Infineon Technologies CY91F522DSCPMC-GS-ERE2

Overview

CY91F522DSCPMC-GS-ERE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S automotive microcontroller with 256 KB + 64 KB program flash, 48 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 PLL clock multiplication (4 MHz source ×20), supports IEEE 754 FPU, MPU, ECC memory, and runs in -40 °C to +125 °C for engine control unit (ECU) and body control module (BCM) applications.

For engineers reviewing the CY91F522DSCPMC-GS-ERE2 datasheet, CY91F522DSCPMC-GS-ERE2 pinout, CY91F522DSCPMC-GS-ERE2 application, or CY91F522DSCPMC-GS-ERE2 equivalent, key selection criteria include its 80-pin LQFP package, dual 12-bit ADC (16+16 ch), LIN 2.1 support, RTC with sub-clock calibration, and hardware watchdog with configurable timeout.

Technical Context

The CY91F522DSCPMC-GS-ERE2 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and instruction compatibility with the FR family. It integrates a 100 kHz CR oscillator, SSCG clock generator, and dual-clock supervisor that switches to CR clock upon main/sub-oscillator failure.

Peripheral integration includes three independent CAN controllers (128/64 message buffers per channel), 12-channel multi-function serial interface supporting UART/LIN/CSIO/I²C, and a 16-bit PPG subsystem with 27 channels for LED and timing-critical actuation. All memory blocks feature ECC protection, and the MPU enforces eight configurable access-privilege zones across user/privilege modes.

Key Specifications

Pinout & Package

Package: 80-pin LQFP (LQH080), 12 mm × 12 mm × 1.4 mm body, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RH850/F1K and S32K144, the CY91F522DSCPMC-GS-ERE2 provides optimal balance of LIN/CAN integration, deterministic real-time response, and AEC-Q100 Grade 1 reliability - making it ideal for cost-sensitive, safety-aware body electronics where mixed-protocol consolidation matters more than raw MHz or CAN FD.

Availability

CY91F522DSCPMC-GS-ERE2 is available at Aetrix Electronics and suitable for engine control units, body control modules, and electric power steering systems requiring stable component supply across extended automotive production lifecycles.

Supply support for CY91F522DSCPMC-GS-ERE2 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 MCUs, and security solutions for industrial and transportation markets.

The CY91520 series - including CY91F522DSCPMC-GS-ERE2 - was originally developed by Cypress and is now maintained by Infineon to serve automotive Tier-1 suppliers needing AEC-Q100-compliant, high-integration microcontrollers with robust analog/mixed-signal peripherals.

FAQ

What is the maximum operating frequency and how is it achieved?

The CY91F522DSCPMC-GS-ERE2 achieves 80 MHz maximum operation using an on-chip PLL that multiplies a 4 MHz external crystal by 20×. This yields a 12.5 ns minimum instruction cycle time. The FR81S core's 5-stage pipeline and Harvard architecture sustain this throughput with single-cycle instruction execution for basic operations and deterministic interrupt latency.

Does this MCU support LIN communication, and which revision is implemented?

Yes, the CY91F522DSCPMC-GS-ERE2 integrates full hardware LIN 2.1 support within its multi-function serial interface. It handles synch break generation/detection, delimiter timing, checksum calculation, and frame error detection autonomously - eliminating CPU overhead for LIN protocol handling in body electronics nodes.

What memory protection and safety features are included?

The MCU includes a Memory Protection Unit (MPU) with eight configurable regions, ECC protection for flash and RAM, hardware and software watchdog timers with programmable timeouts, and a Timing Protection Unit (TPU) for runtime instruction flow monitoring. These features collectively support ISO 26262 ASIL-B development for automotive control applications.

Is the part qualified for automotive use, and what is its temperature grade?

Yes, CY91F522DSCPMC-GS-ERE2 is AEC-Q100 qualified Grade 1, rated for continuous operation from −40 °C to +125 °C ambient temperature. Its design includes dual-clock supervision, low-voltage detection reset (2.8 V ±8%), and robust ESD tolerance - meeting stringent reliability requirements for under-hood and cabin-mounted automotive electronics.