Infineon Technologies CY91F525BSDPMC1-GS-ERE2

Overview

CY91F525BSDPMC1-GS-ERE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S automotive microcontroller with 768 KB + 64 KB program flash, 96 KB main RAM + 8 KB backup RAM, and integrated CAN 2.0B controllers (3 channels, up to 1 Mbps). It features IEEE 754-compliant FPU, memory protection unit (MPU), and operates from -40 °C to +125 °C for engine control and body electronics applications.

For engineers reviewing the CY91F525BSDPMC1-GS-ERE2 datasheet, CY91F525BSDPMC1-GS-ERE2 pinout, CY91F525BSDPMC1-GS-ERE2 application, or CY91F525BSDPMC1-GS-ERE2 equivalent, key selection criteria include its 80 MHz FR81S core, dual 12-bit ADC (max 48 ch), LIN 2.1 support, RTC with sub-clock calibration, and LQFP-144 package with 120 GPIOs (no sub-oscillator).

Technical Context

The CY91F525BSDPMC1-GS-ERE2 implements a 5-stage pipelined FR81S RISC core with Harvard architecture, supporting 16-bit fixed-length instructions at 1 instruction/cycle and signed 32-bit multiplication in 5 cycles. It integrates on-chip PLL with 1–20× multiplication, SSCG clock generation, and dual 100 kHz CR oscillator for fail-safe clock switching.

Peripheral integration includes three independent CAN controllers (128/64 message buffers per channel), 12-channel multi-function serial interface (UART/CSIO/LIN/I²C), 48-channel PPG for LED drive, and ECC-protected flash/RAM. The device supports sleep/stop/watch/sub-run low-power modes with hardware watchdog and power-on reset.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (LQH144), 20 mm × 20 mm, 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 CY91F525BSDPMC1-GS-ERE2 offers superior analog integration (48 ADC channels, 2 DACs, RTC), deterministic FR81S execution, and tighter temperature grade (-40 °C to +125 °C) without requiring external precision clocks or memory.

Availability

CY91F525BSDPMC1-GS-ERE2 is available at Aetrix Electronics and suitable for engine control units, body control modules, electric power steering systems, and ADAS sensor hubs requiring stable component supply across extended automotive lifecycles.

Supply support for CY91F525BSDPMC1-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, and industrial control ICs.

This device belongs to the CY91520 series - Infineon's automotive-qualified FR81S microcontroller family targeting high-reliability powertrain and chassis applications with integrated safety features and extended temperature operation.

FAQ

What is the maximum operating frequency and instruction timing of the CY91F525BSDPMC1-GS-ERE2?

The CY91F525BSDPMC1-GS-ERE2 runs at a maximum system clock of 80 MHz, delivering a minimum instruction execution time of 12.5 ns. This is achieved using the on-chip PLL with 20× multiplication of a 4.0 MHz crystal input. The FR81S core executes most 16-bit instructions in a single cycle due to its 5-stage pipeline and load/store architecture.

Does this MCU support CAN FD or only classical CAN 2.0B?

The CY91F525BSDPMC1-GS-ERE2 supports only classical CAN 2.0B protocol, with three independent controllers capable of up to 1 Mbps bit rate. It does not implement CAN FD features such as flexible data-rate or extended data length. CAN FD support requires external protocol translation or migration to newer families like Infineon's AURIX™ TC3xx series.

How many ADC channels are available and what is their resolution and conversion speed?

This MCU provides two independent 12-bit successive-approximation ADC units totaling 48 input channels (32 + 16). Each conversion completes in 1.4 μs under typical conditions. Channels are distributed across multiple port groups and support hardware-triggered sampling synchronized to timer events or external signals.

Is the LQFP-144 package lead-free and RoHS-compliant?

Yes, the CY91F525BSDPMC1-GS-ERE2 in LQFP-144 packaging is lead-free and fully RoHS-compliant (2011/65/EU), with halogen-free molding compound and matte tin (Sn) lead finish. The "ERE2" suffix explicitly denotes Infineon's standard green, lead-free, and halogen-free product marking.