Infineon Technologies CY8C4247LTI-L445

Overview

CY8C4247LTI-L445 from Infineon is a 32-bit Arm® Cortex®-M0 microcontroller in the PSoC™ 4200L family, integrating programmable analog (4 opamps, 2 comparators, 12-bit SAR ADC), digital logic (8 UDBs), and communication peripherals (4 SCBs, USB FS, 2 CAN). It operates from 1.71–5.5 V, supports Deep Sleep at 20 nA, and delivers up to 48 MHz CPU performance with 256 kB flash and 32 kB SRAM. Used in industrial HMI, capacitive touch interfaces, and motor control edge nodes.

For engineers reviewing the CY8C4247LTI-L445 datasheet, CY8C4247LTI-L445 pinout, CY8C4247LTI-L445 application, or CY8C4247LTI-L445 equivalent, key selection criteria include its dual CAN support, SmartSense™-enabled CSD capacitive sensing, Deep Sleep power profile, and reconfigurable UDB-based digital logic - all validated for production use in resource-constrained embedded systems.

Technical Context

The device implements an Arm® Cortex®-M0 core with single-cycle multiply, paired with a dedicated system-level clock tree including IMO (8/12/24/48 MHz), ILO (33 kHz), and external crystal/PLL options. Its analog subsystem features four CTBm opamps supporting comparator mode and ADC input buffering, plus two independent low-power comparators that remain active in Deep Sleep.

Digital flexibility stems from eight Universal Digital Blocks (UDBs), each with 8 macrocells and an 8-bit data path, enabling custom state machines or peripheral offload. Communication is handled by four runtime-reconfigurable Serial Communication Blocks (SCBs) supporting I²C/SPI/UART, plus dedicated USB Full-Speed and dual CAN 2.0B controllers - all with hardware-triggered TCPWM kill inputs for safety-critical timing.

Key Specifications

Pinout & Package

This device is packaged in a 68-pin QFN (9 × 9 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per the CY8C4247LTI-L445-specific pinout diagram in Infineon's datasheet Rev. *L, Section 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable microcontroller applications.

Compared with CY8C4248LTI-L489, this part offers lower memory density but identical low-power performance and peripheral set; versus STM32G071CBT6, it trades fixed-function simplicity for on-die programmability - critical for rapid prototyping and field-upgradable analog behavior.

Availability

CY8C4247LTI-L445 is available at Aetrix Electronics and suitable for industrial HMI panels, automotive body control modules, capacitive touch remote controls, and motor drive edge nodes requiring stable component supply across multi-year production cycles.

Supply support for CY8C4247LTI-L445 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and embedded security solutions, with global R&D and manufacturing infrastructure.

The PSoC™ 4200L product line targets cost-optimized, low-power embedded systems requiring mixed-signal programmability - especially in human interface, industrial sensing, and automotive body electronics where analog/digital co-design accelerates time-to-market.

FAQ

Does CY8C4247LTI-L445 support USB device enumeration without external components?

Yes. The part integrates a full-speed USB 2.0 transceiver with internal pull-up resistors and Battery Charger Detect circuitry. No external PHY or termination resistors are required for basic USB device enumeration and communication at 12 Mbps.

What is the maximum operating temperature range for CY8C4247LTI-L445?

The CY8C4247LTI-L445 is rated for industrial temperature operation from –40 °C to +85 °C. This range is validated per Infineon's datasheet Rev. *L, Section 5.2, and applies to all specified electrical characteristics and peripheral functionality.

Can the opamps operate while the CPU is in Deep Sleep mode?

Yes. All four CTBm opamps and both low-power comparators retain full functionality in Deep Sleep mode with typical current draw of ≤1 µA per opamp. They can condition analog signals or trigger wake events independently of CPU activity.

Is there hardware support for capacitive touch button debouncing and baseline tracking?

Yes. The integrated CSD blocks implement automatic baseline restoration, noise filtering, and finger-tracking algorithms in hardware. SmartSense™ performs real-time parameter optimization - eliminating need for firmware-based debouncing or manual calibration.