Infineon Technologies CY8C624AAZI-S2D44

Overview

CY8C624AAZI-S2D44 from Infineon is a dual-core PSOC™ 62 microcontroller featuring a 150-MHz Arm® Cortex®-M4F and 100-MHz Cortex®-M0+ CPU, 2048-KB flash, 1024-KB SRAM, and integrated CAPSENSE™, USB FS, QSPI/XIP, and hardware cryptography. It operates from 1.7 V to 3.6 V with 7 µA Deep Sleep current and supports secure boot and execute-only memory protection - deployed in battery-powered IoT edge nodes requiring concurrent real-time control and low-power sensing.

For engineers reviewing the CY8C624AAZI-S2D44 datasheet, CY8C624AAZI-S2D44 pinout, CY8C624AAZI-S2D44 application, or CY8C624AAZI-S2D44 equivalent, key selection criteria include dual-CPU power efficiency (27 µA/MHz @ 0.9 V M4), on-chip DC-DC quiescent current (<1 µA), SMIF throughput up to 640 Mbps, 32 TCPWMs with kill-signal triggering, and ROM-based root of trust for secure firmware updates.

Technical Context

The device implements a tightly coupled dual-CPU subsystem where the M4 handles complex signal processing and protocol stacks while the M0+ manages low-latency peripherals and deep-sleep wake-up events via Smart I/O and LP comparators. Inter-processor communication uses hardware IPC channels with doorbell interrupts and shared memory regions protected by MPU.

Clock architecture integrates two PLLs, an FLL, and fractional dividers enabling independent domain clocking: the M4 runs from a 150-MHz PLL-derived clock, the M0+ from a separate 100-MHz source, and peripherals derive clocks via programmable integer/fractional dividers - all synchronized to a common reference for deterministic timing across domains.

Key Specifications

Pinout & Package

This device is packaged in a 44-pin SOIC (S2D44 suffix denotes 44-pin SOIC package with industrial temperature range –40°C to +85°C and green RoHS-compliant finish).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C6247FDI-D52 and STM32WB55RGV, CY8C624AAZI-S2D44 uniquely balances ultra-low-power dual-core operation in a compact SOIC package with hardware-accelerated security and CAPSENSE™ - making it optimal for space-constrained, battery-powered IoT HMI devices needing concurrent sensing, processing, and secure connectivity.

Availability

CY8C624AAZI-S2D44 is available at Aetrix Electronics and suitable for wearable health monitors, smart home hubs, industrial wireless sensor nodes, and POS terminal peripherals requiring stable component supply across long-lifecycle deployments.

Supply support for CY8C624AAZI-S2D44 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, sensing, security, and microcontroller solutions for industrial, automotive, and IoT markets.

CY8C624AAZI-S2D44 belongs to the PSoC™ 62 product line - designed specifically for secure, ultra-low-power IoT edge devices that require concurrent real-time processing, rich human-machine interaction, and robust firmware integrity enforcement.

FAQ

What is the maximum operating frequency of each CPU core in CY8C624AAZI-S2D44?

The Arm Cortex-M4F core operates at up to 150 MHz, while the Cortex-M0+ core runs at up to 100 MHz. Both cores support independent clock sources via dedicated PLLs and FLLs, allowing simultaneous full-speed operation without contention. Frequency scaling is managed through the Clock Configuration block and can be adjusted dynamically in firmware using the PSoC™ 6 HAL APIs.

Does CY8C624AAZI-S2D44 support external memory execution (XIP)?

Yes - the Quad-SPI/SMIF interface supports Execute-In-Place from external quad-SPI flash memory. It includes a 4-KB instruction cache, on-the-fly AES-128 encryption/decryption, and support for single/dual/quad/octal I/O modes with throughput up to 640 Mbps. XIP mode is enabled via configuration registers and requires external flash with appropriate command-set compatibility.

How many GPIOs are available, and what advanced I/O features does it offer?

CY8C624AAZI-S2D44 provides up to 102 programmable GPIOs across multiple banks. Key features include six overvoltage-tolerant (OVT) pins, programmable drive strength/slew rate, Smart I/O Boolean logic capability (available in Deep Sleep), and capacitive sensing via CAPSENSE™ CSD. The SOIC-44 package exposes 32 GPIOs with specific pin assignments documented in the device's pinout table.

Is hardware cryptographic acceleration included, and which algorithms are supported?

Yes - the integrated cryptography accelerator supports AES-128/256 (ECB/CBC/CTR/GCM), SHA-256, ECC P-256, RSA-2048, and a true random number generator (TRNG). These functions are accessible via the Crypto API in ModusToolbox™ and operate independently of the CPU cores, enabling secure boot, OTA updates, and TLS offload without impacting real-time application performance.