Infineon Technologies CY8C6244LQI-S4D62

Overview

CY8C6244LQI-S4D62 from Infineon is a dual-core Arm® Cortex®-M4F/M0+ PSOC™ 62 microcontroller with 256 KB flash, 128 KB SRAM, integrated CAN FD, USB Full-Speed, and hardware cryptography accelerators. It operates from 1.7–3.6 V, achieves 7 µA Deep Sleep current with 64 KB SRAM retention, and supports XIP from external Quad-SPI Flash at up to 320 Mbps-targeted for secure, ultra-low-power IoT edge nodes requiring real-time sensor fusion and wireless coexistence.

For engineers reviewing the CY8C6244LQI-S4D62 datasheet, CY8C6244LQI-S4D62 pinout, CY8C6244LQI-S4D62 application, or CY8C6244LQI-S4D62 equivalent, this device delivers verified dual-CPU deterministic execution, on-chip DC-DC buck regulation (<1 µA quiescent), segment LCD drive (61 seg/8 com), and CAPSENSE™ with SmartSense auto-tuning-critical for battery-powered industrial HMI, BLE/Wi-Fi gateway controllers, and functional-safety-aware sensor hubs.

Technical Context

The CY8C6244LQI-S4D62 implements a tightly coupled dual-CPU subsystem: a 150-MHz Cortex-M4F with FPU and MPU handles real-time signal processing and secure boot verification, while the 100-MHz Cortex-M0+ manages low-power peripheral orchestration and Deep Sleep SCB operation. Inter-processor communication uses hardware IPC channels with doorbell interrupts and shared memory regions.

Its clock system integrates an 8-MHz IMO (±2%), 32-kHz ILO, programmable PLL/FLL, and crystal oscillators (16–35 MHz + 32 kHz), enabling dynamic frequency scaling across six power modes. The SMIF controller supports encrypted XIP with 4-KB cache and quad/dual/single SPI modes-enabling secure firmware updates without SRAM footprint overhead.

Key Specifications

Pinout & Package

This device is housed in an 80-pin TQFP package (body size 12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per Infineon's official CY8C62x4 Datasheet Rev. *O, Section 4 "Pinouts".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core, secure MCU applications.

Compared with RP2040 and STM32WB55RG, CY8C6244LQI-S4D62 uniquely combines dual-core real-time partitioning, hardware-enforced security, CAN FD + USB + SMIF concurrency, and production-ready CAPSENSE™-making it the only option for certified industrial gateways requiring simultaneous protocol handling and tamper-resistant firmware updates.

Availability

CY8C6244LQI-S4D62 is available at Aetrix Electronics and suitable for industrial sensor hubs, BLE/Wi-Fi gateways, functional-safety HMIs, and capacitive touch remotes requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for CY8C6244LQI-S4D62 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 German semiconductor manufacturer specializing in power management, automotive MCUs, and secure embedded solutions-with leadership in industrial and IoT silicon.

The PSOC™ 62 product line targets secure, ultra-low-power edge intelligence-designed to unify real-time control, wireless connectivity, analog sensing, and hardware-rooted security in a single chip for next-generation industrial and consumer IoT endpoints.

FAQ

Does CY8C6244LQI-S4D62 support JTAG debugging?

Yes, it supports SWD and JTAG interfaces via the SWJ-DP debug port. The 32-bit Silicon ID-including die revision, part number encoding ("E4B0"), and manufacturer ID ("069")-is accessible through this interface. Debug access can be permanently disabled via eFuse programming to enforce production security policies.

What is the maximum operating frequency of the CAN FD peripheral?

The integrated CAN FD block supports bit rates up to 5 Mbps in FD mode and 1 Mbps in classical CAN mode. It requires an external CAN transceiver (e.g., Infineon TLE9251VS) for physical layer compliance and bus termination. Clock source is derived from the PLL or FLL with programmable prescalers.

Can the segment LCD driver operate while the CPU cores are in Deep Sleep?

Yes-the segment LCD driver operates autonomously in System Deep Sleep mode using the 32-kHz ILO clock. It maintains display content without CPU intervention and supports automatic blinking, dimming, and segment mapping updates via dedicated LCD registers accessible from Deep Sleep SCB.

How is flash memory protected against unauthorized readout?

Flash protection is enforced via hardware lock bits in supervisory flash (SFlash) and eFuse-controlled readout disable. Once enabled, debug interface read access to flash is blocked, and Secure Boot verifies digital signatures of all executable images-preventing unsigned or tampered firmware from loading into RAM or executing.