Infineon Technologies CY91F526JSBPMC-GSE2

Overview

CY91F526JSBPMC-GSE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S automotive microcontroller with 1024+64 KB program flash, 128 KB main RAM + 8 KB backup RAM, 80 MHz max CPU frequency, IEEE 754-compliant FPU, and integrated CAN 2.0B controllers (3 channels, up to 1 Mbps). It targets engine control units, battery management systems, and ADAS domain controllers requiring ASIL-B capable timing, memory protection, and real-time I/O.

For engineers reviewing the CY91F526JSBPMC-GSE2 datasheet, CY91F526JSBPMC-GSE2 pinout, CY91F526JSBPMC-GSE2 application, or CY91F526JSBPMC-GSE2 equivalent, key selection criteria include its 176-pin LQFP package, dual-clock supervision (main/sub/CR), 48-channel 12-bit ADC with 1.4 μs conversion, LIN 2.1 support across 12 serial interfaces, and hardware-based memory protection unit (MPU) with eight configurable regions.

Technical Context

The CY91F526JSBPMC-GSE2 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and instruction compatibility with the broader FR family. It integrates on-die PLL (1×–20× multiplication), SSCG clock generation, and three independent CAN controllers-each with dedicated message buffers (128 for ch.0, 64 for ch.1/ch.2).

Peripheral subsystems include a 12-bit successive-approximation ADC (48 channels total), dual 8-bit R-2R DACs, 96 GPIOs (with sub-oscillator enabled), 16-channel DMA, and real-time clock with subclock calibration. Power management supports Sleep/Stop/Watch/Sub RUN modes, with LVD reset thresholds set at 2.8 V ±8% for external supply monitoring.

Key Specifications

Pinout & Package

Package: 176-pin LQFP (24 mm × 24 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 S32K144 and RH850/F1L, CY91F526JSBPMC-GSE2 delivers superior analog integration (48-channel ADC, dual DAC), tighter clock supervision (dual oscillator + CR fallback), and lower-cost CAN 2.0B implementation-making it optimal for cost-sensitive, high-channel-count automotive control nodes without CAN FD requirement.

Availability

CY91F526JSBPMC-GSE2 is available at Aetrix Electronics and suitable for engine control units, battery management systems, and electric power steering modules requiring stable component supply across extended automotive lifecycles.

Supply support for CY91F526JSBPMC-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 German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.

The CY91520 series was developed by Cypress (acquired by Infineon in 2020) specifically for ASIL-B automotive control applications demanding high analog integration, deterministic real-time performance, and robust clock/fault management.

FAQ

What is the maximum operating frequency and associated instruction timing?

The CY91F526JSBPMC-GSE2 achieves a maximum CPU frequency of 80 MHz using its on-chip PLL with 4.0 MHz crystal input multiplied by 20. This yields a minimum instruction execution time of 12.5 ns per basic instruction, confirmed in the datasheet's "Product Lineup" table (Page 5) and electrical characteristics section (Page 133).

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

This device implements CAN 2.0B only, with three fully independent controllers supporting bit rates up to 1 Mbps. It does not support CAN FD features such as flexible data-rate or extended frame formats. The datasheet explicitly lists "CAN" (not "CAN FD") in peripheral descriptions and specifies 64/128 message buffer counts consistent with classical CAN implementations.

How is the real-time clock (RTC) calibrated and what clock sources does it support?

The RTC operates using either the main oscillator (4–16 MHz) or sub-oscillator (32 kHz), with calibration achieved by adjusting the RTC prescaler to correct the main-to-sub clock ratio. This allows accurate timekeeping even with quartz tolerance drift, as documented in Section 1.11 ("Calibration: Real-time clock (RTC) of the subclock drive") on Page 4.

Is the 176-pin LQFP package lead-free and RoHS-compliant?

Yes, the CY91F526JSBPMC-GSE2 uses a lead-free, RoHS-compliant 176-pin LQFP package (package code SBPMC), as specified in the "Package Dimensions" section (Page 218) and ordering information tables (Pages 196–214). Moisture sensitivity level is rated at MSL3 per J-STD-020.