Infineon Technologies CY9BF315NPQC-G-JNE2

Overview

CY9BF315NPQC-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller with 512 KB MainFlash, 32 KB WorkFlash, 64 KB SRAM, USB 2.0 Full-Speed device/host interface, and integrated motor control timers. It operates up to 144 MHz, includes MPU, NVIC with 48 peripheral interrupts, and supports LIN 2.1, I²C, UART, and CSIO on eight serial channels - deployed in industrial motor drives and embedded motion controllers.

For engineers reviewing the CY9BF315NPQC-G-JNE2 datasheet, CY9BF315NPQC-G-JNE2 pinout, CY9BF315NPQC-G-JNE2 application, or CY9BF315NPQC-G-JNE2 equivalent, key selection criteria include Flash memory partitioning (MainFlash/WorkFlash), dual-bus SRAM architecture (SRAM0/SRAM1), USB endpoint configuration (6 endpoints, 256-byte EP1), QPRC for encoder feedback, and 12-bit ADC with 1.0 µs conversion at 5 V.

Technical Context

This MCU implements a dual-Flash architecture: MainFlash (512 KB, zero-wait up to 72 MHz, accelerated beyond) and WorkFlash (32 KB, wait-state dependent on frequency). Its memory subsystem uses separate I-code/D-code buses for SRAM0 (32 KB) and System bus for SRAM1 (32 KB), enabling concurrent CPU and DMA access.

The peripheral set targets real-time motor control: three multi-function timers with dead-time insertion and DTIF interrupt, three QPRC channels for quadrature decoding, and six A/D converter units (12-bit, 1.0 µs @ 5 V) with priority/scanning modes and FIFO buffering - all synchronized via hardware triggers from timer compare events.

Key Specifications

Pinout & Package

Package: 120-pin LQFP (20 mm × 20 mm, 0.4 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303VCT6 and RA6M3GFP, CY9BF315NPQC-G-JNE2 uniquely combines dual-Flash partitioning, three QPRC channels, and USB dual-role in a single 120-pin LQFP package - delivering higher integration for cost-sensitive, encoder-driven motor control applications.

Availability

CY9BF315NPQC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, smart power tool controllers, and industrial PLC I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for CY9BF315NPQC-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 German semiconductor manufacturer specializing in power management, automotive MCUs, and industrial control solutions, with global R&D and manufacturing infrastructure.

This part belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for cost-optimized, high-reliability embedded motor control and industrial automation applications requiring integrated analog, timing, and communication peripherals.

FAQ

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

The CY9BF315NPQC-G-JNE2 achieves up to 144 MHz core frequency using its built-in Main PLL, which multiplies an external 4–48 MHz crystal input. The Flash accelerator enables zero-wait-state execution up to 72 MHz; above that, the accelerator maintains effective performance by prefetching and buffering instructions, preserving deterministic timing for real-time control tasks.

Does this MCU support USB device and host mode simultaneously?

No - the USB interface supports device mode and host mode, but not concurrently. Mode selection is configured at initialization via the USBPHYCR register. Device mode uses the internal USB transceiver with DP/DM pins; host mode requires external VBUS detection and overcurrent sensing circuitry, and disables device enumeration functionality during operation.

How many independent A/D converters are implemented and what is their resolution?

This MCU integrates three independent 12-bit successive approximation register (SAR) A/D converters, supporting up to 16 input channels total. Each converter has a guaranteed conversion time of 1.0 µs at 5 V supply, with built-in FIFO buffers (16-step for scanning, 4-step for priority mode) and hardware trigger synchronization from timer compare events.

Is the QPRC capable of handling high-speed encoder signals?

Yes - each of the three QPRC channels accepts A/B/Z inputs with configurable edge detection (rising/falling/both), and operates synchronously with the peripheral clock domain. With 16-bit position counters and programmable filtering, it reliably captures encoder pulses up to several hundred kHz, sufficient for 10,000-line encoders rotating at 6,000 RPM.