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Infineon Technologies CY8C4146AZE-S255T
- Part No.:
- CY8C4146AZE-S255T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
CY8C4146AZE-S255T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,286
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Product details
Overview
CY8C4146AZE-S255T 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 SmartSense auto-tuning. It includes five reconfigurable serial communication blocks (SCB), eight 16-bit TCPWM units, and a CAN 2.0B controller with time-triggered support - deployed in automotive body control modules requiring robust touch interfaces and real-time bus communication.
For engineers reviewing the CY8C4146AZE-S255T datasheet, CY8C4146AZE-S255T pinout, CY8C4146AZE-S255T application, or CY8C4146AZE-S255T equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-die CAPSENSE™ SNR >5:1, CAN 2.0B + TTCAN compliance, Deep Sleep current ≤2.5 µA, and 54-GPIO flexibility with programmable drive strength and slew rate.
Technical Context
The device integrates a dual-domain clock system with ±2% IMO, 32-kHz ILO/WCO, and 4–33 MHz ECO supporting PLL-based 48-MHz core operation. Its analog subsystem delivers simultaneous high-precision sensing via 12-bit 1-Msps SAR ADC (with sequencer and averaging) and sigma-delta CSD for water-tolerant touch detection.
Digital resources include eight TCPWM blocks supporting quadrature decoding and comparator-triggered kill signals for motor control safety, plus five SCBs configurable as I²C/SPI/UART/LIN - all runtime-reconfigurable without reset. The CAN block implements full CAN 2.0B with TTCAN timing accuracy critical for distributed automotive control networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - enables deterministic real-time execution of automotive control firmware with Thumb-2 instruction set and NVIC. |
| Memory | 128 KB flash (with Read Accelerator), 16 KB SRAM - supports secure bootloader storage, OTA update partitions, and real-time sensor data buffering. |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended, channel sequencer with signal averaging - provides high-resolution analog input for battery monitoring or temperature sensing. |
| CAPSENSE™ | Capacitive sigma-delta (CSD) with >5:1 SNR and hardware SmartSense tuning - delivers reliable touch detection under moisture, glove, or EMI stress in vehicle HMI panels. |
| CAN Interface | CAN 2.0B with time-triggered CAN (TTCAN) support - ensures deterministic message scheduling and synchronization across distributed ECUs in chassis networks. |
| Power Range | 1.71 V to 5.5 V supply, Deep Sleep current ≤2.5 µA - enables always-on wake-on-touch functionality while meeting automotive low-power requirements. |
| GPIO | 54 programmable pins, all CAPSENSE™/analog/digital capable, with configurable drive strength and slew rate - simplifies PCB routing and eliminates external level shifters in mixed-voltage systems. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, wettable flank option for automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power domains | Four independent 1.71–5.5 V supplies enabling mixed-voltage GPIO interfacing (e.g., 3.3 V MCU logic + 5 V sensor interface). |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | 54 total pins; each supports CAPSENSE™, analog input/output, digital logic, or SCB/CAN functions - assigned dynamically in PSoC™ Creator. |
| CAN_TX / CAN_RX | CAN physical layer interface | Dedicated differential pair routed internally to CAN controller; requires external CAN transceiver (e.g., TJA1042) for bus connection. |
| XTAL_IN / XTAL_OUT | External crystal oscillator input | Supports 4–33 MHz ECO for precise timing; used with PLL to generate 48 MHz system clock with <±50 ppm stability over temperature. |
| WCO_IN / WCO_OUT | 32.768 kHz watch crystal interface | Enables RTC operation and low-power wake-up timing during Deep Sleep mode without waking CPU. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual firmware tuning and maintains stable touch performance across voltage, temperature, and aging drift. |
| Runtime-Reconfigurable SCBs | Five serial blocks can be independently assigned as I²C master/slave, SPI master/slave, UART, or LIN slave - no hardware change needed for protocol migration. |
| Deep Sleep with Analog Active | Opamps, comparators, and CSD block remain operational at ≤2.5 µA system current - enables continuous touch wake-up or analog monitoring without CPU intervention. |
| TTCAN Timing Accuracy | Time-triggered CAN implementation with synchronized local time base and deterministic message transmission windows - meets ISO 11898-1:2015 timing constraints for safety-critical networks. |
| Programmable Logic (Smart I/O) | Boolean logic on port inputs/outputs implemented in hardware - offloads simple state-machine tasks from CPU (e.g., LED blink patterns or button debouncing). |
Applications
| Automotive Door Module | Electric Power Steering (EPS) HMI |
|---|---|
Use Scenario: Integrated door control unit managing window lift, mirror fold, lock actuation, and capacitive touch panel. IC Role / Device Role / Timing Role: Main MCU executing real-time motor control, CAPSENSE™ touch processing, and LIN communication to body domain controller. Use Value: Single-chip integration reduces BOM count and PCB area; Deep Sleep + SmartSense enables instant wake-on-touch while maintaining <2.5 µA quiescent current. |
Use Scenario: Driver-facing EPS control panel with tactile feedback, status LEDs, and fault indication. IC Role / Device Role / Timing Role: Touch-sensing and display-driving MCU interfacing via CAN to EPS ECU for torque assist coordination. Use Value: CSD SNR >5:1 ensures reliable operation with wet/gloved fingers; TTCAN support enables synchronized status updates with steering angle and torque sensors. |
| Body Control Module (BCM) | Automotive HVAC Panel |
Use Scenario: Centralized BCM managing lighting, wipers, horn, and interior ambient lighting with touch sliders. IC Role / Device Role / Timing Role: System controller handling multi-protocol communication (CAN, LIN), analog sensor acquisition, and CAPSENSE™ UI. Use Value: Five SCBs allow concurrent CAN (chassis network), LIN (wiper/washer), and I²C (ambient light sensor) without software arbitration overhead. |
Use Scenario: Climate control interface with rotary encoders, push buttons, and segmented LCD display. IC Role / Device Role / Timing Role: Dedicated touch and display controller using GPIO-driven LCD segment drive and CSD for slider/bar interaction. Use Value: On-die LCD drive capability eliminates external display driver IC; programmable slew rate prevents EMI during segment switching in sensitive RF environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4147AZI-S455 | Same PSoC™ 4100S Plus family, but Grade-E (–40°C to +125°C), 64-pin TQFP, 256 KB flash, 32 KB SRAM. | Targeted for under-hood applications (e.g., engine control ancillaries) requiring extended temperature range and higher memory headroom. | Select when operating ambient exceeds +105°C or firmware size exceeds 128 KB; not drop-in compatible due to package and pin count difference. |
| NXP S32K144HAT0MLHT | ARM Cortex-M4F @ 112 MHz, CAN FD, 512 KB flash, 128 KB SRAM, AEC-Q100 Grade-1 (–40°C to +125°C). | Higher-performance platform for complex real-time control (e.g., motor vector control), with CAN FD bandwidth and floating-point acceleration. | Choose when migrating from legacy 8/16-bit MCUs to ARM-based control with CAN FD upgrade path and advanced math-intensive algorithms. |
Compared with CY8C4146AZE-S255T, CY8C4147AZI-S455 offers extended temperature and memory for under-hood use, while S32K144HAT0MLHT delivers higher compute throughput and CAN FD - making the former ideal for cost-sensitive body electronics and the latter for next-gen powertrain-integrated HMI.
Availability
CY8C4146AZE-S255T is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering HMIs, HVAC panels, and door module designs requiring stable component supply, AEC-Q100 qualification, and long-term lifecycle assurance.
Supply support for CY8C4146AZE-S255T 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.
CY8C4146AZE-S255T belongs to the PSoC™ 4100S Plus product line, engineered specifically for automotive human-machine interface and distributed control applications demanding integrated capacitive sensing, CAN connectivity, and AEC-Q100 reliability.
FAQ
Does CY8C4146AZE-S255T support CAN FD?
No. This device integrates a CAN 2.0B controller with time-triggered CAN (TTCAN) capability but does not support CAN FD data rates or frame format. For CAN FD, consider Infineon's AURIX™ TC3xx series or NXP's S32K144. The CAN block complies fully with ISO 11898-1:2015 for classical CAN operation up to 1 Mbps.
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 peripheral configuration, CAPSENSE™ tuning, and debug via MiniProg3 or KitProg3. ModusToolbox™ includes PDL drivers, BSPs for CY8CKIT-149, and CAPSENSE™ middleware with SmartSense API.
Is external flash required for firmware updates over CAN?
No. The device includes 128 KB on-chip flash with dedicated sectors for bootloader and application code. Field firmware updates via CAN are implemented using the PSoC™ Bootloader component, which supports secure signature verification and dual-bank swapping without external memory.
Can all 54 GPIOs be used simultaneously as CAPSENSE™ electrodes?
Yes - all GPIOs support CAPSENSE™ CSD functionality, but practical electrode count depends on scan time and SNR requirements. With SmartSense auto-tuning and hardware-accelerated scanning, up to 48 electrodes can be scanned in <100 ms at >5:1 SNR under typical automotive conditions.
CY8C4146AZE-S255T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 64-LQFP
- Series:
- PSOC™ 4 CY8C4100S Plus
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 48MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 54
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x10b, 16x12b SAR, Sigma-Delta; D/A 1x12b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4146AZE-S255T FAQ
1.How can I place an order for CY8C4146AZE-S255T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146AZE-S255T 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 CY8C4146AZE-S255T reliable?
The price and inventory of CY8C4146AZE-S255T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146AZE-S255T is usually 5 days.
3.What payment methods are accepted for CY8C4146AZE-S255T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146AZE-S255T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146AZE-S255T?
CY8C4146AZE-S255T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146AZE-S255T 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 CY8C4146AZE-S255T?
For technical support, including CY8C4146AZE-S255T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146AZE-S255T requirements.
6.How does Aetrix verify that CY8C4146AZE-S255T is sourced from the original manufacturer or authorized distributors?
All CY8C4146AZE-S255T 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 CY8C4146AZE-S255T meets industry standards.
7.What is the process for return or replacement of CY8C4146AZE-S255T?
All CY8C4146AZE-S255T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146AZE-S255T, 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 CY8C4146AZE-S255T part is unused and in its original packaging.
Return procedure for CY8C4146AZE-S255T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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