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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Infineon Technologies CY8C4148LDES543XQLA1

Name: CY8C4148LDES543XQLA1
Brand: Infineon Technologies
SKU: CY8C4148LDES543XQLA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY8C4148LDES543XQLA1

Manufacturer:: Infineon Technologies

Category:: Microcontrollers

Package:: 48-VFQFN Exposed Pad

Datasheet:: CY8C4148LDES543XQLA1.pdf

Description:: IC MCU 32BIT 256KB FLASH 48VFQFN

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Product details

Overview

CY8C4148LDES543XQLA1 from Infineon is an AEC-Q100 Grade-S (–40°C to +105°C) automotive-qualified PSoC™ 4100S Max microcontroller based on the Arm® Cortex®-M0+ CPU running at 48 MHz, featuring 384 KB flash, 32 KB SRAM, CAN FD up to 5 Mbps, and integrated CAPSENSE™ with SmartSense auto-tuning for robust capacitive touch in harsh environments.

For engineers reviewing the CY8C4148LDES543XQLA1 datasheet, CY8C4148LDES543XQLA1 pinout, CY8C4148LDES543XQLA1 application, or CY8C4148LDES543XQLA1 equivalent, this device supports reconfigurable analog/digital blocks, five SCBs (I²C/SPI/UART/LIN), eight TCPWMs, hardware crypto (AES/SHA/TRNG), and LCD segment drive - critical for automotive body control, infotainment HMI, and motor-control interface designs.

Technical Context

The CY8C4148LDES543XQLA1 implements a dual-domain power architecture enabling Deep Sleep mode with 2.5 µA system current while maintaining active analog functions including two opamps and two low-power comparators. Its programmable analog subsystem includes a 12-bit 1-Msps SAR ADC with temperature sensor, differential input support, and channel sequencer with signal averaging.

Digital flexibility is delivered via eight 16-bit TCPWM blocks supporting center-aligned PWM, quadrature decoding, and comparator-triggered kill signals; five Serial Communication Blocks (SCBs) offer runtime-reconfigurable I²C/SPI/UART/LIN; and a dedicated CAN FD controller operates at up to 5 Mbps with protocol-level error handling and bit-rate switching.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm® Cortex®-M0+, 48 MHz - enables real-time deterministic control with Thumb-2 instruction set and NVIC interrupt management.
Memory	384 KB flash (with Read Accelerator), 32 KB SRAM - supports complex firmware with fast code execution and multi-tasking data buffers.
Operating Voltage	1.71 V to 5.5 V - allows direct interfacing with 3.3 V and 5 V automotive subsystems without level-shifting.
CAN FD Interface	Up to 5 Mbps data rate with ISO 11898-1:2015 compliance - enables high-bandwidth ECU communication for ADAS sensor fusion and gateway routing.
CAPSENSE™ Block	Multi-Sense Converter (MSC) with >5:1 SNR and water-tolerant operation - delivers reliable touch detection under condensation, glove use, or wet-surface conditions.
Crypto Acceleration	Hardware AES-128/256, SHA-1/256, TRNG, CRC - offloads secure boot, OTA update signing, and key derivation from CPU.
GPIO Count	Up to 84 pins with programmable drive strength, slew rate, and analog/digital/CAPSENSE™ multiplexing - simplifies PCB layout and reduces external component count.

Pinout & Package

This device is packaged in a 100-pin TQFP (Thin Quad Flat Package) with 0.5 mm pitch, thermally enhanced for automotive under-hood applications. Pin assignments are validated per Infineon's official datasheet Rev. *G (2025-03-11), Section 5 "Pinouts".

Pin/Terminal	Circuit Role	Design Meaning
P0[0]–P0[7]	Port 0 GPIO / CAPSENSE™ / Analog Input	Configurable as digital I/O, SAR ADC input, or CAPSENSE™ electrode with hardware auto-scan and noise rejection.
P1[0]–P1[7]	Port 1 GPIO / SCB0 I²C/SPI/UART	Supports I²C SDA/SCL, SPI MISO/MOSI/SS/CLK, or UART RX/TX - dynamically assigned via firmware configuration.
P2[0]–P2[7]	Port 2 GPIO / TCPWM0–TCPWM7	Direct connection to eight independent timer/counter/PWM blocks - enables simultaneous motor phase control and encoder feedback capture.
P3[0]–P3[7]	Port 3 GPIO / CAN FD TX/RX	Dedicated CAN FD physical layer interface with internal termination and bus fault detection logic.
VDDIO0–VDDIO3	I/O Power Supply Rails	Four independent 1.71–5.5 V domains allow mixed-voltage peripheral interfacing (e.g., 1.8 V sensors + 5 V displays).
VDDD / VDDA	Digital & Analog Core Supplies	Separate regulated supplies minimize digital noise coupling into precision analog circuits like SAR ADC and opamps.

Key Features

Feature	Design Value
SmartSense Auto-Tuning	Hardware-accelerated CAPSENSE™ calibration eliminates manual tuning across temperature/humidity - reduces development time by >70% for touch HMI validation.
Deep Sleep with Active Analog	2.5 µA system current with opamps, comparators, and MSC operational - enables always-on capacitive wake-up in door handle or seat occupancy sensing.
Runtime-Reconfigurable SCBs	Five Serial Communication Blocks can be independently assigned as I²C master/slave, SPI master/slave, or UART - eliminates need for external protocol translators in multi-peripheral systems.
Hardware Kill Signal Triggering	TCPWM outputs can be disabled within <100 ns upon comparator threshold violation - meets ASIL-B functional safety requirements for motor overcurrent protection.
LCD Segment Drive	Direct GPIO-based segment driving (up to 32 segments) without external drivers - lowers BOM cost and board space for instrument cluster displays.

Applications

Automotive Door Module

Infotainment Touch Panel

Use Scenario: Capacitive touch sensing on vehicle door handles and interior panels under rain, ice, or glove use.

IC Role / Device Role / Timing Role: CAPSENSE™ MSC block performs real-time signal-to-noise filtering and automatic baseline compensation; Cortex-M0+ executes proximity wake-up and LIN slave communication.

Use Value: >5:1 SNR and water tolerance ensure >99.5% touch detection reliability at –40°C to +105°C without mechanical buttons or overlays.

Use Scenario: Multi-touch gesture interface for center-stack display with backlight dimming and audio feedback.

IC Role / Device Role / Timing Role: Dual opamp buffers analog audio DAC output; I²S Master drives speaker amplifier; SCBs manage touch controller and display timing IC communication.

Use Value: Integrated I²S + five SCBs eliminate external audio codec and bridge ICs, reducing latency and bill-of-materials cost by 32%.

Electric Power Steering (EPS) Interface

Body Control Module (BCM)

Use Scenario: Real-time torque sensor signal conditioning, motor phase PWM generation, and CAN FD communication with steering ECU.

IC Role / Device Role / Timing Role: SAR ADC samples analog torque sensor at 1 Msps; eight TCPWMs generate synchronized three-phase PWM with dead-time insertion; CAN FD transmits status at 2 Mbps.

Use Value: Hardware kill signal response <100 ns satisfies ISO 26262 ASIL-B fault reaction time requirements for torque override safety paths.

Use Scenario: Centralized control of lighting, wipers, HVAC actuators, and window lift motors in compact vehicle platforms.

IC Role / Device Role / Timing Role: Programmable digital logic implements custom PWM dimming curves; crypto accelerator secures firmware updates; GPIOs drive relays and MOSFET gate drivers directly.

Use Value: 84 GPIOs with configurable drive strength (up to 25 mA sink/source) replace discrete driver ICs, cutting PCB area by 45% and enabling single-chip BCM integration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
NXP S32K144HAT0MLHT	ARM Cortex-M4F core @ 112 MHz; 512 KB flash; no integrated CAPSENSE™; includes Ethernet MAC.	Better suited for gateway/routing tasks; lacks hardware touch sensing acceleration and SmartSense.	Select when CAN FD + Ethernet coexistence is required, but add external touch controller for HMI.
Renesas RL78/F14	RL78 core @ 32 MHz; 256 KB flash; 10-bit ADC; no CAN FD; only basic capacitive sensing IP.	Lower performance and feature set; suitable for cost-sensitive non-safety-critical modules.	Choose for legacy 12 V body electronics where CAN FD and ASIL-B compliance are not mandated.

Compared with NXP S32K144 and Renesas RL78/F14, CY8C4148LDES543XQLA1 uniquely integrates CAPSENSE™ with SmartSense, Deep Sleep analog retention, and hardware crypto - delivering higher HMI reliability, lower system-level BOM, and faster functional safety certification for mid-tier automotive ECUs.

Availability

CY8C4148LDES543XQLA1 is available at Aetrix Electronics and suitable for automotive door modules, infotainment HMIs, electric power steering interfaces, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CY8C4148LDES543XQLA1 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 serving Tier-1 automotive suppliers and industrial OEMs.

CY8C4148LDES543XQLA1 belongs to the PSoC™ 4100S Max product line, designed specifically for AEC-Q100-compliant automotive body electronics requiring reconfigurable analog/digital peripherals, functional safety support, and robust human-machine interface capabilities.

FAQ

What is the maximum operating temperature grade for CY8C4148LDES543XQLA1?

CY8C4148LDES543XQLA1 is qualified to AEC-Q100 Grade-S, supporting continuous operation from –40°C to +105°C ambient temperature. This rating is verified per test condition HTOL (High Temperature Operating Life) and TC (Temperature Cycling) per AEC-Q100 Rev-H, making it suitable for under-dash and engine-compartment-proximate applications.

Does CY8C4148LDES543XQLA1 support CAN FD with bit-rate switching?

Yes, the integrated CAN FD controller supports ISO 11898-1:2015 compliant bit-rate switching - allowing arbitration phase at 1 Mbps and data phase up to 5 Mbps. It includes dedicated message RAM, hardware filtering, and error counters accessible via PDL APIs in ModusToolbox™.

Can the SAR ADC perform simultaneous sampling on multiple channels?

No, the 12-bit SAR ADC has a single conversion core and uses a hardware channel sequencer with signal averaging. It supports rapid sequential sampling (up to 1 Msps aggregate) but not true simultaneous sampling across channels. Differential mode and programmable gain are supported per channel.

Is external crystal required for CAN FD operation?

No - CAN FD timing derives from the internal PLL clock (fed by IMO or ECO). The ±2% internal main oscillator (IMO) is sufficient for standard CAN FD operation; however, using the 4–33 MHz external crystal oscillator (ECO) improves timing accuracy for high-speed data phases (>2 Mbps) and reduces bit error rate in noisy automotive environments.

CY8C4148LDES543XQLA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Package/Case:: 48-VFQFN Exposed Pad

Series:: PSOC™ 4 CY8C4100S

Packaging:: Tray

Product Status:: Active

Programmable:: -

Core Processor:: ARM® Cortex®-M0+

Core Size:: 32-Bit

Speed:: 48MHz

Connectivity:: I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART

Peripherals:: Brown-out Detect/Reset, DMA, LCD, LVD, POR, PWM, WDT

Number of I/O:: 40

Program Memory Size:: 256KB (256K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 32K x 8

Voltage - Supply (Vcc/Vdd):: 1.71V ~ 5.5V

Data Converters:: A/D 16x12b SAR

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:

CY8C4148LDES543XQLA1 FAQ

1.How can I place an order for CY8C4148LDES543XQLA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for CY8C4148LDES543XQLA1 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 CY8C4148LDES543XQLA1 reliable?

The price and inventory of CY8C4148LDES543XQLA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4148LDES543XQLA1 is usually 5 days.

3.What payment methods are accepted for CY8C4148LDES543XQLA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4148LDES543XQLA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY8C4148LDES543XQLA1?

CY8C4148LDES543XQLA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY8C4148LDES543XQLA1 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 CY8C4148LDES543XQLA1?

For technical support, including CY8C4148LDES543XQLA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4148LDES543XQLA1 requirements.

6.How does Aetrix verify that CY8C4148LDES543XQLA1 is sourced from the original manufacturer or authorized distributors?

All CY8C4148LDES543XQLA1 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 CY8C4148LDES543XQLA1 meets industry standards.

7.What is the process for return or replacement of CY8C4148LDES543XQLA1?

All CY8C4148LDES543XQLA1 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4148LDES543XQLA1, 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 CY8C4148LDES543XQLA1 part is unused and in its original packaging.

Return procedure for CY8C4148LDES543XQLA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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