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Infineon Technologies CY8C4146LQI-S423T
- Part No.:
- CY8C4146LQI-S423T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQI-S423T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,331
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Product details
Overview
CY8C4146LQI-S423T from Infineon is a programmable 32-bit Arm® Cortex®-M0+ microcontroller with 48 MHz CPU, 64 KB flash, 8 KB SRAM, integrated CAPSENSE™ capacitive sensing, and reconfigurable analog/digital blocks. It supports 1.71–5.5 V operation, deep-sleep mode at 2.5 µA, and drives up to 36 GPIOs for touch interfaces, motor control, and sensor fusion in industrial HMI and consumer electronics.
For engineers reviewing the CY8C4146LQI-S423T datasheet, CY8C4146LQI-S423T pinout, CY8C4146LQI-S423T application, or CY8C4146LQI-S423T equivalent, this device is selected for embedded systems requiring mixed-signal flexibility, low-power capacitive touch, and runtime-reconfigurable serial communication (I²C/SPI/UART) across SCB peripherals.
Technical Context
The CY8C4146LQI-S423T integrates a single-core Arm Cortex-M0+ CPU with tightly coupled flash and SRAM, enabling deterministic real-time execution. Its analog subsystem includes two continuous-time opamps (CTB), a 12-bit 1-Msps SAR ADC with sequencer and averaging, two low-power comparators active in Deep Sleep, and dual IDACs supporting both general-purpose and CSD applications.
Digital resources include five TCPWM blocks supporting center-aligned PWM and quadrature decoding, three reconfigurable Serial Communication Blocks (SCBs), programmable logic (PLD-style digital routing), and Smart I/O for pre-processing signals without CPU intervention - all coordinated via a unified clock tree with IMO, ILO, and WCO sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0+, 48 MHz max - enables real-time firmware execution with single-cycle multiply for efficient math-intensive tasks like sensor filtering. |
| Memory | 64 KB flash + 8 KB SRAM - sufficient for complex CAPSENSE™ tuning algorithms, BLE stack coexistence, and multi-peripheral firmware without external memory. |
| Analog Performance | 12-bit SAR ADC @ 1 Msps with differential input & channel sequencer - supports simultaneous sampling of multiple sensors (e.g., temp, voltage, current) with hardware averaging for noise reduction. |
| Capacitive Sensing | CAPSENSE™ sigma-delta engine with >5:1 SNR and water-tolerant operation - delivers robust touch button/slider detection under wet conditions without firmware compensation. |
| Low-Power Operation | Deep Sleep current = 2.5 µA with opamps/comparators active - allows battery-powered devices (e.g., remote controls, wearables) to maintain touch wake-up capability for months. |
| GPIO Flexibility | 36 programmable pins with configurable drive strength, slew rate, and analog/digital/CAPSENSE™ assignment - eliminates board redesign when repurposing pins across prototyping iterations. |
| Serial Interfaces | 3 × SCBs supporting I²C/SPI/UART concurrently - enables simultaneous communication with display (I²C), sensor hub (SPI), and debug console (UART) without resource contention. |
Pinout & Package
Package: 44-lead TQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | 1.71–5.5 V input; powers digital logic, analog blocks, and GPIOs - supports direct connection to Li-ion battery or regulated 3.3 V rail. |
| VSS | Digital ground | Primary return path for digital circuitry; must be connected to system GND plane with low-inductance trace. |
| XRES | Active-low reset input | External reset assertion overrides internal POR; debounced externally to prevent spurious resets during power ramp. |
| SWDCLK / SWDIO | Debug interface | Two-pin ARM Serial Wire Debug port - enables full JTAG-like debugging, flash programming, and real-time variable inspection without dedicated debug header. |
| P0[0]–P0[7] | General-purpose I/O | Support CAPSENSE™, analog input, or digital function; configurable pull-up/down and drive strength - used for touch buttons or ADC inputs in reference designs. |
| P1[0]–P1[7] | General-purpose I/O | Same flexibility as P0; P1[4]/P1[5] default to SCB0 I²C SCL/SDA - simplifies connection to I²C peripherals without pin remapping. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense™ auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual firmware tuning - reduces development time by >70% for touch UI validation. |
| Reconfigurable SCBs | Each SCB dynamically switches between I²C/SPI/UART modes at runtime - enables firmware-driven protocol adaptation (e.g., SPI-to-UART bridge on demand). |
| Deep Sleep analog retention | Opamps and comparators remain operational with 2.5 µA system current - allows wake-on-touch or wake-on-threshold events without full MCU boot. |
| Programmable CTB opamps | Configurable as buffer, comparator, or transimpedance amplifier with internal/external drive options - supports current-mode sensor interfacing (e.g., photodiode) without external components. |
| TCPWM kill-input support | Hardware-triggered PWM shutdown via comparator output - provides <100 ns fault response for motor control safety-critical paths. |
Applications
| Industrial HMI Panels | Smart Home Appliances |
|---|---|
|
Use Scenario: Touch-enabled control panel for HVAC or PLC interface with waterproof overlay. IC Role / Device Role / Timing Role: Primary MCU handling CAPSENSE™ scanning, LCD segment driving, and RS-485 communication via SCB. Use Value: Sigma-delta CAPSENSE™ maintains >95% touch accuracy under condensation, while Deep Sleep extends battery life in wireless variants. |
Use Scenario: Microwave oven control with rotary encoder emulation and child-lock detection. IC Role / Device Role / Timing Role: Touch controller and system manager executing CAPSENSE™ gesture recognition and PWM fan control via TCPWM. Use Value: Quadrature decoder + TCPWM center-aligned mode enables precise speed regulation and smooth knob rotation feedback. |
| Wearable Fitness Trackers | Medical Patient Monitors |
|
Use Scenario: Compact wrist-worn device with capacitive touch bezel and optical heart-rate sensor interface. IC Role / Device Role / Timing Role: Sensor hub aggregating ADC data from photodiodes and managing ultra-low-power sleep/wake cycles. Use Value: Dual IDACs drive LED current precisely; 2.5 µA Deep Sleep enables 6-month battery life with daily touch interaction. |
Use Scenario: Portable ECG monitor with dry-electrode touch detection and analog front-end signal conditioning. IC Role / Device Role / Timing Role: Analog signal processor using CTB opamps for instrumentation amplification and SAR ADC for digitization. Use Value: Reconfigurable opamp modes allow single-pin reuse for electrode biasing and signal buffering - reducing BOM count by 2 analog ICs. |
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 |
|---|---|---|---|
| CY8C4147AZI-S423 | Same PSoC™ 4100S architecture but in 48LD TQFP; adds USBFS block and 128 KB flash. | Required for USB-connected devices (e.g., HID keyboards); not pin-compatible due to extra USB pins and larger package. | Select when USB device-class connectivity or extended flash for OTA updates is mandatory. |
| STM32G071KBT6 | Arm Cortex-M0+, 64 MHz, 128 KB flash, 36 KB SRAM; no integrated CAPSENSE™ or programmable analog blocks. | Relies on external touch controller and opamp ICs; higher BOM cost and PCB area for equivalent touch + analog functionality. | Select when pure digital control dominates and touch is handled separately via dedicated IC or external controller. |
Compared with CY8C4146LQI-S423T, CY8C4147AZI-S423 offers USB and more memory but requires layout changes, while STM32G071KBT6 demands external analog components - making the CY8C4146LQI-S423T optimal for cost-sensitive, space-constrained touch-integrated designs.
Availability
CY8C4146LQI-S423T is available at Aetrix Electronics and suitable for industrial HMI panels, smart home appliances, and wearable fitness trackers requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade sourcing.
Supply support for CY8C4146LQI-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 is a German semiconductor leader specializing in power management, sensing, and microcontroller solutions for industrial, automotive, and IoT markets.
CY8C4146LQI-S423T belongs to the PSoC™ 4100S product line - designed specifically for cost-optimized, low-power embedded systems needing integrated capacitive touch, programmable analog, and flexible digital peripherals in a single chip.
FAQ
Does CY8C4146LQI-S423T support USB communication?
No. This variant lacks a USBFS block. USB functionality is available only in higher-pin-count members of the PSoC™ 4100S family, such as CY8C4147AZI-S423. The CY8C4146LQI-S423T relies on its three SCBs for I²C, SPI, or UART communication - sufficient for most touch-centric, non-USB applications.
What development tools are officially supported for this device?
Infineon officially supports ModusToolbox™ (v3.x+) and legacy PSoC™ Creator (v4.4). ModusToolbox™ provides CMSIS-Pack-based BSPs, CAPSENSE™ Tuner GUI, and middleware for Bluetooth LE integration. PSoC™ Creator offers schematic-based design entry and automatic analog/digital routing - both fully validated for CY8C4146LQI-S423T.
Can the SAR ADC perform simultaneous sampling across multiple channels?
No. The 12-bit SAR ADC uses a single conversion core with a hardware channel sequencer. It supports rapid sequential sampling (up to 1 Msps aggregate) and signal averaging per channel, but true simultaneous sampling requires external analog multiplexing or a separate multi-channel ADC.
Is the 44-lead TQFP package RoHS and REACH compliant?
Yes. The CY8C4146LQI-S423T is manufactured in compliance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Certificate of Compliance is available upon request from Infineon's official product page or authorized distributors like Digi-Key and Mouser.
CY8C4146LQI-S423T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100S
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, CapSense, LCD, 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 Slope, 16x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4146LQI-S423T FAQ
1.How can I place an order for CY8C4146LQI-S423T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQI-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 CY8C4146LQI-S423T reliable?
The price and inventory of CY8C4146LQI-S423T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQI-S423T is usually 5 days.
3.What payment methods are accepted for CY8C4146LQI-S423T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQI-S423T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQI-S423T?
CY8C4146LQI-S423T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQI-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 CY8C4146LQI-S423T?
For technical support, including CY8C4146LQI-S423T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQI-S423T requirements.
6.How does Aetrix verify that CY8C4146LQI-S423T is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQI-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 CY8C4146LQI-S423T meets industry standards.
7.What is the process for return or replacement of CY8C4146LQI-S423T?
All CY8C4146LQI-S423T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQI-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 CY8C4146LQI-S423T part is unused and in its original packaging.
Return procedure for CY8C4146LQI-S423T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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