Infineon Technologies CY8C6145AZI-S3F12

Overview

CY8C6145AZI-S3F12 from Infineon is a dual-core Arm® Cortex®-M4F/M0+ PSOC™ 61 MCU optimized for secure, ultra-low-power IoT edge nodes. It integrates 512 KB flash, 256 KB SRAM, hardware cryptography acceleration, CAN FD, USB Full-Speed, and CAPSENSE™ capacitive sensing-enabling battery-powered smart sensors and connected industrial controllers operating from 1.7–3.6 V.

For engineers reviewing the CY8C6145AZI-S3F12 datasheet, CY8C6145AZI-S3F12 pinout, CY8C6145AZI-S3F12 application, or CY8C6145AZI-S3F12 equivalent, key selection criteria include dual-CPU power efficiency (22 µA/MHz @ 0.9 V M4), Deep Sleep current (7 µA with 64 KB SRAM retention), integrated CAN FD + USB, and hardware TRNG/secure boot support.

Technical Context

The device implements a tightly coupled dual-CPU architecture where the Cortex-M4F handles application processing and real-time control, while the Cortex-M0+ manages system-level functions including security services and peripheral offload-core logic operates at either 0.9 V or 1.1 V to optimize active-mode efficiency. Its clock system combines an 8-MHz IMO (±2%), 32-kHz ILO, PLL/FLL frequency multipliers, and integer/fractional dividers to deliver precise timing across mixed-voltage domains.

Security is embedded at silicon level: ROM-based secure boot with hardware SHA-256 hashing, eight configurable protection contexts, debug/test ingress disablement, and dedicated crypto accelerator supporting AES-128/256, ECC, RSA, and true random number generation via TRNG.

Key Specifications

Pinout & Package

This device is packaged in a 100-pin TQFP (Thin Quad Flat Package) with 64 GPIOs, including two overvoltage-tolerant (OVT) pins and two Smart I/O ports enabling Boolean logic during Deep Sleep.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32WB55RGV and KW45B41Z, CY8C6145AZI-S3F12 uniquely combines CAN FD, USB Full-Speed, hardware-accelerated crypto, and CAPSENSE™ in a single die-enabling consolidated BOMs for industrial gateways and medical wearables requiring both wired/wireless connectivity and secure human interface.

Availability

CY8C6145AZI-S3F12 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home hubs, medical wearables, and automotive body controllers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for CY8C6145AZI-S3F12 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 ICs, and secure microcontrollers-with annual R&D investment exceeding €1.2 billion.

This part belongs to the PSOC™ 61 MCU product line, engineered specifically for ultra-low-power, security-critical IoT endpoints that demand concurrent wired/wireless connectivity, analog sensing fidelity, and hardware-enforced trust boundaries.

FAQ

What is the maximum operating frequency of the Cortex-M4F core in CY8C6145AZI-S3F12?

The Cortex-M4F core operates at up to 150 MHz, verified under 1.1-V core supply with ambient temperature ≤85°C. At 0.9-V core voltage, maximum frequency is reduced to 100 MHz to maintain timing closure and power efficiency-both configurations are supported in production firmware via the Power Management Unit (PMU).

Does CY8C6145AZI-S3F12 support Execute-In-Place (XIP) from external flash?

Yes-it features a Quad-SPI/Serial Memory Interface (SMIF) with hardware-accelerated XIP support, including on-the-fly AES-128 decryption and a dedicated 4-KB cache. External flash must be quad-SPI compatible and configured for single/dual/quad I/O modes; SMIF supports up to 320 Mbps throughput in quad mode.

How many protection contexts does the security subsystem provide?

The device implements eight independent protection contexts, each defining memory access permissions, peripheral enablement, and interrupt masking. These contexts are enforced by the Memory Protection Unit (MPU) and Security Configuration Registers (SCR), enabling strict isolation between secure boot, RTOS tasks, and application code-verified in Infineon's PSOC™ 6 Security Reference Manual.

Is the CAPSENSE™ subsystem capable of operating during Deep Sleep mode?

Yes-the CAPSENSE™ CSD hardware block remains fully functional in Deep Sleep mode, allowing continuous proximity or touch detection without waking the CPU. It uses the 32-kHz ILO clock and draws <1.5 µA, with results stored in dedicated SRAM sections retained during Deep Sleep.