Infineon Technologies CY9BF316SPMC-GK7E1

Overview

CY9BF316SPMC-GK7E1 from Infineon Technologies (formerly Cypress) is a 32-bit ARM® Cortex®-M3 microcontroller with 1 MB Flash, 128 KB SRAM, USB 2.0 Full-Speed Device/Host interface, 32-channel 12-bit ADC (1.0 μs conversion), and motor control peripherals including QPRC, multi-function timers, and PWM. It operates at up to 144 MHz and supports industrial motor drives, embedded PLCs, and smart power tools.

For engineers reviewing the CY9BF316SPMC-GK7E1 datasheet, CY9BF316SPMC-GK7E1 pinout, CY9BF316SPMC-GK7E1 application, or CY9BF316SPMC-GK7E1 equivalent, key selection criteria include Flash/SRAM size, USB dual-role capability, real-time motor control features (QPRC, dead-time insertion), and 2.7–5.5 V operation with LVD/CSV safety monitoring.

Technical Context

This MCU implements the ARM Cortex-M3 r2p1 core with Memory Protection Unit (MPU) and NVIC supporting 48 peripheral interrupts across 16 priority levels. Its clock system integrates five sources - main oscillator (4–48 MHz), sub-clock (32.768 kHz), high-speed/low-speed CR oscillators, and Main PLL - managed by Clock Supervisor (CSV) for external clock failure detection.

The peripheral set includes dual USB channels (Device + Host), eight configurable serial interfaces (UART/CSIO/LIN/I²C), 8-channel DMA, three multi-function timers with A/D activation and waveform generation, and three QPRC units for encoder-based position sensing - all optimized for deterministic real-time control in motion systems.

Key Specifications

Pinout & Package

Package: 176-pin LQFP (24 × 24 mm, 0.5 mm pitch). Pin functions validated per Infineon Document 002-04686 Rev. D "Pin Assignment" and "List of Pin Functions" sections.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6 and RA6M3GFP, CY9BF316SPMC-GK7E1 uniquely integrates QPRC, DTIF, and dual-role USB in a single chip - reducing BOM count and PCB area for encoder-driven motor controllers where deterministic position capture and field-serviceability are critical.

Availability

CY9BF316SPMC-GK7E1 is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and smart power tools requiring stable component supply, long-term lifecycle support, and qualified automotive/industrial grade reliability.

Supply support for CY9BF316SPMC-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 MCUs, and industrial control solutions.

This part belongs to the FM3 family of high-performance 32-bit microcontrollers designed specifically for real-time embedded control in motor drives, factory automation, and energy-efficient industrial equipment.

FAQ

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

The CY9BF316SPMC-GK7E1 achieves up to 144 MHz using its Main PLL, which accepts input from either the 4–48 MHz main oscillator or the 4 MHz high-speed internal CR oscillator. The PLL output drives the core and high-speed peripherals, while Flash Accelerator ensures zero-wait-state execution up to 72 MHz and maintains effective bandwidth beyond that via trace buffer prefetching.

Does this MCU support encoder-based position feedback without external components?

Yes. It integrates three Quadrature Position/Revolution Counter (QPRC) units, each accepting AIN/BIN/ZIN signals with configurable edge detection. Each QPRC provides independent 16-bit position and revolution counters plus two compare registers - enabling direct, hardware-accelerated position tracking from standard incremental encoders without FPGA or discrete logic.

How does the USB interface support both device and host roles simultaneously?

The MCU contains two physically separate USB channels: Channel 0 supports USB 2.0 Full-Speed Device mode (6 endpoints, double-buffered), while Channel 1 supports Full-Speed/Low-Speed Host mode with automatic device connect/disconnect detection, IN/OUT token handling, and 256-byte packet support. Both operate concurrently under independent DMA control, enabling simultaneous firmware updates and peripheral attachment.

What safety and reliability features are built into the chip for industrial use?

It includes Clock Supervisor (CSV) for external oscillator failure detection, dual-stage Low-Voltage Detector (LVD1 interrupt / LVD2 reset), Memory Protection Unit (MPU) for task isolation, hardware watchdog (CR-clocked, active in all modes except STOP), and CRC accelerator supporting CCITT CRC16 and IEEE-802.3 CRC32 - collectively meeting IEC 61508 SIL-2 functional safety requirements for embedded control subsystems.