Infineon Technologies CY9BF566KPMC-G-JNE2

Overview

CY9BF566KPMC-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M4F microcontroller with FPU, 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 operates up to 160 MHz and targets industrial motor drives and embedded control systems requiring real-time precision, code security, and mixed-signal integration.

For engineers reviewing the CY9BF566KPMC-G-JNE2 datasheet, CY9BF566KPMC-G-JNE2 pinout, CY9BF566KPMC-G-JNE2 application, or CY9BF566KPMC-G-JNE2 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 64-pin LQFP package with 48 high-speed GPIOs and 5 V-tolerant pins.

Technical Context

This MCU implements a tightly coupled Arm Cortex-M4F core (r0p1) with Memory Protection Unit (MPU) and NVIC supporting 128 peripheral interrupts across 16 priority levels. Its clock system integrates five sources - including 4–48 MHz main oscillator, 32.768 kHz sub-clock, and PLL - with Clock Supervisor (CSV) for external oscillator failure detection and Low-Voltage Detector (LVD) with dual-threshold reset/interrupt capability.

The peripheral subsystem features a 128-channel DSTC for CPU-offload data movement, 8-channel DMA, dual 12-bit ADCs with FIFO-based scanning/priority modes, two R-2R 12-bit DACs, and a dedicated Multi-Function Timer unit offering 6.25 ns resolution, dead-time insertion, and A/D activation triggers - all optimized for closed-loop motor control and deterministic real-time response.

Key Specifications

Pinout & Package

64-pin LQFP (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; pin-compatible with CY9B560L series; supports VCC = 2.7–5.5 V, USBVCC = 3.0–3.6 V (USB mode), and 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 RA6M5DBGL, CY9BF566KPMC-G-JNE2 delivers superior motor control integration via QPRC, dead-time PWM, and LIN/CAN coexistence - reducing BOM count and PCB area - while maintaining competitive compute density and Flash/SRAM balance for cost-sensitive industrial designs.

Availability

CY9BF566KPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body controllers, smart energy meters, and programmable logic controller I/O modules requiring stable component supply, long-term lifecycle support, and qualified automotive-grade variants.

Supply support for CY9BF566KPMC-G-JNE2 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, sensor solutions, and microcontrollers for industrial, automotive, and IoT applications.

This device belongs to the FM4 family of high-performance 32-bit microcontrollers designed specifically for real-time industrial automation, motor control, and automotive body electronics - emphasizing peripheral integration, functional safety readiness, and robustness under extended temperature and voltage ranges.

FAQ

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

The CY9BF566KPMC-G-JNE2 achieves up to 160 MHz via its internal Main PLL, which accepts input from the 4–48 MHz main oscillator. The Flash Accelerator with 16 KB trace buffer enables zero-wait-state execution up to 72 MHz and maintains effective performance beyond that by prefetching and caching instructions. The Cortex-M4F core's Harvard bus architecture and MPU further sustain deterministic timing at full speed.

Does this MCU support CAN FD or only classical CAN?

This MCU supports only Classical CAN per ISO 11898-1:2015 (CAN 2.0A/B), with a maximum bit rate of 1 Mbps and 32 message buffers. It does not implement CAN FD features such as flexible data-rate, extended data length (up to 64 bytes), or BRS bit. For CAN FD requirements, external transceivers paired with software-managed protocol stacks or alternative MCUs like Infineon's AURIX TC3xx series would be necessary.

How is code protection implemented in the on-chip Flash?

Code protection is implemented through hardware-enforced security functions shared between MainFlash and WorkFlash. These include lock bits preventing read-out of Flash contents via debug interfaces (SWJ-DP), write-protection regions configurable per sector, and boot vector remapping to prevent unauthorized firmware execution. The security model complies with Infineon's FM4 security guidelines and supports secure bootloader authentication during field updates.

Can the USB interface operate in both device and host mode simultaneously?

No, the USB interface cannot operate in device and host mode simultaneously. It supports either USB device mode (with up to 6 endpoints, including 256-byte EP1) or USB host mode (supporting Full/Low-speed devices, automatic connect/disconnect detection, and 256-byte packet length), selected at runtime via configuration registers. Switching between modes requires reinitialization of the USB controller and associated PHY settings, making concurrent operation unsupported in hardware.