Infineon Technologies CY91F522KWCPMC-GSE2

Overview

CY91F522KWCPMC-GSE2 from Infineon Technologies (formerly Cypress) is a 32-bit FR81S automotive microcontroller with 256+64 KB program flash, 48+8 KB RAM, IEEE 754-compliant FPU, and triple CAN 2.0B controllers supporting up to 1 Mbps. It operates at 80 MHz (12.5 ns instruction cycle), features 120 GPIOs, 12-channel multi-serial interface (UART/CSIO/LIN/I²C), and -40°C to +125°C operation for engine control units and ADAS domain controllers.

For engineers reviewing the CY91F522KWCPMC-GSE2 datasheet, CY91F522KWCPMC-GSE2 pinout, CY91F522KWCPMC-GSE2 application, or CY91F522KWCPMC-GSE2 equivalent, key selection criteria include its 176-pin LQFP package, dual 12-bit ADC (max 48 ch), hardware watchdog, memory protection unit (MPU), and integrated RTC with sub-clock calibration-critical for functional safety–compliant automotive firmware development.

Technical Context

The CY91F522KWCPMC-GSE2 implements the FR81S 32-bit RISC core with 5-stage pipeline, Harvard architecture, and instruction compatibility with the broader FR family. It integrates an on-chip PLL enabling 4–16 MHz crystal input multiplication up to 20× (80 MHz system clock), plus a 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 with LIN 2.1 support, and a 16-bit PPG subsystem with 48 channels for LED and timing-critical actuation. Memory subsystem features ECC-protected flash (256+64 KB) and RAM (48+8 KB), plus MPU with eight configurable protection areas for privilege/user mode access control.

Key Specifications

Pinout & Package

Package: 176-pin LQFP (24 × 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 the CY91F522KWCPMC-GSE2, the S32K144 offers higher clock speed and AUTOSAR readiness but requires external clock supervision, while the RH850/F1L delivers CAN FD throughput at the cost of missing integrated LIN and RTC calibration-making the CY91F522 optimal for cost-sensitive, mixed-protocol automotive nodes requiring precision timing and functional safety primitives.

Availability

CY91F522KWCPMC-GSE2 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and electric power steering systems requiring stable component supply across extended automotive lifecycles.

Supply support for CY91F522KWCPMC-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 designed specifically for ASIL-B–capable body, chassis, and powertrain control applications demanding high-integration, functional safety, and long-term supply stability.

FAQ

What is the maximum operating frequency and minimum instruction cycle time of the CY91F522KWCPMC-GSE2?

The CY91F522KWCPMC-GSE2 achieves a maximum system clock of 80 MHz using its on-chip PLL, resulting in a minimum instruction execution time of 12.5 ns. This timing is guaranteed across the full -40°C to +125°C temperature range and 2.7–5.5 V supply, validated per AEC-Q100 stress testing protocols.

Does the CY91F522KWCPMC-GSE2 support CAN FD or only classical CAN 2.0B?

The CY91F522KWCPMC-GSE2 supports only CAN 2.0B protocol (ISO 11898-1) with bit rates up to 1 Mbps. It does not implement CAN FD features such as flexible data-rate or extended data length. Its three CAN controllers are fully compatible with legacy automotive networks requiring classical CAN frame structure and arbitration.

How is the real-time clock (RTC) calibrated for long-term accuracy in automotive environments?

The RTC uses sub-oscillation (32.768 kHz) as its base clock, with calibration achieved by measuring the ratio between the main oscillator (e.g., 4 MHz) and sub-oscillator frequencies. The real-time clock prescaler register adjusts for crystal aging and temperature drift, enabling ±1 ppm accuracy over temperature and lifetime-verified per ISO/IEC 17025 test reports.

Is the CY91F522KWCPMC-GSE2 pin-compatible with other members of the CY91520 series?

No-pin compatibility is limited to same-package variants (e.g., CY91F522K vs. CY91F523K in 176-pin LQFP). Flash/RAM differences (e.g., 256+64 KB vs. 384+64 KB) do not affect pinout, but variants with different pin counts (e.g., 144-pin D or 100-pin F) have distinct assignments and are not interchangeable without PCB redesign.