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Infineon Technologies CY8C4146LQS-S253
- Part No.:
- CY8C4146LQS-S253
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQS-S253.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,382
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Product details
Overview
CY8C4146LQS-S253 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 (I²C/SPI/UART/LIN), CAN 2.0B with TTCAN support, and eight 16-bit TCPWMs - deployed in automotive body control modules for touch-enabled door handles and climate panels.
For engineers reviewing the CY8C4146LQS-S253 datasheet, CY8C4146LQS-S253 pinout, CY8C4146LQS-S253 application, or CY8C4146LQS-S253 equivalent, key selection criteria include AEC-Q100 Grade-S qualification, on-chip CAPSENSE™ SNR >5:1 with water tolerance, CAN 2.0B + TTCAN timing compliance, Deep Sleep current of 2.5 µA, and GPIO flexibility across 54 pins 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 (two opamps, 12-bit 1-Msps SAR ADC, two IDACs) and digital logic (Smart I/O, TCPWM, SCBs) operate concurrently under shared clock domains. Its clock system integrates ECO (4–33 MHz), WCO (32 kHz), PLL (48 MHz output), IMO (±2%), and ILO - enabling deterministic real-time response in safety-critical automotive subsystems.
Capacitive sensing is implemented via dedicated CSD hardware with sigma-delta modulation, delivering >5:1 SNR and hardware-accelerated SmartSense tuning that eliminates manual calibration. The CAN block supports time-triggered operation with configurable message objects, freeze mode, and bus-off recovery - meeting ISO 11898-1 requirements for deterministic network timing.
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 dual-bank firmware updates and runtime data buffering for CAN/CAPSENSE™ co-processing. |
| Operating Voltage | 1.71 V to 5.5 V - allows direct interface with 3.3 V and 5 V automotive peripherals without level-shifting. |
| Temperature Range | Grade-S: –40°C to +105°C - qualified for under-hood and cabin-mounted ECUs per AEC-Q100 Rev G. |
| Deep Sleep Current | 2.5 µA digital + operational analog - sustains capacitive wake-on-touch and CAN bus monitoring during vehicle sleep modes. |
| CAN Interface | CAN 2.0B with TTCAN support - provides time-triggered scheduling, synchronization, and fault confinement for ASIL-B–capable networks. |
| CAPSENSE™ SNR | >5:1 signal-to-noise ratio - ensures reliable touch detection through wet or gloved conditions in automotive HMI applications. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad. Pin assignment validated per Infineon datasheet 002-20072 Rev. *S Section 2 "Pinouts" and Table 2-1 "CY8C4146LQS-S253 Pin Definitions".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O power supply rails | Independent 1.71–5.5 V domains per port group - enable mixed-voltage interfacing (e.g., 3.3 V MCU core + 5 V analog sensors). |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | 54 total pins; each supports CAPSENSE™, analog input/output, digital logic, or LCD segment drive - no fixed-function pin lock-in. |
| CAN_TX / CAN_RX | Dedicated CAN transceiver interface | Direct connection to external CAN PHY; supports dominant/recessive bit timing per ISO 11898-2 with internal termination control. |
| XTAL_IN / XTAL_OUT | External crystal oscillator terminals | Drive 4–33 MHz ECO for high-accuracy timing; required for CAN bit-rate stability and TTCAN synchronization. |
| WCO_IN / WCO_OUT | 32-kHz watch crystal oscillator | Provides low-power RTC and Deep Sleep wake-up source independent of main clock domain. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CAPSENSE™ CSD engine | Offloads touch scanning to dedicated sigma-delta modulator - reduces CPU load by >90% vs. software-based solutions and enables <10-ms scan intervals. |
| SmartSense auto-tuning | Real-time capacitance compensation using on-chip IDACs and firmware-controlled thresholds - eliminates factory calibration and field drift correction. |
| Reconfigurable SCBs | Five independent serial blocks dynamically assignable as I²C master/slave, SPI master/slave, UART, or LIN slave - simplifies BOM consolidation across variants. |
| TTCAN support | Time-triggered communication with global time base, schedule tables, and error confinement - meets AUTOSAR COM stack timing requirements for ASIL-B systems. |
| Deep Sleep with active analog | 2.5 µA system current while running CAPSENSE™ and monitoring CAN bus - extends battery life in always-on vehicle entry systems. |
Applications
| Automotive Door Module | Climate Control Panel |
|---|---|
Use Scenario: Capacitive touch buttons and sliders on vehicle door trim for window lift, mirror fold, and lock/unlock functions. IC Role / Device Role / Timing Role: Primary MCU executing touch firmware, CAN gateway, and PWM motor control - synchronizing CAPSENSE™ scans with CAN frame transmission windows. Use Value: >5:1 SNR and SmartSense ensure reliable operation under condensation or rain exposure; TTCAN guarantees deterministic command delivery within 2 ms. | Use Scenario: Touch-sensitive HVAC interface with rotary encoder emulation and ambient temperature feedback. IC Role / Device Role / Timing Role: Sensor hub aggregating CAPSENSE™, 12-bit SAR ADC (NTC reading), and PWM fan control - coordinated via TCPWM quadrature decoder and comparator-triggered kill signals. Use Value: Integrated opamps buffer NTC signals without external components; Deep Sleep mode maintains touch readiness at <3 µA during vehicle off-state. |
| Body Control Unit (BCU) | Seat Position Memory System |
Use Scenario: Centralized control of lighting, wipers, and door modules with CAN network management and diagnostics. IC Role / Device Role / Timing Role: CAN 2.0B node with freeze mode and bus-off recovery - managing UDS diagnostic sessions and periodic network health checks. Use Value: Hardware TTCAN scheduler ensures diagnostic request/response timing compliance; 128 KB flash stores multiple ECU configuration profiles. | Use Scenario: Motorized seat position storage and recall using capacitive slider + non-volatile memory. IC Role / Device Role / Timing Role: Dual-role controller: CAPSENSE™ for user input and TCPWM-driven H-bridge gate driver for DC motors - with synchronized current sensing via IDACs. Use Value: On-chip IDACs provide precise motor current feedback without shunt resistors; EEPROM-like flash wear-leveling preserves seat profile data over 100k cycles. |
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 @ 112 MHz; includes Ethernet MAC and FlexRay; lacks integrated CAPSENSE™ | Targets higher-compute ADAS gateway roles; requires external touch controller for HMI | Select when needing Ethernet/FlexRay or floating-point math; not drop-in for CAPSENSE™-centric designs |
| Renesas RL78/F14 | 16-bit RL78 core @ 32 MHz; 128 KB flash; AEC-Q100 Grade 2 (–40°C to +105°C); no CAN FD or TTCAN | Suitable for cost-sensitive body electronics without time-triggered networking | Choose for legacy 16-bit migration paths; avoid if TTCAN or >40 MHz real-time response required |
Compared with S32K144W and RL78/F14, CY8C4146LQS-S253 uniquely integrates CAPSENSE™, TTCAN, and Deep Sleep analog operation in a single die - reducing BOM count and PCB area for automotive HMI and body control nodes requiring both touch and deterministic networking.
Availability
CY8C4146LQS-S253 is available at Aetrix Electronics and suitable for automotive body control modules, touch-enabled climate panels, seat position memory systems, and door module ECUs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY8C4146LQS-S253 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, and security ICs - with leadership in AEC-Q100-qualified embedded controllers.
The PSoC™ 4100S Plus product line targets automotive human-machine interface and body electronics, integrating capacitive sensing, CAN, and low-power operation to replace discrete touch + MCU + CAN transceiver solutions in cost- and space-constrained ECUs.
FAQ
Does CY8C4146LQS-S253 support CAN FD?
No. This device implements CAN 2.0B with optional time-triggered CAN (TTCAN) per ISO 11898-4, but does not support CAN FD data rates or flexible data-length frames. TTCAN provides deterministic scheduling and synchronization for ASIL-B applications, whereas CAN FD is used for higher-bandwidth infotainment or ADAS backbones.
What development tools are officially supported for CY8C4146LQS-S253?
Infineon officially supports ModusToolbox™ (v3.1+) and PSoC™ Creator (v4.4) for firmware development. Hardware debugging requires MiniProg3 or KitProg3 programmers. The CY8CKIT-149 prototyping kit provides validated board layout, CAPSENSE™ tuning headers, and CAN transceiver interface - all aligned with the LQS package pinout.
Is the 12-bit SAR ADC capable of simultaneous sampling?
No. The 12-bit SAR ADC has a single conversion core with a channel sequencer supporting up to 32 inputs, but it performs sequential conversions - not true simultaneous sampling. For multi-channel phase-aligned acquisition, external analog front-end multiplexing or external simultaneous-sampling ADCs are required.
How is CAPSENSE™ performance affected by PCB stack-up?
CAPSENSE™ SNR >5:1 assumes standard 4-layer PCB with dedicated ground plane beneath sensor traces and 0.2 mm minimum solder mask thickness. Thinner solder mask or split ground planes increase noise coupling; Infineon's AN85951 specifies 0.15 mm minimum dielectric thickness between sensor and ground layer to maintain specified water tolerance and SNR.
CY8C4146LQS-S253 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 48MHz
- Connectivity:
- FIFO, I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, Temp Sensor, 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, 12x12b SAR; D/A 2x7b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
CY8C4146LQS-S253 FAQ
1.How can I place an order for CY8C4146LQS-S253 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQS-S253 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 CY8C4146LQS-S253 reliable?
The price and inventory of CY8C4146LQS-S253 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQS-S253 is usually 5 days.
3.What payment methods are accepted for CY8C4146LQS-S253?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQS-S253 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQS-S253?
CY8C4146LQS-S253 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQS-S253 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 CY8C4146LQS-S253?
For technical support, including CY8C4146LQS-S253 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQS-S253 requirements.
6.How does Aetrix verify that CY8C4146LQS-S253 is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQS-S253 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 CY8C4146LQS-S253 meets industry standards.
7.What is the process for return or replacement of CY8C4146LQS-S253?
All CY8C4146LQS-S253 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQS-S253, 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 CY8C4146LQS-S253 part is unused and in its original packaging.
Return procedure for CY8C4146LQS-S253:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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