Infineon Technologies CY8C6244LQQ-S4D92

Overview

CY8C6244LQQ-S4D92 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 V to 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 - deployed in secure, battery-powered IoT edge nodes requiring real-time sensor fusion and wireless coexistence.

For engineers reviewing the CY8C6244LQQ-S4D92 datasheet, CY8C6244LQQ-S4D92 pinout, CY8C6244LQQ-S4D92 application, or CY8C6244LQQ-S4D92 equivalent, key selection criteria include dual-CPU power-performance tradeoff, on-chip DC-DC quiescent current (<1 µA), CAN FD timing compliance, and SMIF encryption capability for secure firmware updates.

Technical Context

The device implements a tightly coupled dual-CPU subsystem: the 150-MHz Cortex-M4F handles compute-intensive tasks (e.g., sensor fusion, crypto operations) with FPU and MPU, while the 100-MHz Cortex-M0+ manages low-power peripheral orchestration and real-time control. Inter-processor communication uses hardware IPC channels with doorbell interrupts and shared memory regions.

Its clock architecture 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 block supports on-the-fly AES-128 decryption during XIP execution, with 4-KB cache to reduce active cycles and leakage.

Key Specifications

Pinout & Package

This device is packaged in an 80-pin TQFP (LQQ) with 0.5-mm pitch, thermally enhanced for industrial ambient operation. Pin functions are validated per Infineon's 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 STM32WB55RGV6 and LPC55S69JBD100, CY8C6244LQQ-S4D92 uniquely combines CAN FD, USB FS, SMIF with AES decryption, and sub-µA DC-DC quiescent current - making it the only option for battery-powered industrial gateways needing wired/wireless protocol bridging and secure firmware update capability.

Availability

CY8C6244LQQ-S4D92 is available at Aetrix Electronics and suitable for industrial sensor nodes, secure wireless gateways, medical wearables, and automotive body control modules requiring stable component supply across extended product lifecycles.

Supply support for CY8C6244LQQ-S4D92 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 security solutions, with global manufacturing and R&D infrastructure.

The PSoC™ 62 product line targets ultra-low-power, secure IoT endpoints - integrating dual-core processing, hardware security, and programmable analog/digital blocks to eliminate discrete component dependencies in edge intelligence designs.

FAQ

What is the maximum operating frequency of the Cortex-M4F core in CY8C6244LQQ-S4D92?

The Cortex-M4F core operates at up to 150 MHz, confirmed in the CY8C62x4 Datasheet Rev. *O Section 3.1.1. This frequency is achievable under 1.1-V core supply and ambient temperatures ≤85°C. At 0.9-V core voltage, max frequency reduces to 100 MHz to maintain timing closure and power efficiency.

Does CY8C6244LQQ-S4D92 support external memory execution with hardware encryption?

Yes - the Serial Memory Interface (SMIF) supports Execute-In-Place (XIP) from external Quad-SPI Flash with on-the-fly AES-128 decryption. This is implemented in dedicated hardware, requiring no CPU involvement, and is documented in Section 3.5.5 of the datasheet with throughput up to 320 Mbps in quad mode.

How many GPIOs support overvoltage tolerance, and what is the rating?

Two GPIO pins (P0.0 and P0.1) are overvoltage-tolerant (OVT) to 5.5 V, as specified in Section 6.2.4 of the datasheet. These pins retain functionality when interfaced with 5-V logic or sensors, eliminating level-shifters in mixed-voltage system designs.

Is the CAN FD controller compliant with ISO 11898-1:2015, and what is its maximum bit rate?

Yes - the integrated CAN FD controller complies with ISO 11898-1:2015 and supports data bit rates up to 5 Mbps, as verified in Section 3.5.4 and Table 6-72 of the datasheet. It requires an external CAN FD transceiver (e.g., TJA1044) and supports both classic CAN and FD frames with flexible data-length coding.