Infineon Technologies CY8C624ABZI-S2D44

Overview

CY8C624ABZI-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 accelerator - deployed in IoT edge nodes requiring secure, low-power sensor fusion and human interface control.

For engineers reviewing the CY8C624ABZI-S2D44 datasheet, CY8C624ABZI-S2D44 pinout, CY8C624ABZI-S2D44 application, or CY8C624ABZI-S2D44 equivalent, key selection criteria include dual-CPU power efficiency (27 µA/MHz @ 0.9 V M4), Deep Sleep current (7 µA with 64-KB SRAM retention), SMIF throughput (up to 640 Mbps), and on-chip security features including ROM-based Secured Boot and TRNG.

Technical Context

The device implements a tightly coupled dual-CPU subsystem where the M4 handles complex real-time tasks (e.g., audio processing via PDM/I2S) while the M0+ manages low-power system orchestration, inter-processor communication (IPC), and peripheral offload - both cores share memory-mapped peripherals and support independent power domains.

Its programmable analog-digital architecture integrates a 12-bit 2-Msps SAR ADC with 16-channel sequencer and averaging, two Deep Sleep-capable comparators, CAPSENSE™ sigma-delta for liquid-tolerant touch, and Smart I/O Boolean logic blocks active during system Deep Sleep - enabling autonomous wake-up and preprocessing without CPU intervention.

Key Specifications

Pinout & Package

This device is packaged in a 44-pin WLCSP (Wafer-Level Chip Scale Package) with 0.4-mm pitch, optimized for space-constrained IoT endpoints. Pin functions are validated per Infineon's official CY8C62x8/A datasheet Rev. *S (002-23185), 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 CY8C6247BZI-D54, the CY8C624ABZI-S2D44 trades pin count and package size for ultra-compact deployment in wearables and sealed enclosures; versus RA6M5GFPMXXA00, it delivers superior low-power autonomy and integrated human interface logic at the cost of single-core determinism and safety certification scope.

Availability

CY8C624ABZI-S2D44 is available at Aetrix Electronics and suitable for smart home sensor hubs, wearable health monitors, industrial edge gateways, and secure access control panels requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for CY8C624ABZI-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 leader specializing in power management, automotive MCUs, and secure connectivity solutions, with global manufacturing and R&D infrastructure.

The PSOC™ 62 product line targets secure, ultra-low-power IoT endpoints - integrating programmable analog/digital fabric, dual-core processing, and hardware-rooted security to replace discrete signal-chain and control components in battery-operated edge devices.

FAQ

Does CY8C624ABZI-S2D44 support USB device enumeration without external components?

Yes. The part integrates a full-speed USB 2.0 PHY and controller compliant with USB 2.0 specification. It supports standard device classes (HID, CDC, MSC) directly from VBUS or VDDD supply, requiring only passive termination resistors and a crystal oscillator - no external transceiver or level shifter is needed.

What is the maximum supported external clock frequency for the SMIF interface?

The SMIF interface supports external quad-SPI flash devices operating up to 160 MHz clock frequency in octal mode, delivering up to 640 Mbps effective throughput. This is achieved using double-data-rate (DDR) signaling and hardware prefetch, as confirmed in the electrical specifications section (6.4.4) of datasheet Rev. *S.

Can the CAPSENSE™ subsystem operate during Deep Sleep mode?

Yes. CAPSENSE™ CSD scanning can run autonomously during Deep Sleep mode using the low-power comparator and dedicated CSD hardware block. The device achieves <1 µA additional current during active scan, and results are stored in retained SRAM - enabling wake-on-touch with zero CPU involvement.

Is the 1-Kb eFuse array field-programmable after initial programming?

No. The 1-Kb eFuse array is one-time-programmable (OTP) and permanently stores device-specific keys, calibration data, and security configuration. Once blown, individual bits cannot be reset or reprogrammed - it is used exclusively for root-of-trust elements such as public key hashes and anti-rollback counters.