Infineon Technologies CY9AF314NABGL-GE1

Overview

CY9AF314NABGL-GE1 from Spansion (formerly Fujitsu Semiconductor) is a 32-bit ARM Cortex-M3 microcontroller targeting high-performance, cost-sensitive embedded motor control and industrial automation applications. It operates at up to 40 MHz, integrates 256 KB on-chip Flash and 32 KB SRAM (split into 16 KB SRAM0 + 16 KB SRAM1), and features dual USB 2.0 interfaces (Function + Host), 16-channel 12-bit ADC with scanning mode, and hardware CRC acceleration for CCITT CRC16 and IEEE-802.3 CRC32.

For engineers reviewing the CY9AF314NABGL-GE1 datasheet, CY9AF314NABGL-GE1 pinout, CY9AF314NABGL-GE1 application, or CY9AF314NABGL-GE1 equivalent, key selection considerations include its 100-pin LQFP package, 83 GPIOs with port relocation, QPRC encoder interface, dual watchdog timers (HW + SW), and support for SLEEP/TIMER/STOP low-power modes with sub-clock wake-up capability.

Technical Context

The CY9AF314NABGL-GE1 implements the ARMv7-M architecture (Cortex-M3 r2p1 core) with NVIC supporting 48 peripheral interrupts and 16 priority levels, plus a 24-bit SysTick timer for RTOS scheduling. Its memory subsystem includes zero-wait-state Flash and dual-bus-connected SRAM banks enabling concurrent CPU and DMA access.

Peripheral integration centers on real-time control: eight base timers (PWM/PPG/reload/PWC), two multi-function timers with input capture/output compare/A/D activation, two QPRC units for quadrature encoder position tracking, and a dedicated LIN 2.1 controller with configurable break field (13–16 bit) and delimiter (1–4 bit).

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MB9AF314NABGL-GE1 and STM32F303VCT6, CY9AF314NABGL-GE1 uniquely delivers USB host capability alongside hardware QPRC and LIN 2.1 in a single 100-pin package - critical for cost-constrained industrial controllers requiring both fieldbus connectivity and precise motion feedback without external ICs.

Availability

CY9AF314NABGL-GE1 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, smart energy meters, and PLC I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for CY9AF314NABGL-GE1 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

Spansion - formed from the merger of Fujitsu Semiconductor's microcontroller business and Cypress Semiconductor's flash division - specialized in high-reliability embedded controllers and non-volatile memory solutions before its acquisition by Cypress in 2015.

CY9AF314NABGL-GE1 belongs to the FM3 family of ARM Cortex-M3 microcontrollers, designed specifically for industrial automation and motor control applications demanding integrated timing peripherals, robust fault handling, and mixed-signal precision without external support components.

FAQ

What power supply configurations does CY9AF314NABGL-GE1 require?

The device requires two independent supplies: VCC (2.7–5.5 V) for core logic and general I/O, and USBVCC (3.0–3.6 V) only when the USB PHY is active. When USB is unused, USBVCC may be tied to VCC. The built-in low-speed CR oscillator (100 kHz) powers the hardware watchdog in STOP mode, ensuring fail-safe reset even during deep sleep.

Does CY9AF314NABGL-GE1 support external memory expansion?

No. Unlike MB9AF315/316 variants, CY9AF314NABGL-GE1 explicitly omits the External Bus Interface (EBI). Its 256 KB Flash and 32 KB SRAM are intended to accommodate typical motor control and automation firmware without external memory. Designers requiring NOR Flash or SRAM expansion must select MB9AF315MA/NA or MB9AF316MA/NA instead.

How is the QPRC functionality implemented in this MCU?

CY9AF314NABGL-GE1 integrates two independent Quadrature Position/Revolution Counter (QPRC) units. Each accepts AIN, BIN, and ZIN inputs with configurable edge detection, maintains separate 16-bit position and revolution counters, and provides two 16-bit compare registers for index pulse matching. This enables direct connection to incremental encoders without external logic or FPGA resources.

Can the USB interface operate in both host and device mode simultaneously?

No. The USB controller supports either Function (device) mode or Host mode, selected at runtime via software configuration. Simultaneous dual-role operation is not supported. However, mode switching is possible between resets, allowing a single hardware design to serve as either a USB peripheral (e.g., HID device) or a USB host (e.g., flash drive reader) depending on firmware configuration.