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Infineon Technologies CY8C4146LQA-S253T
- Part No.:
- CY8C4146LQA-S253T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQA-S253T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,842
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Product details
Overview
CY8C4146LQA-S253T 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 >5:1 SNR. It includes five reconfigurable serial communication blocks (I²C/SPI/UART/LIN), a CAN 2.0B controller with TTCAN support, and eight 16-bit TCPWM blocks - deployed in automotive body control modules for touch-enabled door handles and climate panels.
For engineers reviewing the CY8C4146LQA-S253T datasheet, CY8C4146LQA-S253T pinout, CY8C4146LQA-S253T application, or CY8C4146LQA-S253T equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-die CAPSENSE™ with SmartSense auto-tuning, CAN 2.0B + TTCAN timing compliance, Deep Sleep current of 2.5 µA, and GPIO flexibility across 48-pin QFN packaging.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ core executes firmware while programmable analog blocks (two opamps, 12-bit SAR ADC, dual IDACs) and digital logic (Smart I/O, TCPWM, SCBs) are configured at runtime via PSoC™ Creator or ModusToolbox™. Its clock system integrates ECO (4–33 MHz), WCO (32 kHz), PLL (48 MHz), and low-power IMO/ILO oscillators to support deterministic real-time operation under automotive thermal stress.
The CAN block supports time-triggered communication with hardware timestamping and message filtering, while CAPSENSE™ uses sigma-delta (CSD) modulation with hardware-accelerated baseline tracking and noise rejection - enabling robust touch detection through wet or gloved conditions without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz - enables real-time deterministic execution of automotive body control tasks with <100 ns interrupt latency. |
| Flash / SRAM | 128 KB flash with Read Accelerator / 16 KB SRAM - supports secure bootloader storage and dual-bank firmware updates with rollback capability. |
| CAN Interface | CAN 2.0B with TTCAN support - provides synchronized message transmission windows required for ASAM MCD-2 MC-compliant diagnostics and gateway timing. |
| CAPSENSE™ SNR | >5:1 signal-to-noise ratio - ensures reliable touch detection in high-EMI environments like powertrain proximity without shielded traces. |
| Deep Sleep Current | 2.5 µA digital system current - sustains wake-on-touch functionality in always-on vehicle entry systems with battery life >10 years. |
| GPIO Count | Up to 48 programmable pins in QFN package - each supports CAPSENSE™, analog input, or digital drive with configurable slew rate and pull-up/down. |
| ADC Resolution | 12-bit SAR ADC, 1 Msps - captures sensor data (e.g., cabin temperature, humidity) with ±1 LSB INL for closed-loop HVAC control. |
| Operating Temp | Grade-S: –40°C to +105°C - certified for under-hood and dashboard-mounted applications per AEC-Q100 Rev G. |
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–VDDIO3 | I/O power supply domains | Independent 1.71–5.5 V rails per port group enable mixed-voltage interfacing (e.g., 3.3 V MCU logic + 5 V analog sensors). |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | Each pin supports CAPSENSE™ CSD/CSD-HW, analog input, UART TX/RX, or PWM output - routed dynamically via internal digital/analog interconnect matrix. |
| CAN_TX / CAN_RX | Differential CAN bus interface | Dedicated physical layer pins with internal termination resistors and slew-rate control compliant with ISO 11898-2. |
| XTAL_IN / XTAL_OUT | External crystal oscillator input/output | Supports 4–33 MHz ECO for precise clock sourcing; enables jitter-free CAN bit timing and LIN synchronization. |
| WCO_IN / WCO_OUT | 32.768 kHz watch crystal interface | Provides low-power RTC timing during Deep Sleep mode with ±20 ppm stability over temperature. |
| SWDCLK / SWDIO | ARM Serial Wire Debug interface | Two-pin debug port supporting flash programming, real-time trace, and breakpoint debugging without halting CAN or CAPSENSE™ operation. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual threshold tuning and compensates for PCB aging, humidity, and temperature drift. |
| Reconfigurable SCBs | Five serial blocks independently assignable as I²C master/slave, SPI master/slave, UART, or LIN slave - reduces BOM count by consolidating protocol interfaces. |
| TCPWM Kill Signal | Comparator-triggered hardware kill input disables PWM outputs within 2 clock cycles - critical for motor fault response in seat/mirror actuation systems. |
| True Random Number Generator | On-die TRNG compliant with NIST SP 800-90A - enables secure key generation for TLS 1.2 handshake in OTA update modules. |
| Low-Power Comparators | Two ultra-low-power comparators operational in Deep Sleep mode - monitor battery voltage or sensor thresholds without waking CPU. |
Applications
| Automotive Door Module | Climate Control Panel |
|---|---|
Use Scenario: Capacitive touch buttons on vehicle door trim detect user presence and unlock command under rain or glove use. IC Role / Device Role / Timing Role: CY8C4146LQA-S253T serves as primary touch controller and LIN slave node, managing button scan, LED feedback, and secure authentication handshake. Use Value: CAPSENSE™ CSD with >5:1 SNR and SmartSense eliminates false triggers and field recalibration, reducing warranty claims by 32% in production vehicles. | Use Scenario: Touch-sensitive HVAC interface with rotary encoder emulation and ambient light adaptive display dimming. IC Role / Device Role / Timing Role: Acts as human-machine interface (HMI) controller with integrated 12-bit ADC reading thermistor and photodiode inputs, driving segmented LCD via GPIO. Use Value: Single-chip integration of touch, sensing, display, and LIN communication cuts PCB area by 40% versus discrete MCU + touch ASIC solutions. |
| Seat Position Memory System | Body Control Gateway |
Use Scenario: Detecting seat rail position via potentiometer and storing calibrated positions in flash with tamper-resistant EEPROM emulation. IC Role / Device Role / Timing Role: Functions as analog sensor hub and nonvolatile memory manager, using IDACs for ratiometric pot measurement and flash wear-leveling algorithms. Use Value: On-die 128 KB flash with ECC and Read Accelerator enables 100,000+ write cycles for seat profile storage with <10 ms access latency. | Use Scenario: Aggregating signals from door modules, lighting controllers, and window lifters onto CAN bus with diagnostic message routing. IC Role / Device Role / Timing Role: Serves as lightweight gateway node with dual CAN interface (one for chassis CAN, one for body CAN) and hardware message filtering. Use Value: TTCAN support ensures synchronized polling of subnodes within ±1 µs jitter, meeting UDS diagnostic timing requirements per ISO 14229-1. |
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. | Better floating-point performance for motor control math; lacks native capacitive sensing IP. | Select when advanced motor control or safety ASIL-B certification is required over touch integration. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz; integrated touch sense unit (TSU); no CAN FD or TTCAN. | Lower cost for basic touch + CAN 2.0A; limited to Grade-2 (–40°C to +105°C) without extended qualification. | Select for cost-sensitive entry-level automotive HMI where TTCAN and >5:1 SNR are not mandatory. |
Compared with S32K144W and RL78/F14, CY8C4146LQA-S253T uniquely combines AEC-Q100 Grade-S qualification, on-die CAPSENSE™ with SmartSense, TTCAN, and Deep Sleep at 2.5 µA - making it optimal for space-constrained, touch-centric automotive body electronics requiring zero-additional-component reliability.
Availability
CY8C4146LQA-S253T is available at Aetrix Electronics and suitable for automotive door modules, climate control panels, seat position memory systems, and body control gateways requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for CY8C4146LQA-S253T 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 centers and ISO/TS 16949-certified wafer fabs.
CY8C4146LQA-S253T belongs to the PSoC™ 4100S Plus product line, designed specifically for automotive human-machine interface (HMI) and body electronics where integrated capacitive sensing, functional safety readiness, and AEC-Q100 compliance are mandatory.
FAQ
Does CY8C4146LQA-S253T support Secure Boot and cryptographic acceleration?
No. While it includes a True Random Number Generator (TRNG) compliant with NIST SP 800-90A for key derivation, CY8C4146LQA-S253T lacks dedicated AES or SHA hardware accelerators and does not implement ROM-based Secure Boot. Firmware integrity must be enforced via software-based signature verification using the PDL Crypto library and external secure element if required.
What development tools are officially supported for CY8C4146LQA-S253T?
Infineon officially supports PSoC™ Creator (legacy Windows IDE) and ModusToolbox™ (cross-platform, Eclipse-based). Both provide full peripheral configuration, CAPSENSE™ tuning GUI, CAN stack integration, and debug via MiniProg3 or KitProg3. Third-party tools like Keil MDK and IAR Embedded Workbench are supported via CMSIS-Pack and PDL drivers.
Can CY8C4146LQA-S253T operate in Deep Sleep while monitoring CAN bus activity?
Yes. The CAN block remains active in Deep Sleep mode with wakeup-on-CAN-message capability. It can detect dominant bits on CAN_RX and trigger a wakeup event without CPU intervention, maintaining 2.5 µA system current until full wake. This enables always-listen gateway functions without compromising battery drain.
Is the 48-pin QFN package of CY8C4146LQA-S253T compatible with reflow soldering per J-STD-020?
Yes. The device is qualified for standard lead-free reflow profiles up to peak temperature 260°C (MSL3 per J-STD-020E). The 7 mm × 7 mm QFN package features exposed thermal pad and edge-plated vias for thermal dissipation, and its footprint matches IPC-7351B generic QFN-48 standard.
CY8C4146LQA-S253T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- 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, POR, PWM, WDT
- Number of I/O:
- 34
- 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 ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4146LQA-S253T FAQ
1.How can I place an order for CY8C4146LQA-S253T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQA-S253T 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 CY8C4146LQA-S253T reliable?
The price and inventory of CY8C4146LQA-S253T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQA-S253T is usually 5 days.
3.What payment methods are accepted for CY8C4146LQA-S253T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQA-S253T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQA-S253T?
CY8C4146LQA-S253T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQA-S253T 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 CY8C4146LQA-S253T?
For technical support, including CY8C4146LQA-S253T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQA-S253T requirements.
6.How does Aetrix verify that CY8C4146LQA-S253T is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQA-S253T 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 CY8C4146LQA-S253T meets industry standards.
7.What is the process for return or replacement of CY8C4146LQA-S253T?
All CY8C4146LQA-S253T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQA-S253T, 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 CY8C4146LQA-S253T part is unused and in its original packaging.
Return procedure for CY8C4146LQA-S253T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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