Infineon Technologies CY9AF314LAQN-G-AVE2

Overview

CY9AF314LAQN-G-AVE2 from Spansion (formerly Fujitsu Semiconductor) is a 32-bit ARM Cortex-M3 microcontroller targeting high-performance motor control and industrial embedded applications. It operates at up to 40 MHz, integrates 256 KB on-chip Flash (0-wait), 32 KB SRAM (split into two 16 KB banks), and features dual USB 2.0 interfaces (Function + Host), 16-channel 12-bit ADC with scanning mode, and 8-channel base timers supporting PWM/PPG/reload modes.

For engineers reviewing the CY9AF314LAQN-G-AVE2 datasheet, CY9AF314LAQN-G-AVE2 pinout, CY9AF314LAQN-G-AVE2 application, or CY9AF314LAQN-G-AVE2 equivalent, key selection criteria include USB host capability, QPRC encoder interface support, dual watchdog (HW/SW), CRC accelerator for data integrity, and 100-pin LQFP package with 83 GPIOs including port relocation.

Technical Context

The CY9AF314LAQN-G-AVE2 implements the ARM Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels. Its memory subsystem includes separate I/D-bus-connected SRAM0 (16 KB) and system-bus-connected SRAM1 (16 KB), enabling concurrent CPU and DMA access without contention.

Peripheral integration centers on real-time control: dual USB 2.0 (Full-Speed Function + Full/Low-Speed Host), 2× Quadrature Position/Revolution Counters (QPRC) for encoder position tracking, and a multi-function timer unit with input capture, output compare, A/D activation, and waveform generation - all synchronized to motor control timing requirements.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MB9AF314LAPM-G-SNE2, CY9AF314LAQN-G-AVE2 trades extended temperature range for cost-sensitive commercial/industrial use; versus STM32F303VCT6, it prioritizes motor control peripherals (QPRC, USB host) over computational throughput and analog front-end integration.

Availability

CY9AF314LAQN-G-AVE2 is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and smart HVAC systems requiring stable component supply, long-term lifecycle support, and consistent electrical specifications across production batches.

Supply support for CY9AF314LAQN-G-AVE2 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 - specializes in high-reliability embedded controllers and non-volatile memory solutions for industrial and automotive markets.

The MB9A310A Series, including CY9AF314LAQN-G-AVE2, was designed specifically for cost-sensitive, high-performance motor control and real-time industrial automation applications requiring integrated USB, encoder interfaces, and robust low-power operation.

FAQ

Does CY9AF314LAQN-G-AVE2 support USB host mode with external device enumeration?

Yes. The part implements a full USB 2.0 host controller supporting Full-Speed and Low-Speed devices. It automatically detects device connect/disconnect events, handles IN/OUT token handshaking, and supports up to 256-byte packet lengths. External device enumeration is handled in firmware using the provided USB host stack APIs.

What is the maximum ADC sampling rate achievable with scanning mode enabled?

With 16 channels scanned sequentially and 1.0 μs conversion time per sample at 5 V supply, the theoretical maximum sustained sampling rate is 1 MSps per channel. However, actual throughput depends on FIFO depth (16 steps for SCAN mode), trigger source latency, and software overhead for data retrieval - typical real-world sustained rate is ~800 kSps across all channels.

Can the QPRC units operate independently while the CPU is in STOP mode?

Yes. Both QPRC units remain fully functional during STOP mode, powered by the sub-clock (32.768 kHz). Position and revolution counters continue incrementing/decrementing based on A/B/Z input edges, and can generate interrupts to wake the CPU - enabling ultra-low-power position monitoring in battery-powered equipment.

Is external bus interface supported on this part?

No. According to the official peripheral manual and datasheet DS706-00012-2v0-E, the MB9AF314LA variant (including CY9AF314LAQN-G-AVE2) explicitly excludes External Bus Interface functionality. This omission reduces pin count and simplifies PCB layout for applications not requiring external memory expansion.