Infineon Technologies CY9BF114NBGL-G-F4K9E1

Overview

CY9BF114NBGL-G-F4K9E1 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-M3 microcontroller designed for high-performance embedded motor control and industrial automation. It operates up to 144 MHz, integrates 512 KB MainFlash with accelerator, 32 KB WorkFlash, 64 KB SRAM (split into SRAM0/SRAM1), and features dual watchdog timers, hardware CRC accelerator, and LIN 2.1/UART/I²C/CSIO interfaces. It is used in brushless DC motor drives requiring real-time PWM, QPRC position feedback, and fault-safe reset supervision.

For engineers reviewing the CY9BF114NBGL-G-F4K9E1 datasheet, CY9BF114NBGL-G-F4K9E1 pinout, CY9BF114NBGL-G-F4K9E1 application, or CY9BF114NBGL-G-F4K9E1 equivalent, key selection criteria include Flash memory partitioning (MainFlash + WorkFlash), dual watchdog independence (HW vs SW clock domains), 12-bit ADC conversion time (1.0 µs @ 5 V), QPRC channel count (3), and 120-pin LQFP package compatibility with external bus interface support.

Technical Context

This MCU implements a dual-domain clock system with five sources - including 4–48 MHz main oscillator, 32.768 kHz sub-clock, and two internal CR oscillators - enabling robust clock supervision (CSV) and low-power mode transitions (Sleep/Timer/Stop). Its memory subsystem uses separate I-code/D-code buses for SRAM0 and a system bus for SRAM1, optimizing core instruction fetch and peripheral data access concurrency.

The peripheral set is purpose-built for motion control: three multi-function timers provide PWM, PPG, dead-time insertion, and A/D activation triggers; three QPRC channels directly interface quadrature encoders; and LIN 2.1 support enables automotive-grade communication with break field programmability (13–16 bit) and slave/master operation.

Key Specifications

Pinout & Package

Package: 120-pin LQFP (14 mm × 14 mm, 0.4 mm pitch), RoHS-compliant, moisture sensitivity level 3. Pin functions include dedicated QPRC inputs (AIN/BIN/ZIN), motor timer outputs (PWMx), LIN transceiver pins (LINRX/LINTX), and external bus signals (A0–A24, D0–D15, CS0–CS7).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303VCT6 and RA4M2, CY9BF114NBGL-G-F4K9E1 uniquely combines LIN 2.1 hardware, triple QPRC, and dual watchdogs in a single 120-pin LQFP package - delivering higher functional integration for cost-sensitive motor control and automotive body electronics without external timing or safety components.

Availability

CY9BF114NBGL-G-F4K9E1 is available at Aetrix Electronics and suitable for brushless DC motor drives, industrial PLC I/O modules, automotive body control units, and smart power metering gateways requiring stable component supply across long-lifecycle industrial programs.

Supply support for CY9BF114NBGL-G-F4K9E1 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 R&D infrastructure.

The CY9B110R series - now part of Infineon's FM3 family - was engineered specifically for cost-effective, high-reliability motor control and industrial automation, emphasizing integrated timing, safety, and mixed-signal peripherals in a single-chip solution.

FAQ

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

The CY9BF114NBGL-G-F4K9E1 achieves up to 144 MHz via its main PLL, which accepts input from either the 4–48 MHz external crystal oscillator or the 4 MHz internal CR oscillator. The PLL's multiplication factor and post-divider settings are configured in software, and the Flash Accelerator ensures zero-wait-state execution at full speed by caching frequently accessed instructions and data.

Does this MCU support hardware LIN communication without external transceivers?

Yes - the MCU integrates a LIN 2.1-compliant physical layer with dedicated LINTX and LINRX pins. It supports automatic sync-break generation (13–16 bit), checksum calculation, and frame filtering in hardware. An external LIN transceiver is still required for bus-level voltage level shifting and ESD protection, but protocol handling is fully on-chip.

How does the dual Flash architecture improve firmware update safety?

MainFlash (512 KB) holds the active application, while WorkFlash (32 KB) serves as a dedicated, protected region for storing updated firmware images or configuration data. Code protection is shared between them, and the bootloader can validate and copy new firmware into WorkFlash while the system runs from MainFlash - enabling atomic, fail-safe updates without runtime interruption.

What power modes are supported and which peripherals remain active in Stop mode?

The MCU supports Sleep, Timer, and Stop modes. In Stop mode, the CPU and most clocks halt, but the sub-clock (32.768 kHz) remains active to drive the RTC and Watch Counter. The hardware watchdog (clocked by low-speed CR oscillator) also stays operational, allowing wake-up via RTC alarm or external interrupt while maintaining safety supervision - critical for battery-backed industrial systems.