Infineon Technologies CY8C4244AXQ-443

Overview

CY8C4244AXQ-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 TCPWM blocks. It integrates reconfigurable analog/digital logic, CapSense® capacitive sensing, and LCD drive capability in a 44-pin TQFP package for embedded control applications requiring mixed-signal flexibility and low-power operation.

For engineers reviewing the CY8C4244AXQ-443 datasheet, CY8C4244AXQ-443 pinout, CY8C4244AXQ-443 application, or CY8C4244AXQ-443 equivalent, key selection criteria include flash/SRAM size, 48-MHz CPU performance, CapSense SNR (>5:1), Deep Sleep current (20 nA), and dual SCB support for I²C/SPI/UART reconfiguration.

Technical Context

The device implements a single-layer AHB-Lite interconnect between the Cortex-M0 CPU, SRAM, flash with read accelerator, and peripheral subsystems. Its programmable analog subsystem includes two CTBm opamps supporting ADC input buffering and comparator modes, while the digital side uses four universal digital blocks (UDBs) with macrocell-based logic and data path resources.

System-level timing relies on IMO (internal main oscillator), ILO (internal low-speed oscillator), and configurable clock dividers feeding TCPWM, SCBs, and CapSense blocks. Power management supports five modes-Active, Sleep, Deep Sleep, Hibernate, and Stop-with WIC-enabled GPIO wake-up and BOD/LVD monitoring across 1.71–5.5 V operation.

Key Specifications

Pinout & Package

Package: 44-pin TQFP (10 mm × 10 mm, 0.8 mm pitch), RoHS-compliant, lead-free, surface-mount.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar mixed-signal microcontroller applications.

Compared with CY8C4245AXI-483, this part offers identical analog/digital programmability in a smaller 44-pin TQFP but lacks USBFS; versus STM32F072RBT6, it trades raw memory capacity for integrated CapSense, opamps, and UDB logic-reducing external component count and layout complexity in sensor-rich embedded designs.

Availability

CY8C4244AXQ-443 is available at Aetrix Electronics and suitable for industrial HMI, smart sensor nodes, motor control interfaces, and medical handheld devices requiring stable component supply, extended temperature operation (–40 °C to +105 °C), and long-term lifecycle support.

Supply support for CY8C4244AXQ-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 management, sensing, and microcontroller solutions for automotive, industrial, and IoT markets.

This device belongs to the PSoC® 4200 product line, designed to unify programmable analog, digital, and MCU functions in a single chip for rapid prototyping and field-adaptable embedded systems where mixed-signal integration reduces system complexity and time-to-market.

FAQ

What debug interface does CY8C4244AXQ-443 support?

The device uses Arm Serial Wire Debug (SWD) with two-wire interface (SWDIO and SWCLK on P1[0]/P1[1]). It supports full-chip debugging, flash programming, and real-time trace without external pods or emulators. Debug is enabled by default and can only be disabled in firmware; re-enabling requires full flash erase and reprogramming.

Does CY8C4244AXQ-443 support capacitive touch sensing without external components?

Yes. It integrates CapSense Sigma-Delta (CSD) hardware with SmartSense™ auto-tuning, enabling robust touch button, slider, and proximity sensing directly on any GPIO pin. No external RC networks or dedicated touch controller ICs are required - only firmware configuration via PSoC Creator.

Can the 12-bit ADC operate during Deep Sleep mode?

No. The SAR ADC requires Active or Sleep mode to function. However, the device supports wake-up from Deep Sleep via comparator interrupts or GPIO events, allowing low-power polling: wake → acquire ADC sample → process → return to Deep Sleep within milliseconds.

Is there hardware support for LCD segment driving in low-power states?

Yes. The device drives up to 36 segments and 4 commons with built-in LCD bias generation and memory retention. In Deep Sleep mode, it maintains segment data in 4-bit-per-pin memory and updates display content autonomously without CPU involvement, drawing only ~1.5 µA.