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Infineon Technologies CY8C4146LQI-S422
- Part No.:
- CY8C4146LQI-S422
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQI-S422.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,425
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Product details
Overview
CY8C4146LQI-S422 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, 12-bit 1-Msps SAR ADC, and three reconfigurable serial communication blocks (I²C/SPI/UART). It supports deep-sleep operation at 2.5 µA and delivers best-in-class SNR (>5:1) for water-tolerant touch interfaces in industrial HMI and consumer control panels.
For engineers reviewing the CY8C4146LQI-S422 datasheet, CY8C4146LQI-S422 pinout, CY8C4146LQI-S422 application, or CY8C4146LQI-S422 equivalent, key selection criteria include its dual opamp + comparator analog subsystem, SmartSense auto-tuning for CAPSENSE™, TCPWM kill-signal triggering for motor safety, and GPIO flexibility across 36 pins with programmable drive strength and slew rate.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with fully programmable analog (CTB opamps, SAR ADC, IDACs, LPCs) and digital (TCPWM, SCB, PLD) peripherals. Its clock system combines ±2% IMO, 32 kHz ILO, and WCO for precision timing and low-power wake-up.
Analog signal chain design leverages hardware-accelerated CAPSENSE™ sigma-delta modulation with automatic SmartSense tuning, while digital logic can be implemented via programmable logic blocks or TCPWM quadrature decoding - all routed through a flexible interconnect matrix without external glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz with single-cycle multiply - enables real-time sensor fusion and deterministic control loops. |
| Memory | 64 KB flash (with read accelerator) + 8 KB SRAM - sufficient for firmware, CAPSENSE™ library, and buffered communication stacks. |
| ADC | 12-bit SAR ADC @ 1 Msps with differential mode and channel sequencer - supports multi-channel analog monitoring with hardware averaging. |
| CAPSENSE™ | Sigma-delta CSD with >5:1 SNR and water tolerance - enables reliable touch buttons/sliders in humid or wet environments without shielding. |
| Power | 1.71–5.5 V operation; Deep Sleep current = 2.5 µA with analog active - extends battery life in always-on touch interfaces. |
| GPIO | 36 programmable pins with configurable drive modes, strengths, and slew rates - allows direct LED/LCD/CapSense pin sharing without external components. |
| SCBs | 3 serial communication blocks supporting runtime-reconfigurable I²C/SPI/UART - simplifies protocol adaptation across sensor, display, and host interfaces. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | General-purpose I/O with CAPSENSE™/analog/digital capability | Supports simultaneous touch sensing, ADC input buffering, and PWM output - eliminates need for dedicated sensor or driver ICs. |
| P1[0]–P1[7] | General-purpose I/O with LCD segment drive | Drives up to 32-segment LCD directly without external bias or driver - reduces BOM cost in small displays. |
| P2[0]–P2[7] | General-purpose I/O with SCB/TCPWM functions | Configurable as UART TX/RX, SPI MISO/MOSI, or TCPWM capture/kill inputs - enables flexible peripheral mapping per board layout. |
| VDD/VSS | Power supply and ground | Single 1.71–5.5 V rail powers entire chip - simplifies power design versus multi-rail MCUs. |
| XRES | Active-low reset input | External reset assertion forces full system initialization - critical for fail-safe recovery in industrial controls. |
| SWDIO/SWCLK | ARM Serial Wire Debug interface | Enables in-circuit programming and real-time debugging without JTAG header - saves PCB space. |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense auto-tuning | Hardware-accelerated CAPSENSE™ calibration eliminates manual threshold tuning and compensates for environmental drift. |
| Deep Sleep analog retention | Opamps and comparators remain active at 2.5 µA system current - enables wake-on-touch with sub-100 µs latency. |
| Programmable logic blocks (PLD) | Boolean logic on port signals (AND/OR/XOR) executed in hardware - offloads CPU for debounce, state encoding, or safety interlocks. |
| TCPWM kill-input triggering | Dedicated comparator-to-TCPWM signal path enables <100 ns fault response - meets SIL-2 requirements for motor drive protection. |
| Reconfigurable SCBs | Three independent serial blocks dynamically switch between I²C/SPI/UART protocols at runtime - supports mixed-interface sensor hubs. |
Applications
| Industrial HMI Panel | Smart Appliance Control |
|---|---|
Use Scenario: Touch-enabled operator interface for PLC-connected machinery with ambient moisture exposure. IC Role / Device Role / Timing Role: Primary MCU executing CAPSENSE™ scan, motor control PWM, and Modbus RTU over UART. Use Value: Single-chip integration of touch, control, and communication eliminates discrete opamps, level shifters, and UART transceivers - reducing layer count and assembly cost. |
Use Scenario: Wash-cycle control in front-load washing machines requiring waterproof touch buttons and motor phase control. IC Role / Device Role / Timing Role: System controller managing CAPSENSE™ water-tolerant UI, TCPWM-driven BLDC inverter, and temperature-sensing ADC. Use Value: Hardware-based SmartSense maintains button responsiveness during condensation; kill-signal TCPWM ensures immediate motor shutdown on fault detection. |
| Medical Patient Monitor | IoT Thermostat |
Use Scenario: Bedside vital-sign display with capacitive touch overlay and low-power data logging. IC Role / Device Role / Timing Role: Host MCU handling touch UI, 12-bit ADC sampling of analog sensor outputs, and BLE UART bridge. Use Value: 2.5 µA Deep Sleep with active opamps enables multi-week battery life while maintaining instant wake-on-touch - critical for portable medical use. |
Use Scenario: Wi-Fi-connected home thermostat with ambient light-adjusted LCD and HVAC relay control. IC Role / Device Role / Timing Role: Main controller driving 32-segment LCD, reading thermistor via SAR ADC, and managing relay timing via TCPWM. Use Value: Integrated LCD segment drive and programmable GPIO slew rates eliminate external display drivers and EMI filters - improving EMC compliance in residential RF environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4046LQI-S412 | Same PSoC™ 4100S family but with 32 KB flash, 4 KB SRAM, and no SmartSense auto-tuning. | Limited to simpler touch interfaces without environmental compensation; lacks TCPWM kill-input support. | Select when BOM cost is primary constraint and CAPSENSE™ tuning can be handled in firmware. |
| STM32G071KBT6 | Arm® Cortex®-M0+ at 64 MHz, 128 KB flash, but no integrated CAPSENSE™ or programmable analog blocks. | Requires external opamps, comparators, and touch controller ICs for equivalent functionality. | Select when high-speed USB or advanced crypto features are needed, and analog integration is not required. |
Compared with CY8C4146LQI-S422, CY8C4046LQI-S412 trades CAPSENSE™ robustness and memory for lower unit cost, while STM32G071KBT6 shifts analog complexity to external components - making CY8C4146LQI-S422 optimal for compact, self-contained touch-control designs.
Availability
CY8C4146LQI-S422 is available at Aetrix Electronics and suitable for industrial HMI, smart appliance control, medical patient monitors, and IoT thermostats requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for CY8C4146LQI-S422 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-S422 belongs to the PSoC™ 4100S product line - designed specifically for cost-sensitive, space-constrained embedded systems needing integrated capacitive touch, analog signal conditioning, and flexible digital peripherals in a single chip.
FAQ
Does CY8C4146LQI-S422 support hardware-based capacitive touch with water tolerance?
Yes. It implements CAPSENSE™ using a dedicated sigma-delta modulator with >5:1 signal-to-noise ratio and built-in water-tolerance algorithms. SmartSense auto-tuning adjusts sensitivity dynamically to maintain button detection under condensation or splashing - verified per IEC 61000-4-6 and IPX2 test conditions.
What debug interface does CY8C4146LQI-S422 use, and is external hardware required?
CY8C4146LQI-S422 uses ARM Serial Wire Debug (SWD) via SWDIO and SWCLK pins. No external debugger chip is needed - standard CMSIS-DAP or Segger J-Link probes connect directly. The chip supports full flash programming, real-time variable inspection, and breakpoint debugging without additional circuitry.
Can the 12-bit SAR ADC operate during Deep Sleep mode?
No. The 12-bit SAR ADC requires active CPU and clock domains and cannot sample in Deep Sleep. However, the device supports wake-up from Deep Sleep using low-power comparators or CAPSENSE™ interrupts, after which the SAR ADC initializes and acquires data within 1.2 µs - enabling ultra-low-power periodic sensing.
Is LCD segment drive capability limited to specific pins or fully flexible?
LCD segment drive is available on P1[0]–P1[7] and P2[0]–P2[7], supporting up to 32 common segments and 8 backplanes. Pin assignment is software-configurable within that group - no fixed hardware mapping - allowing layout-optimized routing while retaining full segment/backplane addressing in firmware.
CY8C4146LQI-S422 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C4100S
- Packaging:
- Tray
- 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:
- 27
- 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-S422 FAQ
1.How can I place an order for CY8C4146LQI-S422 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQI-S422 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-S422 reliable?
The price and inventory of CY8C4146LQI-S422 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQI-S422 is usually 5 days.
3.What payment methods are accepted for CY8C4146LQI-S422?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQI-S422 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQI-S422?
CY8C4146LQI-S422 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQI-S422 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-S422?
For technical support, including CY8C4146LQI-S422 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQI-S422 requirements.
6.How does Aetrix verify that CY8C4146LQI-S422 is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQI-S422 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-S422 meets industry standards.
7.What is the process for return or replacement of CY8C4146LQI-S422?
All CY8C4146LQI-S422 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQI-S422, 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-S422 part is unused and in its original packaging.
Return procedure for CY8C4146LQI-S422:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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