Infineon Technologies CY9AF316NAPMC-G-MNE2

Overview

CY9AF316NAPMC-G-MNE2 from Cypress Semiconductor (acquired Spansion/Fujitsu) is a 32-bit ARM Cortex-M3 microcontroller with 512 KB on-chip Flash, 32 KB SRAM (split into two 16 KB banks), and integrated USB 2.0 Function/Host interface. It operates up to 40 MHz, supports 100-pin LQFP package, and targets motor control and industrial embedded systems requiring high-integration analog/mixed-signal peripherals.

For engineers reviewing the CY9AF316NAPMC-G-MNE2 datasheet, CY9AF316NAPMC-G-MNE2 pinout, CY9AF316NAPMC-G-MNE2 application, or CY9AF316NAPMC-G-MNE2 equivalent, key selection criteria include its dual A/D converter units (16-channel 12-bit SAR), QPRC for encoder position sensing, hardware watchdog with CR oscillator backup, external bus interface (25-bit address, 8/16-bit data, 8 chip selects), and 5V-tolerant I/O capability.

Technical Context

The device implements ARM Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels, plus SysTick timer for RTOS scheduling. Its memory subsystem includes zero-wait-state Flash and dual-bus-connected SRAM (SRAM0 on I/D-code bus, SRAM1 on system bus), enabling concurrent CPU and DMA access.

Peripherals are architected for deterministic real-time control: multi-function serial interfaces (8 channels, configurable as UART/CSIO/LIN/I²C), motor-focused timers (8-channel base timer with PWM/PPG/PWC modes), dual QPRC units for quadrature decoding, and CRC accelerator supporting CCITT CRC16 and IEEE-802.3 CRC32 for data integrity in communication and storage paths.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303VCT6 and RA6M3GFP, CY9AF316NAPMC-G-MNE2 uniquely balances motor-specific peripherals (dual QPRC, 16-channel ADC, PWC timers), external memory expansion, and 5V-tolerant I/O - making it optimal for cost-sensitive, high-reliability motor control and PLC modules where encoder integration and legacy interface compatibility are critical.

Availability

CY9AF316NAPMC-G-MNE2 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, programmable logic controller (PLC) I/O modules, and automotive body control modules requiring stable component supply and long-term lifecycle support.

Supply support for CY9AF316NAPMC-G-MNE2 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

Cypress Semiconductor (now part of Infineon Technologies) develops high-performance microcontrollers and analog solutions for industrial, automotive, and IoT applications, with heritage from Fujitsu and Spansion.

The MB9A310A series - including CY9AF316NAPMC-G-MNE2 - was designed specifically for cost-sensitive, high-integration embedded control applications demanding robust motor control, mixed-signal acquisition, and flexible communication interfaces.

FAQ

What is the maximum operating frequency and supported clock sources?

CY9AF316NAPMC-G-MNE2 operates up to 40 MHz using five selectable clock sources: two external oscillators (main clock 4–48 MHz, sub-clock 32.768 kHz), two built-in CR oscillators (4 MHz high-speed, 100 kHz low-speed), and a main PLL. The PLL derives from the main oscillator and enables precise frequency scaling while maintaining stability across temperature and voltage variations.

Does this MCU support hardware debugging and trace capabilities?

This device supports Serial Wire JTAG Debug Port (SWJ-DP) for full debug access, breakpoint setting, and memory inspection. However, it does not include Embedded Trace Macrocell (ETM); trace functionality is limited to SWD-based real-time variable monitoring and instruction stepping - sufficient for most industrial firmware development but not for deep pipeline-level instruction tracing.

How many A/D converter units are integrated, and what is their resolution and speed?

CY9AF316NAPMC-G-MNE2 integrates three 12-bit successive approximation register (SAR) A/D converters, totaling 16 input channels. Each converter achieves 1.0 µs conversion time at 5 V supply, supports priority-based and scanning modes, and includes dedicated FIFO buffers (16-step for scan, 4-step for priority) to reduce CPU polling overhead during high-frequency sampling.

Is external memory expansion supported, and what interface options are available?

Yes, the device includes a full External Bus Interface supporting SRAM and NOR Flash devices. It provides up to 8 chip selects, 25-bit address bus (33 MB address space), 8/16-bit data bus, address/data multiplexing, and external RDY handshake - enabling direct connection to parallel memory devices without glue logic, ideal for firmware overlays or large data logging buffers.