Infineon Technologies CY9BF466NPMC-GNE2

Overview

CY9BF466NPMC-GNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M4F microcontroller with 1024 KB Flash, 128 KB SRAM (64+32+32), dual CAN 2.0B interfaces, 24-channel 12-bit ADC (0.5 μs conversion), and operation up to 160 MHz. It integrates motor control timers, SD card interface, RTC, QPRC, and hardware CRC accelerator for industrial motor drives and embedded control systems.

For engineers reviewing the CY9BF466NPMC-GNE2 datasheet, CY9BF466NPMC-GNE2 pinout, CY9BF466NPMC-GNE2 application, or CY9BF466NPMC-GNE2 equivalent, key selection criteria include dual CAN support at 1 Mbps, 160 MHz real-time performance with FPU and MPU, 5 V-tolerant I/O on 120-pin LQFP package, and integrated DSTC for zero-CPU-overhead peripheral data movement.

Technical Context

The CY9BF466NPMC-GNE2 implements an Arm Cortex-M4F core (r0p1) with tightly coupled FPU and Memory Protection Unit (MPU), enabling deterministic real-time execution and memory isolation in safety-critical firmware. Its dual CAN controllers each support 32 message buffers and full CAN 2.0A/B compliance, with bit rates up to 1 Mbps and built-in error detection.

It features a Descriptor-based System Transfer Controller (DSTC) with 128 channels for autonomous peripheral-to-memory transfers, plus a dedicated 8-channel DMA controller-both decoupled from CPU bus access. The multi-function timer subsystem includes A/D activation compare, dead-time insertion, and waveform generation blocks optimized for three-phase motor commutation.

Key Specifications

Pinout & Package

Package: 120-pin LQFP (14 mm × 14 mm, 0.4 mm pitch), RoHS-compliant, moisture sensitivity level 3. Pin functions defined per "Pin Assignment" (Page 10) and "Pin Description" (Page 15) of datasheet 002-04868 Rev. *G.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32H743VIT6 and R7FA6M2AF3CFP, the CY9BF466NPMC-GNE2 delivers unique value in dual-CAN real-time networking, hardware-accelerated descriptor transfers, and integrated motor control peripherals-all within a single 120-pin LQFP package without external glue logic.

Availability

CY9BF466NPMC-GNE2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, smart energy gateways, and factory automation I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for CY9BF466NPMC-GNE2 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.

This device belongs to the FM4 family of high-performance 32-bit microcontrollers designed specifically for real-time industrial control, motor drive, and automotive body electronics applications requiring dual CAN, precision timing, and low-power operation.

FAQ

What is the maximum operating frequency and supported voltage range?

The CY9BF466NPMC-GNE2 operates at up to 160 MHz with a single 2.7–5.5 V supply rail. Its internal PLL generates the core clock from external 4–48 MHz crystals or internal oscillators. All I/O pins are 5 V tolerant only on designated ports (e.g., PA0–PA15, PB0–PB15), as specified in the "I/O Circuit Type" section (Page 44) of datasheet 002-04868 Rev. *G.

Does this MCU support CAN FD or only classical CAN?

This MCU supports only Classical CAN (ISO 11898-1, CAN 2.0A/B) at up to 1 Mbps per channel. It does not implement CAN FD features such as flexible data-rate, extended data length, or CRC21. The two CAN controllers are fully independent, each with 32 message buffers, but neither supports FD frame format or bit-rate switching.

How is the 128 KB SRAM organized and accessible?

The 128 KB SRAM is split into three physically independent banks: 64 KB SRAM0 (connected to I-code/D-code buses for instruction/data caching), and two 32 KB banks-SRAM1 and SRAM2-mapped to the system bus. This separation enables concurrent CPU fetches and DMA/DSTC transfers without bus contention, critical for real-time motor control loops and high-throughput sensor acquisition.

Is the DSTC capable of chaining descriptors across memory regions?

Yes-the Descriptor System Transfer Controller (DSTC) supports chain activation, allowing sequential execution of descriptors stored in non-contiguous memory locations. Each descriptor contains source/destination addresses, transfer size, and next-descriptor pointer. This enables complex data pipelines (e.g., ADC → circular buffer → FFT → SD write) without CPU intervention or fixed memory layout constraints.