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Infineon Technologies CY8C4146LQI-S422T
- Part No.:
- CY8C4146LQI-S422T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY8C4146LQI-S422T.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,165
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Product details
Overview
CY8C4146LQI-S422T 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-S422T datasheet, CY8C4146LQI-S422T pinout, CY8C4146LQI-S422T application, or CY8C4146LQI-S422T equivalent, key selection criteria include its reconfigurable analog/digital blocks, SmartSense auto-tuning for CAPSENSE™, TCPWM kill-signal triggering for motor safety, and 1.71–5.5 V wide-voltage operation across battery-powered and industrial supply rails.
Technical Context
The device integrates a fixed-function Arm® Cortex®-M0+ core with programmable analog (two opamps, two low-power comparators, 12-bit SAR ADC) and digital (five TCPWM blocks, three SCBs, programmable logic) subsystems. All analog peripherals remain functional in Deep Sleep mode, enabling always-on touch detection with sub-3 µA system current.
Its clock architecture includes ±2% IMO, 32 kHz ILO, and WCO support - enabling precise timing for UART communication, PWM motor control, and CAPSENSE™ sigma-delta conversion. The Smart I/O block allows autonomous GPIO-level signal conditioning without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M0+ @ 48 MHz - single-cycle multiply enables real-time control loop execution in motor and sensor applications. |
| Memory | 64 KB flash + 8 KB SRAM - sufficient for embedded firmware with CAPSENSE™ middleware and communication stacks. |
| ADC | 12-bit SAR, 1 Msps, differential/single-ended - supports high-resolution current/voltage monitoring with hardware channel sequencing. |
| CAPSENSE™ | Sigma-delta CSD with >5:1 SNR and SmartSense auto-tuning - eliminates manual calibration for production touch systems exposed to moisture. |
| Power Range | 1.71–5.5 V - enables direct interface with Li-ion batteries (3.0–4.2 V), USB-powered circuits (5 V), and industrial 3.3 V/2.5 V rails. |
| Deep Sleep Current | 2.5 µA with active analog - sustains capacitive wake-up and RTC operation for multi-year battery life in IoT endpoints. |
| TCPWM Blocks | Five 16-bit Timer/Counter/PWM units with center-aligned, edge-aligned, and pseudo-random modes - supports BLDC commutation and LED dimming with comparator-triggered fault shutdown. |
| SCBs | Three serial communication blocks - each configurable as I²C master/slave, SPI master/slave, or UART - enables concurrent sensor bus, display interface, and debug port. |
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 | Main power supply input | Accepts 1.71–5.5 V; powers digital core, analog blocks, and I/O; requires local 100 nF decoupling. |
| VSS | Digital ground reference | Primary return path for CPU, memory, and digital peripherals; must be connected to system GND plane. |
| XRES | Active-low reset input | Asynchronous external reset; internal pull-up ensures reliable boot without external resistor. |
| P0[0]–P0[7] | Programmable GPIO bank 0 | Support CAPSENSE™, analog input/output, or digital functions; slew rate and drive strength configurable per pin. |
| P1[0]–P1[7] | Programmable GPIO bank 1 | Includes dedicated SCB0 SDA/SCL pins; supports I²C fast-mode (400 kHz) with internal pull-ups enabled. |
| SWDCLK / SWDIO | ARM Serial Wire Debug interface | Two-pin debug interface for programming and real-time trace; no external pull-ups required. |
| WCO_IN / WCO_OUT | 32.768 kHz crystal oscillator terminals | Supports precision RTC and low-power wake-up timing; requires 12.5 pF load capacitance crystal. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable Analog Blocks | Two opamps operate in comparator, buffer, or high-drive mode - enables flexible sensor signal conditioning without external components. |
| SmartSense Auto-Tuning | Hardware-accelerated CAPSENSE™ calibration - reduces BOM cost and production test time by eliminating manual tuning fixtures. |
| Programmable Digital Logic | Boolean logic on GPIO inputs/outputs via Smart I/O - implements debounce, edge detection, or state machines without CPU overhead. |
| Low-Power Comparators | Operate in Deep Sleep at <100 nA - enables wake-on-threshold detection for battery-powered sensors and alarms. |
| LCD Segment Drive | Up to 32 segments driven directly from GPIOs - eliminates external LCD driver IC in simple display applications like thermostats and meters. |
Applications
| Industrial HMI Panels | Consumer Appliance Controls |
|---|---|
Use Scenario: Touch-enabled operator interface on PLC-mounted control boxes exposed to condensation and cleaning agents. IC Role / Device Role / Timing Role: CAPSENSE™ controller with water-tolerant sigma-delta sensing and real-time motor status feedback via TCPWM fault signaling. Use Value: Maintains >99.5% touch accuracy under 50% RH to 95% RH humidity and withstands IPX4 spray testing without shielding. |
Use Scenario: Wash-cycle selector and temperature display on front-load washing machines. IC Role / Device Role / Timing Role: MCU + CAPSENSE™ + LCD driver - manages user input, displays cycle progress, and monitors motor current via SAR ADC. Use Value: Single-chip integration reduces PCB area by 35% vs. discrete MCU + touch controller + LCD driver solution. |
| Medical Patient Monitors | Smart Home Thermostats |
Use Scenario: Non-invasive touch interface on bedside vital-signs displays requiring ESD immunity and low-power standby. IC Role / Device Role / Timing Role: Low-noise analog front-end for biopotential signal acquisition and capacitive button interface with IEC 61000-4-2 Level 4 compliance. Use Value: Achieves 85 dB SNR on ECG leads while maintaining 2.5 µA deep-sleep current for >5-year coin-cell operation. |
Use Scenario: Wall-mounted HVAC controller with ambient light-adaptive display and occupancy-based scheduling. IC Role / Device Role / Timing Role: Environmental sensor hub (temp/humidity), touch UI, and Zigbee/Thread co-processor interface via UART. Use Value: Integrated SAR ADC and IDACs enable direct thermistor and capacitive humidity sensing - no external signal chain needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C4147AZI-S423 | Same PSoC™ 4100S family; 48-pin QFN package, higher flash (128 KB), same 48 MHz M0+, but lacks WCO pins. | Preferred for space-constrained designs needing larger code footprint and no RTC requirement. | Select when board layout favors QFN and RTC functionality is handled externally or omitted. |
| STM32G071KBT6 | Arm® Cortex®-M0+, 64 MHz, 128 KB flash, 36 KB SRAM; no integrated CAPSENSE™ or programmable analog blocks. | Requires external touch controller and opamp circuitry for equivalent analog functionality. | Choose when leveraging ST's ecosystem, needing higher CPU speed, and accepting added BOM complexity for touch/analog. |
Compared with CY8C4146LQI-S422T, the CY8C4147AZI-S423 offers more flash in smaller QFN packaging but sacrifices WCO-based RTC capability, while the STM32G071KBT6 provides higher clock speed and memory but demands external components to match PSoC™'s integrated analog/digital reconfigurability.
Availability
CY8C4146LQI-S422T is available at Aetrix Electronics and suitable for industrial HMI, medical patient interfaces, smart home thermostats, and appliance control panels requiring stable component supply across multi-year production cycles.
Supply support for CY8C4146LQI-S422T 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 manufacturer specializing in power management, automotive MCUs, and secure connectivity solutions.
CY8C4146LQI-S422T belongs to the PSoC™ 4100S product line - designed specifically for cost-sensitive, low-power embedded systems requiring integrated capacitive sensing, reconfigurable analog, and robust industrial-grade operation.
FAQ
Does CY8C4146LQI-S422T support USB communication?
No, CY8C4146LQI-S422T does not include a USB PHY or USB controller. It supports UART, I²C, and SPI through its three reconfigurable serial communication blocks (SCBs), but USB functionality requires an external bridge IC or host-side adapter.
Can the SAR ADC perform simultaneous sampling on multiple channels?
No, the 12-bit SAR ADC has a single sample-and-hold circuit and performs sequential conversions. However, its hardware channel sequencer supports automatic scanning of up to 16 channels with signal averaging per channel - enabling effective multi-sensor monitoring without CPU polling.
What is the maximum operating temperature for CY8C4146LQI-S422T?
CY8C4146LQI-S422T is rated for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 5.2.1 of the official datasheet (002-00122 Rev. *Q), with validated performance across this range for both digital and analog peripherals.
Is ModusToolbox™ required for development, or can PSoC™ Creator still be used?
Both tools are supported: PSoC™ Creator remains fully functional for legacy projects and schematic-based design, while ModusToolbox™ is Infineon's current-generation IDE offering CLI-driven workflows, CMSIS-Pack integration, and enhanced middleware support including CAPSENSE™ Tuner v3.x.
CY8C4146LQI-S422T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 32-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:
- 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-S422T FAQ
1.How can I place an order for CY8C4146LQI-S422T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4146LQI-S422T 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-S422T reliable?
The price and inventory of CY8C4146LQI-S422T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4146LQI-S422T is usually 5 days.
3.What payment methods are accepted for CY8C4146LQI-S422T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4146LQI-S422T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4146LQI-S422T?
CY8C4146LQI-S422T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4146LQI-S422T 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-S422T?
For technical support, including CY8C4146LQI-S422T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4146LQI-S422T requirements.
6.How does Aetrix verify that CY8C4146LQI-S422T is sourced from the original manufacturer or authorized distributors?
All CY8C4146LQI-S422T 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-S422T meets industry standards.
7.What is the process for return or replacement of CY8C4146LQI-S422T?
All CY8C4146LQI-S422T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4146LQI-S422T, 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-S422T part is unused and in its original packaging.
Return procedure for CY8C4146LQI-S422T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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