Infineon Technologies CY9BF565LQN-G-AVE2

Overview

CY9BF565LQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M4F microcontroller with FPU, 160 MHz max clock, 512 KB MainFlash + 32 KB WorkFlash, 64 KB SRAM (32+16+16), and integrated USB 2.0 Full-Speed device/host, CAN 2.0B, six multi-function serial interfaces (UART/CSIO/LIN/I²C), and motor control peripherals. It targets industrial motor drives and embedded control systems requiring real-time precision, code security, and mixed-signal integration.

For engineers reviewing the CY9BF565LQN-G-AVE2 datasheet, CY9BF565LQN-G-AVE2 pinout, CY9BF565LQN-G-AVE2 application, or CY9BF565LQN-G-AVE2 equivalent, key selection criteria include its dual Flash architecture with trace buffer, 12-bit ADC (0.5 µs conversion), QPRC encoder interface, RTC with leap-year support, and 5 V-tolerant GPIO on 64-pin LQFP package.

Technical Context

This MCU implements a tightly coupled Arm Cortex-M4F core with Memory Protection Unit (MPU), NVIC supporting 128 peripheral interrupts, and SysTick timer for RTOS scheduling. Its dual-bank Flash architecture enables secure over-the-air updates and background read-while-write operation via dedicated Flash Accelerator with 16 KB trace buffer.

The peripheral subsystem integrates time-critical motor control functions-including Multi-Function Timers with dead-time insertion, DTIF emergency stop, A/D activation compare, and quadrature encoder input-alongside communication redundancy via dual CAN and six configurable serial channels supporting LIN 2.1, I²C Fast Mode Plus (1 Mbps), and high-speed SPI on dedicated CSIO channels.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, with 48 high-speed GPIO pins, 5 V-tolerant I/O on designated pins, and dedicated power domains (VCC, USBVCC, VBAT).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit Arm Cortex-M4F microcontroller applications.

Compared with STM32H743VI and RA6M5GFP, CY9BF565LQN-G-AVE2 delivers optimal balance of motor control specialization (QPRC, DTIF, multi-timer sync), communication flexibility (CAN+LIN+USB host/device), and cost-effective dual-Flash security - making it ideal for mid-tier industrial drives where peripheral integration outweighs raw clock speed.

Availability

CY9BF565LQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial motor drives, smart building controllers, automated test equipment, and energy monitoring gateways requiring stable component supply, long-term lifecycle support, and qualified automotive-grade reliability.

Supply support for CY9BF565LQN-G-AVE2 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 industrial control solutions.

This device belongs to the FM4 family of high-performance 32-bit microcontrollers designed specifically for industrial automation, motor control, and real-time embedded systems demanding deterministic timing, functional safety readiness, and mixed-signal integration.

FAQ

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

The CY9BF565LQN-G-AVE2 achieves 160 MHz maximum core frequency using the internal Main PLL driven by an external 4–48 MHz crystal. The PLL output feeds the CPU, memory, and peripheral clocks. Flash Accelerator eliminates wait states up to 72 MHz and maintains equivalent performance above that via prefetch and trace buffer - confirmed in Section 12.1 of datasheet 002-04922 Rev. *C.

Does this MCU support USB device and host simultaneously?

No - the USB interface supports device mode and host mode, but not simultaneous dual-role operation. Device mode uses endpoints 0–5 with 256-byte EP1 buffer for control/bulk transfers; host mode supports up to 256-byte packets and automatic device connect/disconnect detection. Mode selection is configured at initialization via USB registers per Section 14.3 of the peripheral manual.

How does the dual Flash architecture enhance firmware security?

MainFlash stores application code with write-protection and read-out prevention; WorkFlash holds configuration data, calibration tables, or bootloader code with separate lock bits. This separation prevents malicious overwrite of critical firmware while allowing safe field updates - implemented via Flash Security Registers (FSR) and verified in the Security section of the datasheet.

Is the QPRC interface compatible with standard incremental encoders?

Yes - the Quadrature Position/Revolution Counter accepts standard A/B/Z phase signals from TTL- or open-collector incremental encoders. AIN/BIN detect rising/falling edges with programmable polarity; ZIN resets the 16-bit revolution counter. Maximum input frequency is 10 MHz, supporting encoder resolutions up to 10,000 PPR at 600 RPM - specified in Table 12-11 (Electrical Characteristics).