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Infineon Technologies CY8C4244LQI-443
- Part No.:
- CY8C4244LQI-443
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 40-UFQFN Exposed Pad
- Datasheet:
-
CY8C4244LQI-443.pdf
- Description:
- IC MCU 32BIT 16KB FLASH 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:190
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Product details
Overview
CY8C4244LQI-443 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M0 programmable system-on-chip (PSoC® 4200 family) featuring 32 kB flash, 4 kB SRAM, 12-bit 1-Msps SAR ADC, two opamps with comparator mode, and four UDB-based programmable digital blocks. It integrates capacitive sensing (CapSense® CSD), LCD drive, and dual reconfigurable SCBs supporting I²C/SPI/UART in a 44-pin TQFP package for embedded control applications requiring mixed-signal flexibility.
For engineers reviewing the CY8C4244LQI-443 datasheet, CY8C4244LQI-443 pinout, CY8C4244LQI-443 application, or CY8C4244LQI-443 equivalent, key selection criteria include its 48-MHz CPU clock, Deep Sleep current of 20 nA, CapSense SNR >5:1, TCPWM kill-signal triggering capability, and support for SmartSense™ automatic tuning in touch interface designs.
Technical Context
The device implements a single-layer AHB-Lite interconnect between the Cortex-M0 core, memory subsystem (flash accelerator + SRAM), and peripheral domains. Its analog subsystem includes a CTBm block with two configurable opamps, a SAR ADC with channel sequencer and signal averaging, and two IDACs usable for capacitive sensing on any GPIO.
Digital programmability is delivered via four Universal Digital Blocks (UDBs), each containing eight macrocells and a data path, enabling custom logic, state machines, or peripheral extensions without external components. All peripherals-including two SCBs, four TCPWMs, and LCD drivers-are accessible through the IOSS and DSI interconnects with full routing flexibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M0, 48 MHz max - enables deterministic real-time control with Thumb-2 instruction compatibility and single-cycle 32-bit multiply. |
| Flash Memory | 32 kB with Read Accelerator - delivers 85% of SRAM access speed at 48 MHz, supports EEPROM emulation and flash protection (Open/Protected/Kill modes). |
| SAR ADC | 12-bit, 1-Msps, differential/single-ended - includes hardware channel sequencer and signal averaging for noise-resistant sensor acquisition. |
| CapSense | CapSense Sigma-Delta (CSD) with SmartSense™ - provides >5:1 SNR and water-tolerant touch sensing without manual tuning. |
| Power Modes | Stop (20 nA), Deep Sleep, Hibernate - retains SRAM and selected register states while disabling CPU and clocks to minimize active leakage. |
| GPIO Count | Up to 36 programmable pins - supports CapSense, LCD segment/common, analog input/output, and digital logic with configurable drive strength and slew rate. |
| SCBs | 2 × reconfigurable serial blocks - runtime switchable between I²C, SPI, or UART, enabling protocol flexibility without hardware redesign. |
Pinout & Package
Package: 44-pin TQFP (LQI), 10 mm × 10 mm, 0.8 mm pitch, RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core & I/O supply | Single 1.71–5.5 V rail powers both digital logic and analog blocks; internal regulators generate stable voltages for ADC and CapSense reference. |
| VSS | Ground reference | Dedicated analog/digital ground pins reduce coupling noise in mixed-signal operation; layout separation recommended per TRM. |
| P0[0]–P0[7] | Programmable GPIO | Port 0 pins support CapSense, analog input, LCD segment, or digital logic; all feature configurable drive modes including high-slew push-pull. |
| P1[0]–P1[7] | Programmable GPIO | Port 1 pins include dedicated SCB0/SCB1 signals (SCL/SDA, MOSI/MISO) and TCPWM outputs; support deep-sleep wakeup interrupts. |
| XRES | External reset input | Active-low asynchronous reset; internal pull-up ensures reliable startup when external reset circuitry is omitted. |
| SWDCK / SWDIO | Debug interface | 2-pin Serial Wire Debug (SWD) interface enables full on-chip debugging and flash programming; debug can be disabled permanently for security. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Subsystem | Two opamps with selectable gain, comparator mode, and ADC input buffering - eliminates need for external signal conditioning in sensor front-ends. |
| Capacitive Sensing Engine | Hardware-accelerated CSD with SmartSense™ auto-tuning - reduces firmware development time and improves robustness against environmental drift. |
| Universal Digital Blocks (UDBs) | Four independent UDBs, each with 8 macrocells and data path - enables implementation of custom peripherals (e.g., encoder interfaces, PWM generators) without consuming CPU cycles. |
| Low-Power Operation | 20-nA Stop mode with GPIO wake-up - extends battery life in portable and energy-harvesting systems where periodic sensing is required. |
| Security Configuration | Flash Kill mode and row-level read/write protection - prevents unauthorized firmware extraction or modification in production devices. |
Applications
| Industrial HMI Panels | Smart Home Touch Controls |
|---|---|
Use Scenario: Embedded control panel with multi-button touch interface, LED status indicators, and RS-485 communication to PLC. IC Role / Device Role / Timing Role: Central MCU executing CapSense scanning, driving 4-segment LCD display, managing TCPWM-controlled LED dimming, and handling Modbus RTU over SCB1 UART. Use Value: Single-chip integration eliminates discrete opamps, level shifters, and touch controller ICs; Deep Sleep mode reduces standby power to <1 µA during idle periods. | Use Scenario: Battery-powered wall-mounted thermostat with proximity wake, temperature/humidity sensing, and BLE gateway interface. IC Role / Device Role / Timing Role: System controller performing CapSense proximity detection, SAR ADC sampling of analog sensor outputs, and SCB0 I²C communication with environmental sensor ICs. Use Value: SmartSense™ eliminates calibration overhead across temperature ranges; 20-nA Stop mode enables >2-year battery life with monthly BLE sync bursts. |
| Medical Patient Monitors | Automotive Cabin Controls |
Use Scenario: Portable pulse oximeter with optical sensor interface, OLED display driver, and USB-CDC communication. IC Role / Device Role / Timing Role: Signal processor acquiring synchronized red/IR photodiode signals via SAR ADC, applying digital filtering in UDBs, and driving OLED via GPIO bit-banging or LCD peripheral. Use Value: Programmable analog blocks condition low-level photodiode currents; CapSense enables glove-compatible touch buttons compliant with IEC 60601-1 creepage requirements. | Use Scenario: Dashboard climate control module with rotary encoder emulation, backlight PWM, and LIN bus communication. IC Role / Device Role / Timing Role: Real-time controller reading CapSense-based rotary slider, generating center-aligned PWM for LED backlight dimming, and implementing LIN 2.2 slave protocol via SCB0 UART with hardware sync. Use Value: TCPWM kill-signal capability ensures immediate PWM shutdown during fault conditions; extended industrial temp range (–40 °C to +105 °C) meets automotive cabin requirements. |
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 |
|---|---|---|---|
| CY8C4245LTI-483 | Same PSoC 4200 architecture, 48-pin TQFP, 32 kB flash, but includes integrated I²C bootloader and higher drive-strength GPIOs. | Preferred for designs requiring factory-programmed firmware delivery via I²C or higher-current LED/LCD drive without external buffers. | Select when board layout allows larger 48-pin footprint and I²C-based field updates are required. |
| STM32F072RBT6 | Arm Cortex-M0, 128 kB flash, 16 kB SRAM, no programmable analog/digital blocks; relies on fixed-function peripherals only. | Suitable for cost-sensitive applications with static peripheral requirements and no need for CapSense or analog reconfiguration. | Choose when design stability is prioritized over field-tunability and external analog components are acceptable. |
Compared with CY8C4244LQI-443, the CY8C4245LTI-483 offers expanded I/O count and factory bootloader support but requires PCB redesign, while the STM32F072RBT6 trades programmable flexibility for higher memory and lower unit cost in fixed-architecture systems.
Availability
CY8C4244LQI-443 is available at Aetrix Electronics and suitable for industrial HMI panels, smart home touch controls, medical patient monitors, and automotive cabin controls requiring stable component supply, long-term lifecycle support, and qualified automotive-grade temperature operation.
Supply support for CY8C4244LQI-443 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 global semiconductor leader headquartered in Munich, Germany, delivering power systems, microcontrollers, sensors, and security solutions for industrial, automotive, and IoT applications.
CY8C4244LQI-443 belongs to the PSoC® 4200 product line, designed specifically for embedded systems requiring field-reconfigurable analog and digital logic alongside Arm-based firmware execution in space-constrained, low-power environments.
FAQ
What debug interface does CY8C4244LQI-443 support?
CY8C4244LQI-443 uses a 2-pin Serial Wire Debug (SWD) interface compatible with Arm CoreSight standards. It supports full on-chip debugging, flash programming, and real-time trace without external pods. Debug features can be permanently disabled via Flash Kill mode to prevent reverse engineering.
Does CY8C4244LQI-443 support capacitive sensing in wet environments?
Yes - its CapSense Sigma-Delta (CSD) engine achieves >5:1 signal-to-noise ratio and includes hardware-based water tolerance algorithms. Combined with SmartSense™ auto-tuning, it maintains reliable touch detection under condensation or light splashing without firmware recalibration.
Can the SAR ADC operate during Deep Sleep mode?
No - the SAR ADC requires active clocks and cannot sample in Deep Sleep. However, the low-power comparators and CapSense CSD block remain functional in Deep Sleep and can trigger wakeup events. ADC conversion must occur in Active or Sleep mode after wakeup.
Is there hardware support for motor control PWM kill signals?
Yes - the four TCPWM blocks support comparator-based kill inputs that force immediate PWM output disable with sub-microsecond response. This hardware safety feature is used in BLDC and stepper motor drives to meet IEC 61800-5-2 functional safety requirements without software intervention.
CY8C4244LQI-443 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 40-UFQFN Exposed Pad
- Series:
- PSOC™ 4 CY8C42xx
- 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, 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:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 8x12b SAR; D/A 2xIDAC
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C4244LQI-443 FAQ
1.How can I place an order for CY8C4244LQI-443 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C4244LQI-443 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 CY8C4244LQI-443 reliable?
The price and inventory of CY8C4244LQI-443 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4244LQI-443 is usually 5 days.
3.What payment methods are accepted for CY8C4244LQI-443?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4244LQI-443 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C4244LQI-443?
CY8C4244LQI-443 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C4244LQI-443 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 CY8C4244LQI-443?
For technical support, including CY8C4244LQI-443 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4244LQI-443 requirements.
6.How does Aetrix verify that CY8C4244LQI-443 is sourced from the original manufacturer or authorized distributors?
All CY8C4244LQI-443 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 CY8C4244LQI-443 meets industry standards.
7.What is the process for return or replacement of CY8C4244LQI-443?
All CY8C4244LQI-443 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4244LQI-443, 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 CY8C4244LQI-443 part is unused and in its original packaging.
Return procedure for CY8C4244LQI-443:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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