CAN_RX | CAN physical layer interface | Differential pair routed to external CAN transceiver; supports 1 Mbps operation with TTCAN timestamp alignment. |
| XTAL_IN / XTAL_OUT | External crystal oscillator terminals | Connects to 4–33 MHz crystal for high-accuracy clock source; required for CAN bit timing and ECU synchronization. |
| SWDCK / SWDIO | ARM Serial Wire Debug interface | Enables in-circuit programming and real-time debugging without dedicated JTAG pins; shared with GPIO functionality. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual firmware tuning across temperature, humidity, and PCB stackup variations. |
| TTCAN compliance | Hardware timestamping and schedule enforcement enable time-deterministic message transmission for ASIL-B functional safety paths. |
| Deep Sleep analog retention | Opamps, comparators, and SAR ADC remain operational at 2.5 µA system current - supports wake-on-touch or wake-on-CAN event. |
| Reconfigurable SCBs | Five serial blocks dynamically switch between I²C/SPI/UART/LIN slave modes at runtime - reduces BOM count and PCB footprint. |
| Quadrature decoder | Integrated hardware decoder processes incremental encoder signals with zero CPU overhead - essential for motor position feedback in EPS or HVAC actuators. |
Applications
| Automotive Door Module | Steering Column Control Unit |
|---|---|
Use Scenario: Multi-button capacitive touch panel on door trim controlling windows, mirrors, and locks. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ scan, LIN slave communication to body domain controller, and PWM-driven LED status indicators. Use Value: Single-chip solution eliminates discrete touch controller and LIN transceiver, reducing component count by ≥4 and enabling IP67-sealed bezel design. | Use Scenario: Rotary encoder and push-button interface for cruise control, audio, and phone functions on steering wheel. IC Role / Device Role / Timing Role: Real-time quadrature decoding of encoder, CAN message routing to powertrain and infotainment domains, and low-latency button debouncing. Use Value: Hardware quadrature decoder ensures <10 µs position update latency; TTCAN guarantees <250 µs jitter for safety-critical cruise resume commands. |
| Roof Console Switch Panel | Seat Position Memory Module |
Use Scenario: Capacitive sliders and buttons for sunroof, ambient lighting, and map light control in overhead console. IC Role / Device Role / Timing Role: CAPSENSE™ master with water-tolerant CSD algorithm, I²C interface to RGB LED driver IC, and PWM dimming control. Use Value: >5:1 SNR ensures reliable operation under condensation; programmable slew rate prevents EMI during fast LED transitions. | Use Scenario: Motorized seat position storage and recall using potentiometer feedback and DC motor H-bridge control. IC Role / Device Role / Timing Role: Analog acquisition of seat track potentiometer, TCPWM generation for motor direction/speed, and CAN-based profile sync with central gateway. Use Value: 12-bit SAR ADC with hardware averaging achieves ±0.5% position accuracy; comparator-triggered TCPWM kill signal halts motor on overcurrent within 200 ns. |
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; includes Ethernet MAC and more CAN FD channels; no integrated CAPSENSE™ | Targets higher-compute ADAS domain controllers; lacks on-chip touch sensing, requiring external TSI or dedicated touch ASIC | Select when CAN FD, floating-point math, or Ethernet connectivity outweighs integrated capacitive sensing cost and footprint advantage |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz; AEC-Q100 Grade 2 (–40°C to +105°C); no CAN TTCAN or hardware quadrature decoder | Suitable for cost-sensitive body electronics with basic LIN/CAN; limited analog performance and no SmartSense auto-tuning | Select only for legacy LIN-only designs where 16-bit processing and minimal analog requirements meet functional scope |
Compared with NXP S32K144W and Renesas RL78/F14, CY8C4127AZE-S445 uniquely integrates automotive-grade CAPSENSE™ with TTCAN and hardware quadrature decoding - delivering lowest BOM count and fastest time-to-touch for Class-A interior human-machine interfaces.
Availability
CY8C4127AZE-S445 is available at Aetrix Electronics and suitable for automotive door modules, steering column controls, roof console panels, and seat memory systems requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle assurance.
Supply support for CY8C4127AZE-S445 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, radar sensors, and security ICs, with global R&D and manufacturing infrastructure.
CY8C4127AZE-S445 belongs to the PSoC™ 4100S Plus product line, engineered specifically for automotive interior human-machine interface (HMI) applications demanding integrated capacitive sensing, functional safety timing, and multi-protocol connectivity in a single die.
FAQ
Is CY8C4127AZE-S445 qualified for automotive safety-critical systems?
Yes. It is AEC-Q100 Grade-S qualified (–40°C to +105°C) and includes hardware features supporting ASIL-B decomposition: TTCAN with timestamping, comparator-triggered TCPWM kill signals, ECC-protected flash, and lock-step ready architecture. Functional safety documentation (FMEDA, safety manual) is available from Infineon upon NDA.
Does CY8C4127AZE-S445 support secure boot and firmware updates?
Yes. It supports cryptographic secure boot using SHA-256 and AES-128 via its TRNG and hardware accelerator. Over-the-air (OTA) updates are enabled through dual-bank flash with atomic swap, verified by signature check before activation. ModusToolbox™ includes pre-certified bootloader libraries compliant with Uptane framework principles.
Can CAPSENSE™ operate reliably in wet or gloved conditions?
Yes. The CSD implementation achieves >5:1 SNR and includes hardware-based water rejection algorithms. SmartSense auto-tuning dynamically adjusts scan parameters for condensation, saltwater exposure, and thick glove materials - validated per ISO 11452-2 and IEC 61000-4-6 immunity testing.
What development tools are officially supported for CY8C4127AZE-S445?
Infineon officially supports ModusToolbox™ (v3.1+) and PSoC™ Creator (v4.4). Both provide full peripheral configuration, CAPSENSE™ tuning GUI, CAN/TTCAN stack, and debug via KitProg3 or MiniProg4. Third-party IDEs (Keil MDK, IAR EWARM) are supported via PDL-based projects generated from ModusToolbox™.
CY8C4127AZE-S445 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-S445 FAQ
1.How can I place an order for CY8C4127AZE-S445 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4127AZE-S445 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-S445 reliable?
The price and inventory of CY8C4127AZE-S445 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4127AZE-S445 is usually 5 days.
3.What payment methods are accepted for CY8C4127AZE-S445?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4127AZE-S445 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4127AZE-S445?
CY8C4127AZE-S445 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4127AZE-S445 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-S445?
For technical support, including CY8C4127AZE-S445 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4127AZE-S445 requirements.
6.How does Aetrix verify that CY8C4127AZE-S445 is sourced from the original manufacturer or authorized distributors?
All CY8C4127AZE-S445 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-S445 meets industry standards.
7.What is the process for return or replacement of CY8C4127AZE-S445?
All CY8C4127AZE-S445 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4127AZE-S445, 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-S445 part is unused and in its original packaging.
Return procedure for CY8C4127AZE-S445:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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