Infineon Technologies CY9BF314NPMC-G-JNE2

Overview

CY9BF314NPMC-G-JNE2 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller in the FM3 family, designed for motor control and industrial embedded systems. It operates up to 144 MHz, integrates 512 KB MainFlash with accelerator, 32 KB WorkFlash, 64 KB SRAM (split into SRAM0/SRAM1), and features USB 2.0 Full-Speed Device/Host, 12-bit ADC (16 ch, 1.0 µs conversion), and dedicated motor control peripherals including QPRC, multi-function timers, and DTIF interrupt.

For engineers reviewing the CY9BF314NPMC-G-JNE2 datasheet, CY9BF314NPMC-G-JNE2 pinout, CY9BF314NPMC-G-JNE2 application, or CY9BF314NPMC-G-JNE2 equivalent, key selection criteria include Flash memory partitioning (MainFlash + WorkFlash), dual-bus SRAM architecture, USB host/device coexistence, LIN 2.1 support, and 5 V-tolerant GPIO allocation across 120-pin LQFP.

Technical Context

This MCU implements the Arm Cortex-M3 r2p1 core with MPU and NVIC supporting 48 peripheral interrupts and 16 priority levels. Its memory subsystem uses separate I-code/D-code buses for SRAM0 and system bus for SRAM1, enabling concurrent CPU and DMA access without contention.

The peripheral set is optimized for real-time motor control: three QPRC channels track encoder position/revolution; multi-function timers provide PWM, dead-time insertion, and A/D activation triggers; and DTIF enables hardware-initiated emergency stop on fault detection - all operating deterministically under SysTick and RTC supervision.

Key Specifications

Pinout & Package

This device is housed in a 120-pin LQFP package (14 mm × 14 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are fully relocatable via port mapping registers, and up to 103 pins support fast general-purpose I/O with per-pin pull-up control and direct level read capability. Specific pins are 5 V tolerant - refer to "List of Pin Functions" in datasheet section 4 for exact assignment.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303VCT6 and RA6M3GFP, CY9BF314NPMC-G-JNE2 uniquely combines USB host/device, QPRC, DTIF, and dual Flash/SRAM banks in a single chip - delivering lower latency, reduced software complexity, and higher functional safety readiness for motor-centric designs.

Availability

CY9BF314NPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body controllers, PLC I/O modules, and smart energy monitoring devices requiring stable component supply and long-term lifecycle support.

Supply support for CY9BF314NPMC-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, automotive MCUs, and security solutions.

This part belongs to the FM3 microcontroller product line - engineered specifically for cost-sensitive, high-reliability industrial and automotive applications demanding integrated motor control, robust communication, and low-power operation.

FAQ

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

The CY9BF314NPMC-G-JNE2 achieves up to 144 MHz using its internal Main PLL, which multiplies the input main clock (4–48 MHz) with programmable dividers/multipliers. The Flash accelerator ensures zero-wait-state execution at ≤72 MHz and maintains effective throughput above that via prefetch and trace buffering - verified in the Electrical Characteristics table (Section 12.4).

Does this MCU support USB device and host simultaneously?

Yes - the integrated USB interface supports concurrent Full-Speed Device and Host operation. It includes separate endpoint buffers, dual-mode PHY control logic, and independent USB clocks derived from the Main PLL. The datasheet confirms simultaneous use in Section 3.3 ("USB Interface") and Figure 8-1 (Block Diagram), with no shared resource conflict between modes.

How does the DTIF (Motor Emergency Stop) function operate?

DTIF is an asynchronous, level-sensitive input that immediately disables all PWM outputs, clears timer counters, and asserts a dedicated interrupt. It operates independently of CPU clock state and remains active in Sleep and Timer low-power modes. The hardware path bypasses software polling, ensuring <100 ns response - detailed in Section 15.4.3 of the FM3 Peripheral Manual.

Is the WorkFlash memory suitable for EEPROM emulation?

Yes - the 32 KB WorkFlash supports individual sector erase (1 KB sectors) and byte/word programming, with endurance rated for ≥100,000 write/erase cycles. Its separate security settings and wait-state behavior (0-cycle up to 40 MHz) make it ideal for storing calibration data, configuration parameters, or firmware update staging - confirmed in Section 2.2.2 of the datasheet.