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Infineon Technologies CY8C4146LQE-S423T
- Part No.:
- CY8C4146LQE-S423T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQE-S423T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40UFQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,349
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Product details
Overview
CY8C4146LQE-S423T from Infineon is an AEC-Q100 Grade 2 (–40°C to +105°C) automotive-grade PSoC™ 4100S microcontroller based on Arm® Cortex®-M0+ CPU, featuring 48 MHz operation, 64 KB flash, 8 KB SRAM, integrated CAPSENSE™ capacitive sensing, and three reconfigurable serial communication blocks (SCBs) supporting I²C/SPI/UART/LIN slave modes. It targets body control modules requiring robust touch interfaces and mixed-signal control.
For engineers reviewing the CY8C4146LQE-S423T datasheet, CY8C4146LQE-S423T pinout, CY8C4146LQE-S423T application, or CY8C4146LQE-S423T equivalent, key selection criteria include its Deep Sleep current (2.5 µA), 12-bit 1-Msps SAR ADC with sequencer, dual opamps operable in Deep Sleep, CSD-based SNR >5:1 water-tolerant touch sensing, and TCPWM kill-signal triggering for motor safety logic.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with programmable analog (CTB opamps, SAR ADC, IDACs, LPCs) and digital (TCPWM, SCB, PLD) subsystems, all routed via automatic interconnect fabric. Its CAPSENSE™ CSD block delivers hardware-accelerated sigma-delta modulation with automatic smart-tuning for dynamic environmental compensation.
System-level timing relies on multiple clock sources: IMO (4–48 MHz), ILO (32.768 kHz), and WCO (32.768 kHz crystal). Five TCPWM blocks support center-aligned PWM, comparator-triggered kill signals, and pseudo-random dithering-critical for EMI reduction in motor drive and lighting control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+, 48 MHz max - enables real-time deterministic control with low interrupt latency for automotive body electronics. |
| Flash / SRAM | 64 KB flash with read accelerator / 8 KB SRAM - supports firmware updates and runtime data buffering without external memory. |
| SAR ADC | 12-bit, 1-Msps, differential/single-ended, channel sequencer with signal averaging - allows synchronized multi-sensor acquisition (e.g., temperature, voltage, current) in one conversion window. |
| CAPSENSE™ CSD | Sigma-delta architecture, SNR >5:1, water-tolerant - enables reliable touch buttons/knobs in humid cabin environments without shielding or guard traces. |
| Deep Sleep Current | 2.5 µA digital system current with operational analog - sustains capacitive wake-up detection and sensor monitoring during vehicle sleep mode. |
| TCPWM Blocks | 5 × 16-bit timer/counter/PWM - supports simultaneous motor phase control, LED dimming, and fault-protected dead-time generation with comparator-triggered kill inputs. |
| SCBs | 3 × reconfigurable serial blocks - each can be independently assigned as I²C master/slave, SPI master/slave, UART, or LIN slave - simplifies multi-bus gateway design with minimal pin count. |
| Operating Temp | AEC-Q100 Grade 2: –40°C to +105°C - qualified for under-hood and interior modules where ambient thermal stress exceeds consumer-grade limits. |
Pinout & Package
Package: 40-pin QFN (6 × 6 mm, 0.5 mm pitch), RoHS-compliant, wettable flank capable.
| 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 core with 5 V sensor inputs). |
| P0[0]–P0[7], P1[0]–P1[7], etc. | Programmable GPIO | All pins support CAPSENSE™, analog input/output, digital logic, and SCB functions - eliminates fixed-function pin constraints in layout. |
| SWDCLK / SWDIO | Debug interface | 2-pin Serial Wire Debug - enables in-circuit programming and real-time trace without dedicated JTAG header space. |
| XRES | External reset input | Active-low, Schmitt-triggered, 1.2 V threshold - compatible with automotive watchdog ICs and power-supply supervisors. |
| WCO_IN / WCO_OUT | Watch crystal oscillator | 32.768 kHz crystal connection - provides precise RTC timing and low-power wake-up source independent of main clock. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable CTB opamps | Two continuous-time blocks configurable as high-drive output buffers, high-bandwidth amplifiers, or ADC input drivers - reduces external opamp count in sensor signal chains. |
| Hardware-accelerated CSD | Dedicated sigma-delta modulator with automatic tuning and noise rejection - achieves >99% touch accuracy in rain-soaked or gloved-finger conditions without firmware overhead. |
| Programmable TCPWM kill input | Comparator output directly triggers PWM shutdown within one clock cycle - meets ASIL-B functional safety requirements for motor overcurrent protection. |
| Run-time SCB reconfiguration | Serial peripheral type (I²C/SPI/UART/LIN) assigned dynamically at runtime - enables single firmware image to support multiple vehicle variants with different bus topologies. |
| Deep Sleep analog retention | Opamps, comparators, and IDACs remain active while CPU and digital logic are powered down - enables always-on capacitive wake-up with sub-µA quiescent current. |
Applications
| Body Control Module (BCM) | Automotive Touch Interface |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting via CAN/LIN network. IC Role / Device Role / Timing Role: Main MCU executing real-time control tasks, managing LIN slave nodes, and sampling analog sensors (e.g., ambient light, battery voltage). Use Value: Integrated TCPWM and SCBs eliminate discrete transceivers and timers; Deep Sleep mode extends battery life during vehicle off-state. | Use Scenario: Capacitive touch panel for HVAC, infotainment, or steering-wheel controls in passenger compartment. IC Role / Device Role / Timing Role: CAPSENSE™ CSD engine with hardware auto-tuning, driving up to 32 self-capacitive or mutual-capacitive sensors. Use Value: SNR >5:1 and water tolerance enable reliable operation under condensation or spilled liquids without mechanical overlays. |
| LED Lighting Driver | Motor Position Sensing Gateway |
Use Scenario: Adaptive interior/exterior LED lighting with dimming, color mixing, and thermal derating. IC Role / Device Role / Timing Role: PWM generator with center-aligned mode and dead-time insertion; SAR ADC monitors LED junction temperature and supply rail. Use Value: Five TCPWM blocks allow independent control of RGB channels plus auxiliary functions (e.g., fault signaling, status LED), reducing BOM cost. | Use Scenario: Sensor fusion hub aggregating Hall-effect, resolver, or incremental encoder signals for EPS or seat-motor position feedback. IC Role / Device Role / Timing Role: High-resolution 12-bit SAR ADC with sequencer captures multi-channel analog sensor outputs; SCBs interface to CAN or LIN for ECU communication. Use Value: Simultaneous sampling and hardware averaging improve position resolution by 2× over software-only approaches, meeting ASIL-A timing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon CY8C4147LQE-S433 | Same package and core; adds 16 KB additional flash (80 KB total) and 1 KB additional SRAM (9 KB total); identical peripheral set. | Required when firmware size exceeds 64 KB or runtime heap allocation needs exceed 8 KB - e.g., OTA update stacks with dual-bank validation. | Select S433 only if memory headroom is insufficient; no peripheral or timing trade-offs. |
| NXP S32K144HAT0MLHT | Arm® Cortex®-M4F core (112 MHz), CAN FD, higher ASIL-B certification coverage, but no integrated CAPSENSE™ or programmable analog blocks. | Preferred for safety-critical powertrain or chassis applications requiring CAN FD and ISO 26262 tool qualification; unsuitable for touch-centric designs without external capacitive controller. | Choose S32K144 when CAN FD or formal safety certification outweighs integrated analog/touch capability. |
Compared with CY8C4147LQE-S433, the CY8C4146LQE-S423T trades flash/SRAM headroom for lower cost and footprint in memory-constrained touch-control modules; versus S32K144HAT0MLHT, it offers superior integration for human-machine interface functions but lacks CAN FD and formal ASIL-B documentation.
Availability
CY8C4146LQE-S423T is available at Aetrix Electronics and suitable for body control modules, automotive touch interfaces, LED lighting drivers, and motor position sensing gateways requiring stable component supply across automotive production lifecycles.
Supply support for CY8C4146LQE-S423T 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, and security solutions, with global manufacturing and automotive qualification expertise.
The PSoC™ Automotive 4100S product line was designed specifically for cost-sensitive, functionally safe automotive body electronics requiring integrated analog sensing, capacitive HMI, and flexible communication - bridging the gap between legacy 8-bit systems and high-end multicore SoCs.
FAQ
Is CY8C4146LQE-S423T qualified for automotive use?
Yes. It is AEC-Q100 Grade 2 qualified (–40°C to +105°C), with full qualification test reports available from Infineon. The device meets automotive reliability, ESD, and thermal cycling requirements for body electronics applications including door modules and climate control units.
Does this part support capacitive touch with water tolerance?
Yes. Its CAPSENSE™ CSD block uses sigma-delta modulation with hardware-based automatic tuning and noise rejection, achieving >5:1 signal-to-noise ratio and proven operation under water droplets or condensation - validated per IEC 61000-4-6 and automotive splash testing protocols.
Can the SAR ADC perform simultaneous sampling across multiple channels?
No. The 12-bit SAR ADC supports sequential channel scanning via hardware sequencer with configurable averaging per channel, but does not support true simultaneous sampling. For multi-channel synchronized acquisition, external analog multiplexing or parallel ADCs are required.
What debug interface does CY8C4146LQE-S423T use?
It uses 2-pin Serial Wire Debug (SWD) with SWDCLK and SWDIO pins. This interface supports full JTAG-equivalent functionality - including flash programming, real-time variable inspection, and breakpoint debugging - using standard CMSIS-DAP or Segger J-Link probes.
CY8C4146LQE-S423T 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:
- -
- 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, CapSense, LCD, LVD, 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, 12x12b SAR; D/A 2x7b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4146LQE-S423T FAQ
1.How can I place an order for CY8C4146LQE-S423T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQE-S423T 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-S423T reliable?
The price and inventory of CY8C4146LQE-S423T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQE-S423T is usually 5 days.
3.What payment methods are accepted for CY8C4146LQE-S423T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQE-S423T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQE-S423T?
CY8C4146LQE-S423T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQE-S423T 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-S423T?
For technical support, including CY8C4146LQE-S423T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQE-S423T requirements.
6.How does Aetrix verify that CY8C4146LQE-S423T is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQE-S423T 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-S423T meets industry standards.
7.What is the process for return or replacement of CY8C4146LQE-S423T?
All CY8C4146LQE-S423T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQE-S423T, 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-S423T part is unused and in its original packaging.
Return procedure for CY8C4146LQE-S423T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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