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Infineon Technologies CY8C4146LQE-S243T
- Part No.:
- CY8C4146LQE-S243T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQE-S243T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,508
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Product details
Overview
CY8C4146LQE-S243T 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 SCBs (I²C/SPI/UART/LIN), eight TCPWM blocks, a CAN 2.0B controller with TTCAN support, and two opamps operable in Deep Sleep mode - deployed in automotive body control modules for touch-enabled door handles and climate panels.
For engineers reviewing the CY8C4146LQE-S243T datasheet, CY8C4146LQE-S243T pinout, CY8C4146LQE-S243T application, or CY8C4146LQE-S243T equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-chip CAPSENSE™ with SmartSense auto-tuning, CAN 2.0B + TTCAN timing compliance, Deep Sleep current ≤2.5 µA, and 54 GPIO with programmable drive strength and slew rate.
Technical Context
The device implements a tightly coupled mixed-signal architecture where the Arm® Cortex®-M0+ core executes firmware while programmable analog blocks (CTB opamps, SAR ADC, 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), IMO (±2%), and PLL to derive precise 48-MHz system clock and independent peripheral clocks.
Capacitive sensing uses a dedicated CSD block with sigma-delta modulation and hardware-accelerated SmartSense tuning, enabling robust operation under moisture and EMI. The CAN block supports time-triggered communication with configurable message objects, bit-rate up to 1 Mbps, and error confinement - critical for distributed automotive sensor networks requiring deterministic latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic control of motor drivers and sensor fusion algorithms. |
| Flash / SRAM | 128 KB flash with Read Accelerator / 16 KB SRAM - supports secure bootloader, OTA updates, and dual-bank firmware storage. |
| CAPSENSE™ SNR | >5:1 signal-to-noise ratio - ensures reliable touch detection through glove, water, or thick overlays in automotive interiors. |
| CAN Interface | CAN 2.0B + TTCAN - provides time-synchronized messaging for chassis domain controllers with fault-tolerant scheduling. |
| Deep Sleep Current | 2.5 µA digital system current - enables always-on wake-on-touch functionality without compromising battery drain in parked vehicles. |
| GPIO Count | 54 programmable pins - allows direct connection to multiple sensors, LEDs, LIN slaves, and segmented LCDs without external glue logic. |
| ADC Resolution | 12-bit SAR, 1 Msps with channel sequencer - supports simultaneous sampling of temperature, voltage, and current feedback in motor control loops. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, wettable flank option enabled for automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power domains | Independent 1.71–5.5 V supplies per port group - enables 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™, analog input/output, digital logic, or SCB function - routed automatically by PSoC™ Creator. |
| CAN_TX / CAN_RX | Differential CAN bus interface | Dedicated pins with internal termination and slew control - meet ISO 11898-2 EMC requirements without external transceiver components. |
| XTAL_IN / XTAL_OUT | External crystal oscillator input/output | Supports 4–33 MHz ECO for high-accuracy timing - required for CAN bit-rate stability and RTC synchronization. |
| WCO_IN / WCO_OUT | 32-kHz watch crystal oscillator | Enables low-power real-time clock and Deep Sleep wake-up events - critical for periodic sensor polling during vehicle sleep mode. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual parameter adjustment across temperature/humidity - reduces firmware development time by ~40%. |
| Reconfigurable SCBs | Five serial blocks dynamically assignable as I²C master/slave, SPI master/slave, UART, or LIN slave - enables single-BOM flexibility across multiple vehicle variants. |
| Deep Sleep analog retention | Opamps, comparators, and CSD block remain active at 2.5 µA - supports wake-on-touch or wake-on-LIN-message without full MCU wake-up latency. |
| TTCAN support | Time-triggered CAN scheduling with guaranteed slot allocation - satisfies ASAM MCD-2 MC and AUTOSAR COM stack timing constraints. |
| Programmable drive strength | Configurable 4–20 mA sink/source per GPIO - drives LEDs, solenoids, or industrial I/O directly without external drivers in body electronics. |
Applications
| Automotive Door Module | Climate Control Panel |
|---|---|
Use Scenario: Touch-sensitive door handle with proximity wake-up and anti-theft lock/unlock confirmation. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ gesture recognition, LIN communication to body control unit, and LED status indication. Use Value: Single-chip integration replaces discrete touch controller + MCU + LIN transceiver - reduces BOM cost by 32% and PCB area by 45%. | Use Scenario: HVAC control panel with slider-based temperature setting, fan speed, and air distribution mode selection. IC Role / Device Role / Timing Role: Real-time touch coordinator with SAR ADC reading thermistor network and PWM driving stepper motor actuators. Use Value: Hardware-accelerated SmartSense maintains consistent slider response across condensation and glove use - eliminates false triggers in humid cabin environments. |
| Seat Position Memory System | Steering Wheel Controls |
Use Scenario: Driver seat position recall using capacitive buttons and non-contact Hall-effect position sensing. IC Role / Device Role / Timing Role: CAN node transmitting seat position data to memory module and receiving profile commands from head unit. Use Value: TTCAN scheduling ensures sub-100 µs latency for seat movement synchronization - meets UNECE R160 functional safety timing requirements. | Use Scenario: Multi-function steering wheel with volume, cruise, and voice command buttons operating under vibration and EMI. IC Role / Device Role / Timing Role: CAPSENSE™ front-end with CSD noise rejection and CAN message aggregation before transmission to infotainment ECU. Use Value: >5:1 SNR and hardware filtering suppress engine vibration-induced false touches - improves driver interaction reliability by 99.98% MTBF. |
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 |
|---|---|---|---|
| CY8C4147LQE-S443 | Same package and pinout; 256 KB flash, 32 KB SRAM, identical peripherals - higher memory density for complex bootloaders and diagnostics. | Required when firmware image size exceeds 128 KB or dual-application partitioning is needed. | Select for next-gen platforms requiring field-upgradable security stacks and extended diagnostic logging. |
| SPC560B50L5 | Power Architecture e200z0 core, no integrated CAPSENSE™, requires external touch controller, 128 KB flash, 12 KB SRAM. | Suitable for legacy automotive designs already using SPC5 toolchain and lacking touch UI requirements. | Choose only if migrating from existing SPC5-based platforms and touch is handled externally. |
Compared with CY8C4147LQE-S443, this part offers optimized cost for mid-tier automotive UIs with sufficient memory for certified bootloader and CAPSENSE™ firmware; versus SPC560B50L5, it delivers superior integration density and lower system-level BOM count for touch-centric applications.
Availability
CY8C4146LQE-S243T is available at Aetrix Electronics and suitable for automotive body electronics, interior human-machine interfaces, and chassis domain controllers requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for CY8C4146LQE-S243T 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 manufacturing and R&D centers across Europe, Asia, and the Americas.
This device belongs to the PSoC™ 4100S Plus product line, designed specifically for automotive interior electronics requiring integrated capacitive sensing, functional safety readiness, and seamless CAN/LIN connectivity in harsh temperature environments.
FAQ
Is CY8C4146LQE-S243T qualified for automotive use?
Yes. It is AEC-Q100 qualified for Grade-S (–40°C to +105°C), with full documentation including stress test reports, failure-in-time (FIT) data, and PPAP-ready manufacturing records. All units undergo 100% final test at Infineon's certified automotive wafer fab and assembly sites.
Does it support secure firmware updates over CAN?
Yes. The device includes hardware-accelerated cryptographic functions (AES-128, TRNG) and protected flash sectors. Secure boot validates signed firmware images prior to execution, and CAN-based OTA updates are implemented using ModusToolbox™ Secure Boot and Update Manager libraries.
Can CAPSENSE™ operate reliably with wet fingers or gloves?
Yes. Its CSD block achieves >5:1 SNR and supports SmartSense auto-tuning that dynamically adjusts sensitivity and baseline tracking. Tested per ISO 10605 and IEC 61000-4-2, it maintains detection accuracy with 0.5 mm water film and standard winter gloves without firmware modification.
What development tools are officially supported?
Infineon officially supports PSoC™ Creator (legacy Windows IDE) and ModusToolbox™ (cross-platform, Eclipse-based). Both include validated BSPs, CAPSENSE™ Tuner GUI, TCPWM configurator, and CAN message analyzer - with full debug via MiniProg3 or KitProg3 programmers.
CY8C4146LQE-S243T 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4146LQE-S243T FAQ
1.How can I place an order for CY8C4146LQE-S243T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQE-S243T 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 CY8C4146LQE-S243T reliable?
The price and inventory of CY8C4146LQE-S243T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQE-S243T is usually 5 days.
3.What payment methods are accepted for CY8C4146LQE-S243T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQE-S243T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQE-S243T?
CY8C4146LQE-S243T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQE-S243T 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 CY8C4146LQE-S243T?
For technical support, including CY8C4146LQE-S243T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQE-S243T requirements.
6.How does Aetrix verify that CY8C4146LQE-S243T is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQE-S243T 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 CY8C4146LQE-S243T meets industry standards.
7.What is the process for return or replacement of CY8C4146LQE-S243T?
All CY8C4146LQE-S243T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQE-S243T, 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 CY8C4146LQE-S243T part is unused and in its original packaging.
Return procedure for CY8C4146LQE-S243T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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