Infineon Technologies CY8C6245LQI-S3D02

Overview

CY8C6245LQI-S3D02 from Infineon is a dual-core Arm® Cortex®-M4F/M0+ PSOC™ 62 MCU with 512-KB flash, 256-KB SRAM, integrated CAN FD, USB Full-Speed, and hardware cryptography acceleration. It operates from 1.7–3.6 V, achieves 7 µA Deep Sleep current with 64-KB SRAM retention, and supports XIP from external QSPI flash at up to 320 Mbps - deployed in battery-powered industrial IoT edge nodes requiring secure firmware updates and low-power sensor aggregation.

For engineers reviewing the CY8C6245LQI-S3D02 datasheet, CY8C6245LQI-S3D02 pinout, CY8C6245LQI-S3D02 application, or CY8C6245LQI-S3D02 equivalent, key selection criteria include dual-CPU power efficiency (22 µA/MHz @ 0.9 V on M4), on-chip DC-DC buck converter (<1 µA quiescent), CAN FD + USB coexistence, and hardware TRNG + Secure Boot for OTA update integrity.

Technical Context

The device integrates two independent CPU subsystems: a 150-MHz Cortex-M4F with FPU and MPU, and a 100-MHz Cortex-M0+ with MPU, both supporting dynamic voltage scaling between 1.1 V and 0.9 V. Inter-processor communication uses hardware IPC channels with doorbell interrupts and shared memory regions.

Its clock system combines an 8-MHz IMO (±2%), 32-kHz ILO, programmable PLL/FLL, and integer/fractional peripheral dividers - enabling precise timing control across TCPWMs, SCBs, and USB while maintaining sub-µA Deep Sleep operation with RTC backup domain active.

Key Specifications

Pinout & Package

Package: 100-pin Thin Quad Flat Package (TQFP), 0.5-mm pitch, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CY8C6245LQI-S3D02, CY8C6247LQI-D52 trades CAN FD for higher memory density, while STM32WB55RGV replaces dual-core deterministic partitioning with integrated BLE - making CY8C6245LQI-S3D02 uniquely suitable for secure, low-power industrial gateways requiring concurrent real-time control and encrypted communications.

Availability

CY8C6245LQI-S3D02 is available at Aetrix Electronics and suitable for industrial IoT sensor nodes, secure OTA gateways, smart building controllers, and medical wearable hubs requiring stable component supply and long-term lifecycle assurance.

Supply support for CY8C6245LQI-S3D02 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 embedded solutions, with R&D centers across Europe, Asia, and the Americas.

This device belongs to the PSoC™ 62 product line - designed specifically for ultra-low-power, secure, and sensor-rich IoT endpoints that demand hardware-enforced trust boundaries and flexible analog/digital reconfigurability.

FAQ

Does CY8C6245LQI-S3D02 support JTAG debugging?

No - it uses Serial Wire Debug (SWD) only, with dedicated SWDCK and SWDIO pins. JTAG is not implemented; debug access requires CMSIS-DAP or Segger J-Link with SWD protocol support. The SWJ-DP interface supports full halt-mode debugging, memory inspection, and flash programming without requiring external debug probes with JTAG pins.

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

The CAN FD block supports bit rates up to 5 Mbps in fast-phase mode, with programmable timing registers compliant with ISO 11898-1:2015. It operates independently of CPU clocks and can run concurrently with USB Full-Speed and TCPWM timers without resource contention.

Can the on-chip DC-DC buck converter power external circuitry?

No - the integrated buck converter supplies only internal VDDD and VDDIO rails. Its output is not accessible externally; external loads must be powered from separate regulators. The converter's <1 µA quiescent current and high light-load efficiency are optimized solely for internal power domain regulation.

Is the 12-bit SAR ADC capable of simultaneous sampling across multiple channels?

No - it features a single ADC core with a 16-channel hardware sequencer and result averaging, but no true simultaneous sampling. Channel switching occurs in <1 µs, enabling pseudo-simultaneous acquisition for motor control or multi-sensor correlation when synchronized to TCPWM triggers.