Infineon Technologies CY8C4246LTI-L445

Overview

CY8C4246LTI-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 (8 UDBs, 4 SCBs, 2 CAN blocks), and capacitive sensing (CSD) subsystems. It operates from 1.71 V to 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, automotive body control modules, and smart sensor nodes.

For engineers reviewing the CY8C4246LTI-L445 datasheet, CY8C4246LTI-L445 pinout, CY8C4246LTI-L445 application, or CY8C4246LTI-L445 equivalent, key selection criteria include its dual CAN interface, hardware-accelerated CAPSENSE™ with SmartSense™, configurable TCPWM kill-input triggering, and 94 GPIOs with programmable drive strength and slew rate - all validated for production-grade embedded control.

Technical Context

The device implements an Arm® Cortex®-M0 core with single-cycle multiply, coupled with a hierarchical clock system including IMO (8–48 MHz), ILO (32.768 kHz), and support for external crystals or PLL-based frequency synthesis. Its analog subsystem features four CTBm opamps with comparator mode and ADC input buffering, plus two low-power comparators active in Deep Sleep.

Digital reconfigurability is delivered via eight Universal Digital Blocks (UDBs), each with 8 macrocells and an 8-bit data path, alongside four Serial Communication Blocks (SCBs) that runtime-reconfigure as I²C, SPI, or UART - plus dedicated USB Full-Speed (12 Mbps) and dual CAN 2.0B controllers supporting industrial networking and battery charger detection.

Key Specifications

Pinout & Package

CY8C4246LTI-L445 is housed in a 68-pin QFN package (9 mm × 9 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are fully configurable via PSoC™ Creator; physical pin mapping aligns with Infineon's standardized 68-QFN footprint for mechanical and thermal compatibility across the PSoC™ 4200L series.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C4247LTI-L485, this part trades flash/SRAM headroom for cost-sensitive designs; versus STM32G474RET6, it delivers superior integration for capacitive HMI and mixed-signal flexibility but less raw compute throughput.

Availability

CY8C4246LTI-L445 is available at Aetrix Electronics and suitable for industrial HMI panels, automotive body control units, and smart sensor nodes requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade sourcing.

Supply support for CY8C4246LTI-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 MCUs, and security solutions, with global manufacturing and qualification to AEC-Q100 and ISO 26262 standards.

CY8C4246LTI-L445 belongs to the PSoC™ 4200L product line, designed specifically for cost-sensitive, low-power embedded systems requiring integrated analog, digital, and capacitive sensing - targeting industrial control, automotive body electronics, and IoT edge devices.

FAQ

Does CY8C4246LTI-L445 support USB device enumeration without external PHY?

Yes. The part integrates a full-speed USB 2.0 device controller with on-die transceivers and Battery Charger Detect (BCD) logic. No external PHY or level-shifting components are required - only standard USB DP/DM routing and 1.5 kΩ pull-up on DP for host detection.

What is the maximum operating temperature for CY8C4246LTI-L445 in industrial applications?

CY8C4246LTI-L445 is rated for operation from –40 °C to +85 °C ambient temperature under industrial conditions. Its thermal design supports sustained 48 MHz operation at full load within this range when mounted on a 2-layer PCB with ≥2 oz copper and adequate thermal vias to the ground plane.

Can the opamps be used in Deep Sleep mode while the CPU remains stopped?

Yes. All four CTBm opamps retain full functionality in Deep Sleep mode, including comparator operation and ADC input buffering. They draw ≤1 µA each and can generate interrupts or trigger DMA transfers without waking the CPU - enabling ultra-low-power sensor signal conditioning.

How many CAPSENSE™ buttons can be implemented simultaneously on this device?

Up to 64 self-capacitive or mutual-capacitive buttons can be scanned using the two CSD blocks, with hardware-accelerated SmartSense™ auto-tuning. Each CSD block supports up to 32 electrodes, and electrode routing is fully configurable across the 94 GPIOs - verified in AN85951 for production touch systems.