Infineon Technologies CY9BF318SPMC-GK7E1

Overview

CY9BF318SPMC-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 up to 144 MHz, supports 2.7–5.5 V supply, and targets embedded motor control and industrial automation systems.

For engineers reviewing the CY9BF318SPMC-GK7E1 datasheet, CY9BF318SPMC-GK7E1 pinout, CY9BF318SPMC-GK7E1 application, or CY9BF318SPMC-GK7E1 equivalent, key selection criteria include Flash/SRAM size, USB dual-role capability, 144 MHz Cortex-M3 performance, integrated motor timing peripherals (QPRC, PPG, DTIF), and 5 V-tolerant I/O support in LQFP-176 package.

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), two internal CR oscillators (4 MHz / 100 kHz), and Main PLL - enabling dynamic switching and robust clock supervision via CSV.

The peripheral set is optimized for real-time motor control: three QPRC channels measure encoder position/revolution with configurable A/B/Z input edges; three multi-function timer units provide PWM, dead-time insertion (DTIF), A/D activation triggers, and waveform generation; and dual USB channels support simultaneous device (6 endpoints, double-buffered) and host (Full/Low-speed, auto-connect detection) operation.

Key Specifications

Pinout & Package

LQFP-176 (24 × 24 mm, 0.5 mm pitch) with 154 fast GPIOs, 5 V-tolerant pins on selected I/Os, and dedicated power/ground distribution for analog, digital, USB, and external bus domains.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit motor control microcontroller applications.

Compared with STM32F303RET6 and RA6M3GFP, CY9BF318SPMC-GK7E1 uniquely combines USB dual-role, QPRC with ZIN indexing, LIN 2.1, and hardware CRC in a single LQFP-176 package - reducing external components for compact motor control and gateway designs.

Availability

CY9BF318SPMC-GK7E1 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, PLC I/O expansion, and USB-capable industrial gateways requiring stable component supply and long-term lifecycle support.

Supply support for CY9BF318SPMC-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 German semiconductor leader specializing in power management, automotive MCUs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.

This part belongs to the FM3 family of high-performance 32-bit microcontrollers designed specifically for cost-sensitive, real-time embedded motor control and industrial automation applications requiring integrated analog, timing, and communication peripherals.

FAQ

What is the maximum operating frequency and supported voltage range?

CY9BF318SPMC-GK7E1 operates up to 144 MHz with a core supply range of 2.7–5.5 V. USB I/O requires 3.0–3.6 V on USBVCC0/1 pins when enabled. The internal main PLL supports input clocks from 4–48 MHz, and the low-speed sub-clock (32.768 kHz) enables RTC and wake-up functionality in STOP mode.

Does this MCU support USB device and host modes simultaneously?

Yes - it integrates two independent USB 2.0 interfaces: Channel 0 supports Full-Speed device mode (6 endpoints, double-buffered), and Channel 1 supports Full/Low-Speed host mode with automatic device connect/disconnect detection, IN/OUT token handling, and 256-byte packet support - enabling true dual-role operation without external switches.

How many encoder interface channels does it provide, and what features do they include?

It includes three independent Quadrature Position/Revolution Counter (QPRC) channels. Each supports 16-bit position and revolution counters, two 16-bit compare registers, and configurable edge detection on AIN/BIN/ZIN pins. ZIN enables absolute position reset, and overflow/interrupt events can trigger ADC conversions or PWM reloads.

Is there hardware support for CRC calculation, and which polynomials are implemented?

Yes - a dedicated CRC accelerator supports CCITT CRC16 (polynomial 0x1021) and IEEE-802.3 CRC32 (polynomial 0x04C11DB7). It operates independently of the CPU, accepts byte/half-word/word data, and is used for verifying firmware images, Modbus RTU packets, and flash integrity checks during boot.