Infineon Technologies CY9BFD17TBGL-GK7E1

Overview

CY9BFD17TBGL-GK7E1 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 FM3 microcontroller with 1 MB Flash, 128 KB SRAM, dual CAN 2.0A/B interfaces (1 Mbps), dual Ethernet-MAC (10/100 Mbps with MII/RMII), and USB 2.0 Full-Speed device/host support. It targets industrial motor control, factory automation, and embedded gateway applications requiring real-time communication, deterministic timing, and integrated peripheral consolidation.

For engineers reviewing the CY9BFD17TBGL-GK7E1 datasheet, CY9BFD17TBGL-GK7E1 pinout, CY9BFD17TBGL-GK7E1 application, or CY9BFD17TBGL-GK7E1 equivalent, key selection criteria include dual Ethernet-MAC with IEEE 1588-2008 PTP support, 32-channel 12-bit ADC with 1.0 µs conversion time, hardware CRC accelerator (CRC16/CRC32), and 154 GPIO with port relocation in 176-pin LQFP package.

Technical Context

The CY9BFD17TBGL-GK7E1 implements a deterministic real-time architecture centered on the Arm Cortex-M3 r2p1 core running up to 144 MHz, backed by MPU and NVIC supporting 48 peripheral interrupts across 16 priority levels. Its memory subsystem includes two independent SRAM banks (SRAM0/SRAM1, 64 KB each) optimized for instruction/data separation and system bus access.

Peripheral integration is purpose-built for industrial connectivity: dual CAN controllers with 32 message buffers, dual Ethernet-MAC with dedicated 2 KB TX/RX FIFOs and IEEE 1588-2008 timestamping, and multi-protocol serial interface (UART/CSIO/LIN/I²C) configurable per channel. The built-in USB PLL and Ethernet PLL share clock generation logic from the main oscillator or internal CR sources.

Key Specifications

Pinout & Package

This device is housed in a 176-pin LQFP (24 mm × 24 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are fully defined in the CY9BD10T Series datasheet Section 3 (Pin Assignment) and Section 4 (List of Pin Functions), including dedicated USBVCC0/USBVCC1 and ETHVCC supply pins, 154 general-purpose I/Os with 5 V tolerance on selected pins, and port relocation capability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H743VI and RZ/T2M, CY9BFD17TBGL-GK7E1 offers balanced integration of dual CAN, dual Ethernet-MAC with PTP, USB device/host, and LIN-making it optimal for cost-sensitive, protocol-diverse industrial controllers where mixed-fieldbus coexistence is required without external bridge ICs.

Availability

CY9BFD17TBGL-GK7E1 is available at Aetrix Electronics and suitable for industrial motor drives, factory automation gateways, smart building controllers, and energy management systems requiring stable component supply across extended product lifecycles.

Supply support for CY9BFD17TBGL-GK7E1 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, industrial, and security solutions.

The CY9BFD17TBGL-GK7E1 belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for industrial embedded applications demanding high peripheral integration, real-time determinism, and long-term supply stability in harsh environments.

FAQ

What is the maximum operating frequency of the CY9BFD17TBGL-GK7E1 core?

The Arm Cortex-M3 core operates at up to 144 MHz, enabled by the main PLL driven from a 4–50 MHz external crystal or internal oscillator. This frequency is sustained with zero wait states up to 72 MHz via the on-chip Flash Accelerator; above that, the accelerator maintains equivalent performance using its 16 KB trace buffer. The processor version is r2p1, supporting Thumb-2 instruction set and MPU for memory protection.

Does CY9BFD17TBGL-GK7E1 support IEEE 1588-2008 Precision Time Protocol?

Yes, the dual Ethernet-MAC includes full IEEE 1588-2008 (PTP) timestamping capability with hardware support for sync, delay_req, and delay_resp message handling. Each MAC has dedicated timestamp registers and can operate independently in master or slave mode. The PTP engine works with both MII and RMII physical layer interfaces and supports hardware timestamp insertion and extraction at the MAC boundary.

How many analog-to-digital converter channels does this MCU provide, and what is their resolution and speed?

The CY9BFD17TBGL-GK7E1 integrates three 12-bit successive approximation register (SAR) ADC units totaling 32 input channels. Conversion time is 1.0 µs at 5 V supply, with configurable priority levels (2-tier) and scanning mode. Each unit includes dedicated FIFOs: 16-step depth for scan mode and 4-step depth for priority mode, enabling deterministic sampling sequences for motor phase current measurement.

Is USB host functionality supported, and what transfer types are available?

Yes, the MCU supports USB 2.0 Full-Speed and Low-Speed host mode with bulk, interrupt, and isochronous transfer types. It automatically detects device attachment/detachment, handles IN/OUT token handshaking, and supports up to 256-byte packet length. Endpoint configuration is software-defined, and the built-in USB PLL generates the required 48 MHz clock from the main oscillator or internal CR source.