Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Infineon Technologies CY8C4244FNI-443T

Name: CY8C4244FNI-443T
Brand: Infineon Technologies
SKU: CY8C4244FNI-443T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: CY8C4244FNI-443T

Manufacturer:: Infineon Technologies

Category:: Microcontrollers

Package:: 35-UFBGA, WLCSP

Datasheet:: CY8C4244FNI-443T.pdf

Description:: IC MCU 32BIT 16KB FLASH 35WLCSP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,440

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

CY8C4244FNI-443T 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 capacitive sensing (CapSense® CSD). It operates from 1.71 V to 5.5 V and supports –40 °C to +105 °C industrial temperature range. Used in embedded human-interface systems requiring mixed-signal reconfigurability and low-power operation.

For engineers reviewing the CY8C4244FNI-443T datasheet, CY8C4244FNI-443T pinout, CY8C4244FNI-443T application, or CY8C4244FNI-443T equivalent, key selection criteria include flash/SRAM size, CapSense SNR performance, TCPWM flexibility for motor control, SCB reconfigurability for I²C/SPI/UART, and Deep Sleep current (20 nA).

Technical Context

The device integrates a single-core Arm Cortex-M0 CPU running at up to 48 MHz with hardware multiply, tightly coupled flash (32 kB) and SRAM (4 kB), and a configurable analog subsystem including two opamps, a 12-bit SAR ADC with channel sequencer, and two IDACs. Its digital architecture includes four universal digital blocks (UDBs), four TCPWM modules, and two serial communication blocks (SCBs) supporting runtime reconfiguration between I²C, SPI, and UART protocols.

Power management supports five modes - Active, Sleep, Deep Sleep (20 nA), Hibernate, and Stop - with wakeup via GPIO or peripherals. The CapSense Sigma-Delta (CSD) engine delivers >5:1 SNR and water tolerance, enabled by SmartSense™ automatic hardware tuning and supported by dedicated DSI routing for capacitive sensor scanning.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M0, 48 MHz max, single-cycle 32-bit multiply - enables deterministic real-time control and binary upward compatibility with Cortex-M3/M4.
Flash Memory	32 kB with Read Accelerator - delivers ~85% of SRAM access speed at 48 MHz, supports EEPROM emulation and secure firmware updates.
SRAM	4 kB retained in Hibernate - preserves critical state during ultra-low-power suspend for battery-backed applications.
ADC	12-bit SAR, 1 Msps, differential/single-ended, channel sequencer with signal averaging - enables high-fidelity sensor acquisition with noise reduction in motion or environmental monitoring.
CapSense	CSD engine with >5:1 SNR and SmartSense™ auto-tuning - eliminates manual calibration effort and ensures robust touch response under moisture or EMI stress.
Low-Power Modes	20 nA Stop Mode with GPIO wakeup - extends battery life in intermittently active IoT endpoints without external wake circuitry.
SCBs	2 × reconfigurable serial blocks - each supports I²C, SPI, or UART at runtime, reducing BOM count and enabling flexible peripheral interfacing.

Pinout & Package

Package: 44-pin TQFP (FNI), 10 mm × 10 mm, 0.8 mm pitch, exposed thermal pad. Pinout validated per Infineon datasheet 001-87197 Rev. *L (Page 10–13).

Pin/Terminal	Circuit Role	Design Meaning
VDD	Main power supply input	Accepts 1.71–5.5 V; powers core, analog, and I/O domains; requires local decoupling per datasheet layout guidelines.
VSS	Ground reference	Common return path for all internal circuits; must be connected to low-impedance PCB ground plane.
XRES	External reset input	Active-low asynchronous reset; debounced internally; used for system-level fault recovery or power-on initialization.
SWDIO / SWCLK	Serial Wire Debug interface	2-pin debug port supporting full programming, breakpoint, and watchpoint debugging without JTAG overhead.
P0[0]–P0[7]	Programmable GPIO bank	Support CapSense, analog input/output, LCD segment/common, or digital logic; drive strength and slew rate configurable per pin.
SCB0_SDA / SCB0_SCL	I²C interface signals	Configurable as open-drain with internal pull-ups; support standard/fast-mode I²C up to 400 kHz for sensor or PMIC communication.

Key Features

Feature	Design Value
Programmable Analog Subsystem	Two opamps with selectable gain, comparator mode, and ADC input buffering - enables sensor signal conditioning, threshold detection, and precision measurement without external components.
Universal Digital Blocks (UDBs)	Four UDBs, each with 8 macrocells and data path - provide hardware-level custom logic (e.g., PWM generators, CRC engines, protocol encoders) independent of CPU load.
CapSense CSD Engine	Hardware-accelerated sigma-delta modulation with >5:1 SNR - achieves reliable touch detection on curved surfaces or behind thick overlays without firmware intervention.
TCPWM Blocks	Four 16-bit timer/counter/PWM modules with center-aligned, edge-aligned, and pseudo-random modes - support precise motor phase control and dead-time insertion for BLDC drivers.
Security Configuration	Flash protection modes: Open, Protected (debug disabled), Kill (irreversible erase lock) - enforces IP protection and prevents unauthorized firmware extraction or modification.

Applications

Industrial HMI Panels

Smart Home Touch Controls

Use Scenario: Wall-mounted thermostats and appliance control panels requiring waterproof, multi-touch gesture support under condensation or cleaning agents.

IC Role / Device Role / Timing Role: Primary MCU and capacitive sensing controller; manages CapSense scanning, LCD display, and HVAC communication via SCB-configured UART.

Use Value: SmartSense™ auto-tuning maintains consistent touch sensitivity across humidity shifts; Deep Sleep mode extends battery life in wireless variants beyond 2 years.

Use Scenario: Battery-powered light switches and scene controllers installed in residential environments with variable ambient EMI and user-hand capacitance variation.

IC Role / Device Role / Timing Role: Standalone touch interface processor; executes CapSense scanning, LED dimming via TCPWM, and BLE bridge communication through SCB-configured I²C.

Use Value: >5:1 SNR ensures false-trigger rate <0.1% even with wet fingers; 20 nA Stop Mode enables 5+ year coin-cell operation.

Medical Patient Monitors

Motorized Actuator Controllers

Use Scenario: Portable vital-sign recorders with sealed front-panel touch interface and analog sensor signal conditioning for ECG or SpO₂ frontends.

IC Role / Device Role / Timing Role: Mixed-signal SoC integrating SAR ADC sampling, opamp-based analog filtering, and CapSense button overlay - no external signal chain required.

Use Value: On-chip opamps buffer ADC inputs directly, eliminating external opamp drift errors; 12-bit resolution supports ≥80 dB dynamic range for clinical-grade biosignal capture.

Use Scenario: Compact linear actuators for automated furniture or medical beds requiring closed-loop position control and overcurrent protection.

IC Role / Device Role / Timing Role: Real-time motor controller using TCPWM for three-phase commutation and comparators for fast overcurrent shutdown (<1 µs response).

Use Value: Comparator-triggered TCPWM kill signal prevents MOSFET shoot-through; UDBs implement custom encoder interpolation logic offloading CPU.

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
CY8C4245FNI-483	Same package, 64 kB flash, 8 kB SRAM, identical peripherals - higher memory density for complex firmware or OTA update partitions.	Suitable for designs requiring dual-bank firmware updates or larger CapSense configuration tables.	Select when firmware footprint exceeds 32 kB or future scalability is required without PCB redesign.
STM32F072RBT6	ARM Cortex-M0, 128 kB flash, 16 kB SRAM, but lacks integrated CapSense, programmable analog, and UDBs - requires external components for touch or analog signal chain.	Better suited for cost-sensitive applications where touch is implemented externally or not required.	Choose only if CapSense integration, analog configurability, or hardware logic customization are unnecessary.

Compared with CY8C4245FNI-483, this part trades memory headroom for lower cost and smaller code footprint; versus STM32F072RBT6, it delivers integrated mixed-signal capability at the expense of third-party ecosystem tooling and broader vendor support.

Availability

CY8C4244FNI-443T is available at Aetrix Electronics and suitable for industrial HMI panels, smart home touch controls, medical patient monitors, and motorized actuator controllers requiring stable component supply and long-term lifecycle assurance.

Supply support for CY8C4244FNI-443T 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, specializing in power management, automotive, industrial, and security solutions.

This device belongs to the PSoC® 4200 product line - designed specifically for embedded systems demanding field-reconfigurable analog/digital logic, ultra-low-power operation, and integrated human-interface functionality without external component dependencies.

FAQ

What is the maximum operating frequency of the Arm Cortex-M0 core in CY8C4244FNI-443T?

The Arm Cortex-M0 core operates at up to 48 MHz, supported by a hardware multiplier delivering 32-bit results in one cycle. This frequency is achievable across the full 1.71–5.5 V supply range and –40 °C to +105 °C temperature range, with flash accelerator enabling zero-wait-state execution at 24 MHz and one-wait-state at 48 MHz.

Does CY8C4244FNI-443T support capacitive sensing through any GPIO pin?

Yes - all 36 GPIO pins support CapSense functionality via the integrated CapSense Sigma-Delta (CSD) engine. Each pin can serve as a sensor electrode, shield, or connection to external RC networks. SmartSense™ auto-tuning dynamically adjusts scan parameters per electrode, eliminating manual calibration for varying overlay thicknesses or environmental conditions.

Can the two SCBs be configured simultaneously as different interfaces (e.g., one as I²C and one as UART)?

Yes - each of the two serial communication blocks (SCBs) can be independently configured at runtime as I²C, SPI, or UART. This allows concurrent use of distinct protocols - for example, I²C for sensor communication and UART for host diagnostics - without hardware multiplexing or external level shifters.

What debug interface does CY8C4244FNI-443T use, and is external hardware required?

The device uses the 2-pin Serial Wire Debug (SWD) interface (SWDIO and SWCLK), fully compatible with industry-standard tools like Segger J-Link and ARM-compatible IDEs. No external debug pod or emulator is needed - only the two SWD signals plus power and ground are required for full programming, breakpoint, and watchpoint debugging in-system.

CY8C4244FNI-443T Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Package/Case:: 35-UFBGA, WLCSP

Series:: PSOC™ 4 CY8C42xx

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, Microwire, SmartCard, SPI, SSP, UART/USART

Peripherals:: Brown-out Detect/Reset, CapSense, LCD, LVD, POR, PWM, WDT

Number of I/O:: 31

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:

CY8C4244FNI-443T FAQ

1.How can I place an order for CY8C4244FNI-443T through Aetrix?

Please submit a Request for Quotation (RFQ) for CY8C4244FNI-443T 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 CY8C4244FNI-443T reliable?

The price and inventory of CY8C4244FNI-443T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C4244FNI-443T is usually 5 days.

3.What payment methods are accepted for CY8C4244FNI-443T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C4244FNI-443T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY8C4244FNI-443T?

CY8C4244FNI-443T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY8C4244FNI-443T 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 CY8C4244FNI-443T?

For technical support, including CY8C4244FNI-443T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C4244FNI-443T requirements.

6.How does Aetrix verify that CY8C4244FNI-443T is sourced from the original manufacturer or authorized distributors?

All CY8C4244FNI-443T 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 CY8C4244FNI-443T meets industry standards.

7.What is the process for return or replacement of CY8C4244FNI-443T?

All CY8C4244FNI-443T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C4244FNI-443T, 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 CY8C4244FNI-443T part is unused and in its original packaging.

Return procedure for CY8C4244FNI-443T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…

2026-07-08 Output Capacitor Selection for High-Current ASIC Vcore Rails

Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…

2026-07-07 High-Current ASIC Core Power Supply Design: 12-Phase Buck, PMBus and Dynamic Load Response

Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …

2026-07-06 Voltage Regulator: Types, Circuits, Testing and Selection Guide

Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.

2026-06-30 Amplifiers Explained: Types, Circuits, Gain, Classes and Applications

Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…