Infineon Technologies CY91F524FSCPMC-GSE2

Overview

CY91F524FSCPMC-GSE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S automotive microcontroller with 512 KB + 64 KB program flash, 64 KB main RAM + 8 KB backup RAM, and integrated CAN 2.0B controllers (3 channels, up to 1 Mbps). It operates at 80 MHz using on-chip PLL (4 MHz input ×20), supports IEEE 754 FPU, MPU, ECC memory, and runs in -40°C to +125°C for engine control and body electronics.

For engineers reviewing the CY91F524FSCPMC-GSE2 datasheet, CY91F524FSCPMC-GSE2 pinout, CY91F524FSCPMC-GSE2 application, or CY91F524FSCPMC-GSE2 equivalent, key selection criteria include its 100-pin LQFP package, dual A/D converters (12-bit, 37 total channels), LIN 2.1 support, RTC with sub-clock calibration, and hardware watchdog with configurable timeout.

Technical Context

The CY91F524FSCPMC-GSE2 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and instruction-per-cycle execution. It integrates dual A/D units (12-bit, 1.4 μs conversion), three independent CAN controllers (128/64-message buffers), and a multi-channel PPG/timer subsystem supporting LED drive and motor control waveforms.

Its clock system combines main (4–16 MHz), sub (32 kHz), and CR (100 kHz) oscillators with SSCG and automatic failover to CR clock upon sub-oscillator fault. Power management includes Sleep, Stop, Watch, and Sub RUN modes, with independent external/internal LVD reset detection and POR circuitry.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit automotive microcontroller applications.

Compared with RH850/F1L and S32K144, the CY91F524FSCPMC-GSE2 provides unique value in deterministic 80 MHz real-time control with integrated FPU, dual independent A/D units, and sub-clock RTC calibration-critical for cost-sensitive engine and chassis modules where mixed-signal precision and thermal stability are non-negotiable.

Availability

CY91F524FSCPMC-GSE2 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor hubs, and electric power steering systems requiring stable component supply across automotive production lifecycles.

Supply support for CY91F524FSCPMC-GSE2 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive ICs, and security solutions.

The CY91520 series-now part of Infineon's automotive MCU portfolio-was originally developed by Cypress to deliver high-integrity, ASIL-B-capable control for powertrain and chassis applications using the FR81S core and robust analog integration.

FAQ

What is the maximum operating frequency and clock source configuration for CY91F524FSCPMC-GSE2?

The CY91F524FSCPMC-GSE2 achieves 80 MHz operation using its on-chip PLL with a 4.0 MHz crystal input multiplied by 20. It supports multiple clock sources: main oscillator (4–16 MHz), sub-oscillator (32.768 kHz), and internal CR oscillator (100 kHz), with automatic failover to CR clock if sub-oscillator fault is detected by the Clock Supervisor.

Does CY91F524FSCPMC-GSE2 support functional safety standards such as ISO 26262?

Yes-the CY91F524FSCPMC-GSE2 includes hardware features aligned with ASIL-B requirements: ECC on flash and RAM, memory protection unit (MPU), hardware watchdog timer with configurable window, CRC generator, and lock-step capable peripherals. Infineon provides safety documentation including FMEDA reports and safety manuals for ISO 26262 development use.

How many CAN channels does CY91F524FSCPMC-GSE2 integrate, and what are their buffer configurations?

The CY91F524FSCPMC-GSE2 integrates three independent CAN 2.0B controllers. Channel 0 provides 128 message buffers (transmit/receive), while channels 1 and 2 each provide 64 message buffers. All channels support bit rates up to 1 Mbps and include dedicated message filtering, FIFO handling, and DMA transfer support.

What are the power supply requirements and low-voltage monitoring capabilities?

The device requires a single 5 V supply (2.7 V to 5.5 V range) with internal 1.2 V core voltage generated on-chip. It includes dual low-voltage detection (LVD): external supply monitored at 2.8 V ±8% (configurable ON/OFF per part number), and internal supply monitored independently. Both trigger reset with programmable delay to ensure safe shutdown during brownout conditions.