Infineon Technologies CY9BF312NPMC-G-JNE2

Overview

CY9BF312NPMC-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. Used in industrial motor drives requiring real-time PWM, A/D conversion, and encoder position feedback.

For engineers reviewing the CY9BF312NPMC-G-JNE2 datasheet, CY9BF312NPMC-G-JNE2 pinout, CY9BF312NPMC-G-JNE2 application, or CY9BF312NPMC-G-JNE2 equivalent, key selection criteria include Flash/SRAM partitioning, USB dual-role capability, QPRC support for quadrature decoding, 12-bit ADC timing (1.0 µs @ 5 V), and 5 V-tolerant GPIO allocation across 120-pin LQFP package.

Technical Context

This MCU implements a dual-bank Flash architecture-MainFlash (512 KB, zero-wait up to 72 MHz + Flash Accelerator for >72 MHz) and WorkFlash (32 KB, wait-state dependent on frequency)-enabling safe firmware updates and code/data separation. The memory subsystem includes two independent SRAM banks (SRAM0: 32 KB on I/D bus; SRAM1: 32 KB on system bus) for deterministic interrupt latency and DMA concurrency.

The peripheral set targets motion control: three Multi-function Timers provide PWM, dead-time insertion, DC chopper waveform generation, and A/D trigger synchronization; three QPRC units accept A/B/Z encoder inputs with 16-bit position/revolution counters and dual compare registers; and the USB module integrates dedicated PLL, dual-mode (device/host), and endpoint buffering (EP1: 256-byte, EP0–5: 64-byte).

Key Specifications

Pinout & Package

CY9BF312NPMC-G-JNE2 is housed in a 120-pin LQFP (14 mm × 14 mm, 0.4 mm pitch) package with exposed thermal pad. Pin functions are fully relocatable via port relocation registers, supporting flexible PCB layout and signal routing optimization.

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, CY9BF312NPMC-G-JNE2 delivers dedicated QPRC hardware, dual-bank Flash for robust firmware updates, and native USB host capability-making it optimal for cost-sensitive, encoder-intensive motor control where deterministic position processing and field-upgradable firmware are critical.

Availability

CY9BF312NPMC-G-JNE2 is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controller I/O modules, automated HVAC systems, and medical infusion pumps requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.

Supply support for CY9BF312NPMC-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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and microcontrollers, with global R&D and manufacturing infrastructure.

CY9BF312NPMC-G-JNE2 belongs to the FM3 family of 32-bit Arm Cortex-M3 microcontrollers, designed specifically for cost-optimized, real-time industrial control applications demanding integrated motor timing, analog acquisition, and multi-protocol communication.

FAQ

What is the maximum operating frequency and associated voltage range for CY9BF312NPMC-G-JNE2?

The CY9BF312NPMC-G-JNE2 operates up to 144 MHz at VCC = 4.5–5.5 V. At lower voltages (2.7–4.5 V), maximum frequency is reduced per datasheet Section 12.2: 120 MHz at 3.6–4.5 V, 100 MHz at 3.0–3.6 V, and 72 MHz at 2.7–3.0 V. These limits are enforced by internal voltage-frequency scaling logic to ensure timing compliance.

Does CY9BF312NPMC-G-JNE2 support USB device and host modes simultaneously?

No, the USB module operates in either device or host mode at runtime-not concurrently. Mode selection is configured via USBCTL register bits at initialization. Switching requires software reinitialization and reset of USB-related peripherals; shared resources like the USB PLL and endpoint buffers prevent true simultaneous dual-role operation.

How many independent 12-bit ADC units does CY9BF312NPMC-G-JNE2 contain, and what is their conversion throughput?

The device integrates three independent 12-bit successive approximation register (SAR) ADC units. Each achieves 1.0 µs conversion time at 5 V supply, enabling up to 1 MSPS per unit. Total analog input channels are 16, with configurable priority and scanning modes supported across all three units, and dedicated FIFOs (16-step for scan, 4-step for priority) to reduce CPU overhead.

Is the QPRC functionality hardware-accelerated, and can it operate during low-power modes?

Yes, QPRC is fully hardware-accelerated with dedicated counters and comparators per channel. It remains active in Sleep and Timer low-power modes but is disabled in Stop mode. Position and revolution counts persist across Sleep entry/exit, and QPRC interrupt requests (e.g., compare match or overflow) can wake the CPU from Sleep mode without full system restart.