Infineon Technologies CY9BF566LQN-G-AVE2

Overview

CY9BF566LQN-G-AVE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M4F microcontroller with FPU, 160 MHz max CPU frequency, 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, and motor control timers. It targets industrial motor drives requiring real-time PWM, A/D conversion, and position feedback.

For engineers reviewing the CY9BF566LQN-G-AVE2 datasheet, CY9BF566LQN-G-AVE2 pinout, CY9BF566LQN-G-AVE2 application, or CY9BF566LQN-G-AVE2 equivalent, key selection criteria include dual Flash architecture with security protection, 15-channel 12-bit ADC with 0.5 μs conversion time, QPRC for encoder interfacing, RTC with leap-year support, and 64-pin LQFP package with 48 high-speed GPIOs and 5 V-tolerant pins.

Technical Context

This MCU implements a dual-bus memory subsystem: I-code/D-code buses connect to SRAM0 (32 KB), while System bus connects SRAM1/SRAM2 (16 KB each). Its DSTC (128-channel descriptor-based DMA) offloads CPU for high-throughput peripheral-to-memory transfers without software intervention.

The clock system integrates five sources - main oscillator (4–48 MHz), sub-clock (32.768 kHz), two internal CR oscillators (4 MHz / 100 kHz), and Main PLL - with Clock Supervisor (CSV) monitoring external oscillator failure or frequency anomaly via interrupt or reset assertion.

Key Specifications

Pinout & Package

Package: 64-pin LQFP (10 mm × 10 mm, 0.5 mm pitch), RoHS-compliant, with 48 high-speed general-purpose I/O ports, 5 V-tolerant pins on selected functions (e.g., UART, CSIO), and dedicated VBAT supply for RTC retention.

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, CY9BF566LQN-G-AVE2 delivers superior integration for motion control: dedicated QPRC, motor timer with DTIF, dual Flash for robust OTA, and USB device/host coexistence - all in a cost-optimized 64-pin LQFP without requiring external glue logic.

Availability

CY9BF566LQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial motor drives, automated test equipment, building automation controllers, and energy monitoring gateways requiring stable component supply, long lifecycle support, and qualified automotive-grade reliability.

Supply support for CY9BF566LQN-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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and microcontrollers, with global R&D and manufacturing infrastructure.

CY9BF566LQN-G-AVE2 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 and peripheral integration.

FAQ

What is the maximum operating temperature range for CY9BF566LQN-G-AVE2?

The CY9BF566LQN-G-AVE2 is rated for industrial temperature range: –40 °C to +85 °C ambient, validated per JEDEC JESD22-A104. Thermal derating begins above 70 °C ambient when operating at 160 MHz with full peripheral activation; thermal design must maintain junction temperature ≤125 °C per datasheet Section 12.2.

Does CY9BF566LQN-G-AVE2 support USB device and host simultaneously?

No - the USB interface operates in either device or host mode, selected at runtime via USBMODE register. Simultaneous dual-role operation is not supported. Mode switching requires reinitialization of USB PHY and endpoint configuration; typical use cases assign fixed role per application (e.g., device for PC communication, host for USB flash drive logging).

How many independent clock domains does CY9BF566LQN-G-AVE2 support?

CY9BF566LQN-G-AVE2 supports five clock sources - main oscillator (4–48 MHz), sub-clock (32.768 kHz), high-speed CR (4 MHz), low-speed CR (100 kHz), and Main PLL - with dynamic switching and independent gating per peripheral. The Clock Supervisor monitors main oscillator stability and asserts reset on failure, ensuring fail-safe timing behavior in safety-critical motor control.

Is the WorkFlash memory suitable for EEPROM emulation?

Yes - WorkFlash (32 KB) is explicitly designed for parameter storage and firmware update staging. Its endurance is rated for ≥100,000 erase/write cycles per sector (per datasheet Section 9.2), and it supports sector-level erase with hardware write-protection. Cypress-provided middleware (FM4 Flash Library) includes certified EEPROM emulation routines with wear leveling and atomic update semantics.