Infineon Technologies MB91F524KWCPMC-GSK5E2

Overview

MB91F524KWCPMC-GSK5E2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S RISC microcontroller designed for automotive powertrain and body control units. It features an 80 MHz CPU, 512 KB + 64 KB program flash, 64 KB main RAM + 8 KB backup RAM, IEEE 754-compliant FPU, and triple CAN 2.0B controllers supporting up to 1 Mbps. It operates across −40 °C to +125 °C with 5 V supply and integrated voltage regulation.

For engineers reviewing the MB91F524KWCPMC-GSK5E2 datasheet, MB91F524KWCPMC-GSK5E2 pinout, MB91F524KWCPMC-GSK5E2 application, or MB91F524KWCPMC-GSK5E2 equivalent, key selection criteria include its 120-pin LQFP package, dual 12-bit ADC (max 48 channels), LIN 2.1 support across 12 serial interfaces, hardware CRC, memory protection unit (MPU), and automotive-grade temperature and reset supervision.

Technical Context

The MB91F524KWCPMC-GSK5E2 implements the FR81S core-a 5-stage pipelined 32-bit RISC architecture with 16×32-bit general-purpose registers, 16-bit fixed-length instructions, and single-cycle execution for basic operations. It integrates a PLL clock multiplier (1×–20×) enabling 80 MHz operation from a 4 MHz crystal, plus a 100 kHz CR oscillator and sub-clock (32 kHz) supervision circuitry.

Peripheral integration includes three independent CAN controllers (128/64 message buffers per channel), 12 multi-function serial channels supporting UART/LIN/CSIO/I²C, a 16-bit PPG subsystem with 48 channels, and dual 12-bit successive-approximation ADCs delivering 1.4 μs conversion time. All memory blocks feature ECC protection, and the MPU enforces eight configurable access-protected regions.

Key Specifications

Pinout & Package

This device is housed in a 120-pin LQFP package (14 mm × 14 mm, 0.4 mm pitch) with exposed thermal pad, compliant with JEDEC MO-220 and RoHS requirements. Pin functions are defined per CY91520 Series datasheet Rev. *I, pages 12–17.

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 MB91F524KWCPMC-GSK5E2 delivers unique value in legacy FR-family code reuse, integrated PPG-based motor drive timing, and sub-μs ADC sampling synchronization-critical for retrofitting existing automotive platforms without architectural overhaul.

Availability

MB91F524KWCPMC-GSK5E2 is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, and body control modules requiring stable component supply across extended automotive product lifecycles.

Supply support for MB91F524KWCPMC-GSK5E2 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 AG is a German semiconductor manufacturer specializing in power management, automotive MCUs, and security solutions, with global R&D and manufacturing infrastructure.

The CY91520 series-now part of Infineon's automotive MCU portfolio-was originally developed by Cypress to address high-integrity, real-time control needs in powertrain and chassis systems, emphasizing functional safety, mixed-signal integration, and long-term supply stability.

FAQ

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

The MB91F524KWCPMC-GSK5E2 achieves 80 MHz maximum CPU frequency using its on-chip PLL with multiplication factor up to ×20, driven by a 4.0 MHz external crystal. The minimum instruction execution time is 12.5 ns. This configuration is validated across the full −40 °C to +125 °C temperature range and requires proper PCB layout for the PLL loop filter per Section 6.2 of the datasheet.

Does this MCU support functional safety standards like ISO 26262?

Yes-the MB91F524KWCPMC-GSK5E2 includes hardware safety features required for ASIL-B development: memory ECC (flash and RAM), lockstep-capable peripherals (CAN, ADC), clock and voltage supervisors with failover to CR oscillator, and a programmable MPU. It is AEC-Q100 Grade 1 qualified, and Infineon provides safety manuals and FMEDA reports under NDA for certified automotive programs.

How many CAN interfaces does it have, and what are their message buffer capacities?

The device integrates three independent CAN 2.0B controllers. Channel 0 supports 128 message buffers (64 transmit + 64 receive), while Channels 1 and 2 each support 64 message buffers (32 transmit + 32 receive). All channels operate up to 1 Mbps and support mailbox-based filtering, automatic retransmission, and error confinement per ISO 11898-1.

Is the 120-pin LQFP package lead-free and RoHS-compliant?

Yes-the MB91F524KWCPMC-GSK5E2 uses a lead-free, halogen-free 120-pin LQFP package (package code WCPMC) meeting RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3. The thermal pad is electrically connected to VSS and must be soldered to a PCB thermal plane per Infineon's mounting guidelines in Package Drawing LQH120.